論文 - 會澤　純雄

Nanoscale chirality generated in zinc(II) orthophosphate clusters: evidence by vibrational circular dichroism

Sumio Aisawa, Nami Horiguchi, Chika Chida, Jing Sang, Hidetoshi Hirahara, Akihiko Yamagishi and Hisako Sato

Nanoscale ( The Royal Society of Chemistry )  16   20589 - 20595   2024年10月  [査読有り]

国際的学術誌  共著・分担

Layered zinc(II) hydroxides (LZH) intercalating the deprotonated forms of R-(−) or S-(+)-1,1’-binaphthyl-2,2’-diyl hydrogenphosphate (denoted as R- or S-BNDHPH, respectively) were prepared from Zn(NO3)2 atpH 5 and 60 °C by the mixing method. The obtained hybrid compounds (denoted as R- or S-BNDHP−/LZH, respectively) were heated from room temperature up to 800 °C under nitrogen atmosphere. According to the thermal gravimetric/differential thermal analysis measurements, hydroxyl groups were dehydrated at 270–400 °C, followed by the decomposition of organic components at 420–600 °C. X-ray diffraction patterns and scanning electron microscopy images indicated that the final products were a mixture of α-Zn3(PO4)2, ZnO crystals and non-crystalline zinc(II) orthophosphates. Vibrational circular dichroism (VCD) spectra were recorded before and after calcination. Before calcination, R- or S-BNDHP−/LZH exhibited VCD peaks assigned to intercalated R- or S-BNDHP−. The calcined products exhibited several VCD peaks in the range of 900–1200 cm−1, maintaining the mirror-image relationship between R-BNDHP−/LZH and S-BNDHP−/LZH used as starting materials. The observed peaks were assigned to the PvO (symmetric), –POO−, and PvO (asymmetric) stretching vibrations of the PO43− groups. According to theoretical simulations, the observed VCD activity can be rationalised in terms of vibrational coupling between two PO43− groups in a generated chiral zinc(II) orthophosphate cluster.

DOI

Enhancing mechanism of nanodiamonds on tribological behavior and antiwear properties in Ag composite coatings during current-carrying friction

Jiamin Fang, Dexin Chen, Yuting Liu, Peng Zhang, Jing Sang, Hidetoshi Hirahara, Sumio Aisawa, Wei Li

Materials Chemistry and Physics ( Elsevier B.V. )    2025年05月  [査読有り]

国際的学術誌  共著・分担

DOI

Electrical corrosion behavior and erosion mechanism of conductive hard films during current-carrying friction

Mingchong Lu, Jiahua Zhang, Peng Zhang, Qiwei Wang, Jing Sang, Hidetoshi Hirahara, Sumio Aisawa, Dexin Chen

Diamond and Related Materials   153   2025年01月  [査読有り]

学術誌  共著・分担

DOI

Electrical corrosion behavior and erosion mechanism of conductive hard films during current-carrying friction

Mingchong Lu, Jiahua Zhang, Peng Zhang, Qiwei Wang, Jing Sang, Hidetoshi Hirahara, Sumio Aisawa , Dexin Chen

Diamond and Related Materials   153   112018   2025年01月  [査読有り]

学術誌  共著・分担

SOLID-STATE VIBRATIONAL CIRCULAR DICHROISM FOR INTERCALATION COMPOUNDS OF LAYERED DOUBLE HYDROXIDES: TOWARDS DRUG DELIVERY SYSTEMS

Hisako Sato, Sumio Aisawa, Akihiko Yamagishi

Clay Science ( The Clay Science Society of Japan )  28 ( 1-2 ) 1 - 9   2024年07月  [査読有り]

学会誌  共著・分担

This review describes the application of solid-state vibrational circular dichroism spectroscopy (denoted as SD-VCD) to the intercalation compounds of layered double hydroxides (LDH’s). The hybrid compounds of chiral molecules and LDH are chosen as a main target. SD-VCD is employed to probe the conformation of an intercalated amino acid. Intermolecular interactions are studied from the VCD spectra on LDH samples co-adsorbing an amino acid and tartaric acid. Notably the enhancement of VCD signals occurs to provide evidence for the stereoselective interactions between the intercalated species. As a final goal, the analysis of a model drug tablet containing LDH is described by means of the microscopic scanning VCD method.

DOI

Catalytic mechanism of Co-containing layered double hydroxide (Co-LDH) as a precursor in carbon nanotube (CNT) synthesis

Chika Chida, Sumio Aisawa, Kei Yokoyama, Riku Kumagai, Jing Sang, Hidetoshi Hirahara, Hiroe Kimura, Don N Futaba

Chemistry Letters ( Oxford University Press )  53   2024年03月  [査読有り]

学会誌  共著・分担

DOI

COPRECIPITATION OF BORON WITH NICKEL(II) HYDROXIDES IN WASTEWATER

Sumio Aisawa, Masatoshi Takahashi, Tooru Abe, Chika Chida, Hidetoshi Hirahara, Eiichi Narita

Clay Science ( 日本粘土学会 )  27 ( 3-4 ) 33 - 39   2023年12月  [査読有り]

学会誌  共著・分担

In this work, the removal of boron (B) in wastewater was investigated by the coprecipitation method using bivalent metal ion as a precipitant. From the preliminary experiments conducted under the fundamental conditions, the removal percentage (coprecipitation degree) of B was found to be quite different depend on the kind of metal ions used, and it became the highest as 95.9% when Ni2+ ion was adopted. Also, the residual B concentration was under the limited value (10 mg/L) of the regulation for wastewater. Then, the optimum conditions in this case were studied in detail and the result was as follows; Initial B concentration=300 mg/L, Ni2+/B molar ratio=12/1, temperature 25°C and pH 9–10. Comparing with the Ni–Al layered double hydroxide prepared under the same condition, this nickel hydroxide precipitate indicated much higher removal ability for B. The precipitate obtained at the optimum condition was mainly the layered nickel hydroxide coordinating borate ion in the interlayer space, which basal spacing being 0.80 nm. Depending on the conditions, several other precipitates such as nickel hydroxide hydrate (3Ni(OH)2·2H2O) and theophrastite (Ni(OH)2) formed highly accompanying borate ion on their surface or inside. In conclusion, new simple method for the B removal by the coprecipitation using Ni2+ ion at higher pH was proposed in this study.

DOI

Synthesis of phenylalanine and tartaric acid intercalated layered double hydroxide (LDH): Investigation of two kinds of chiral molecules interaction in interlayer space of LDH using solid-state vibrational circular dichroism

Sumio Aisawa, Chika Chida, Honoka Ida, Jing Sang, Hidetoshi Hirahara, Hisako Sato

Applied Clay Science ( Elsevier B.V. )  ( 244 )   2023年11月  [査読有り]

国際的学術誌  共著・分担

Recently, the applicability of solid-state vibrational circular dichroism (SD-VCD) for the evaluation of organoclay nanohybrids has attracted much attention. Herein, the intercalation of two kinds of chiral molecules, phenylalanine (Phe) and tartaric acid (Tart), into Zn-Al layered double hydroxide (LDH) was carried out by a standard coprecipitation method. The Phe/Tart/LDH was characterized by XRD, FT-IR, TG-DTA, and SD-VCD. The chemical composition and interlayer distance expansion of Phe/Tart/LDH indicated that Phe and Tart were intercalated into the LDH. The VCD and theoretical calculation results showed that Phe and Tart coexisted in the same interlayer space of LDH with the formation of electrostatic interaction and hydrogen bonding between Phe-Tart, LDH-Phe, and LDH-Tart. The results demonstrated the utility of the SD-VCD method for determining the detailed conformation of chiral molecules in the LDH interlayer space.

DOI

Structural, optical, and photocatalytic properties of rare-earth free double-perovskite oxides Ba₂Bi³⁺(Bi⁵⁺_1-2xSb⁵⁺_2x)O₆

Dayal Chandra Ro, Michiaki Matsukawa, Minami Arakida, Hanako Sakou, Kazuto Hata, Kazume Nishidate, Sumio Aisawa, Hajime Yamamoto, Akiyuki Matsushita

Solid State Communications ( Elsevier Ltd. )  373–374   2023年09月  [査読有り]

学術誌  共著・分担

DOI

Superhydrophobic coatings by electrodeposition on Mg–Li alloys: Attempt of armor-like Ni patterns to improve the robustness

Hongyuan He, Jiebin Du, Jing Sang, Hidetoshi Hirahara, Sumio Aisawa, Dexin Chen

Materials Chemistry and Physics   304 ( 127902 )   2023年05月  [査読有り]

国際的学術誌  共著・分担

Due to the fragility of the layered structure, the mechanical properties of superhydrophobic surfaces, particularly wear resistance, are still too poor, limiting the industrial application of protecting magnesium-lithium (LZ91) alloys from corrosion. As a result, we’re testing screen-printed masks to electroplate armor-like Ni columns. Then, using electrodeposition, compact micro/nanometer-sized papillary structured superhydrophobic surfaces are created on Mg–Li alloys, which exhibit good low viscosity, self-cleaning, chemical stability, and excellent corrosion resistance with a 2 order of magnitude decrease in corrosion current density in both corrosive media. Surprisingly, increasing the deposition time causes the dissolution of Cu anode electrodes and the subsequent formation of Cu compounds on the superhydrophobic coating, resulting in the formation of dense needle-like structures on these papillae. Even after the superhydrophobic structures are worn away, the armor-like Ni col- umns reduce the contact angle’s tendency to decrease. This proposed deposition method provides a simple and fast process for protecting the surface of Mg–Li alloys, and the concept of armored Ni patterns may pave the way for future advances in the robustness and application of superhydrophobic coatings.

Synthesis of Carbon Nanotube using Layered Double Hydroxide with Various Metal Compositions as Catalyst Precursors

Chika Chida, Sumio Aisawa, Riku Kumagai, Jing Sang, Hidetoshi Hirahara, Hiroe Kimura, Don N. Futaba

Chemistry Letters ( The Chemical Society of Japan )  52   412 - 415   2023年04月  [査読有り]

学会誌  共著・分担

DOI

Enhanced photocatalytic activities under visible light of double-perovskite oxide semiconductor Ba₂Tb(Bi, Sb)O₆ with mixed-valence

Dayal Chandra Roy, Michiaki Matsukawa, Takanori Yonai, Minami Arakida, Haruka Taniguchi, Kazume Nishidate, Sumio Aisawa, Akiyuki Matsushita, Lin Shiqi

Journal of Materials Science: Materials in Electronics   34 ( 281 )   2023年01月  [査読有り]

学術誌  共著・分担

In this study, we showed the effect of Sb substitution on lattice structures, physical properties and photocatalytic activities for the double-perovskite oxides with mixed valence. High quality powders of Ba2Tb(Bi1−xSbx)O6 (0.1≤x≤1.0) were successfully synthesized using a citrate pyrolysis approach. Through partial substitution of Sb at Bi site of this compound, it was possible to design oxidative photocatalysts at lower x, and reduction-type ones at higher x. These findings are discussed on the basis of the conduction and valence band edge potentials of a series of Ba2(Tb, Pr)(Bi, Sb)O6 photocatalysts. The Sb substituted sample with the x = 0.6 composition predicted from the machine learning procedure exhibited the highest performance of methylene blue degradation, which is comparable to typical degradation rates for good perovskite catalysts.

DOI

Preparation of hollow nanosphere of 5-fluorouracil/layered double hydroxide and its cellular cytotoxicity

Sumio Aisawa, Jing Sang , Daisuke Suga , Hidetoshi Hirahara , Eiichi Narita

Applied Clay Science ( Elsevier B.V. )  ( 226 )   2022年09月  [査読有り]

国際的学術誌  共著・分担

We have first prepared the layered double hydroxide (LDH)/carbon nanosphere (CNS) composite by mixing the LDH gel containing methoxide interlayer anion with the CNS template (particle size of 300–700 nm) suspension in methanol at room temperature under ultrasonication. The SEM observation indicates that the CNS core was uniformly covered with the LDH thin film made up by fine plate-like particles to form the composite. Then, the intercalation of anticancer drug, 5-fluorouracil (5-FU), into the LDH interlayer was carried out by the calcinationrehydration reaction and the solid products were analyzed using XRD, FT-IR, SEM, TEM etc. During the calcination process at 500 ◦C for 3 h, the CNS core was removed by combustion and the LDH shell became the hollow LDH oxide nanosphere. In the following rehydration process at 60 ◦C for 24 h, this oxide precursor was reconstructed the hollow LDH nanosphere having the surface of coral-like structure (spontaneously formed LDH particles) incorporating 5-FU anion in the interlayer. Finally, the anticancer drug efficacy in vitro of the products was estimated by using the WST-8 assays in HeLa cell lines. As the result, the hollow nanosphere of the 5-FU/ LDH performed an improvement of drug efficacy compared to the conventional plate-like particle of the 5-FU/LDH as the reference and the naked 5-FU itself at the same 5-FU concentration.

DOI

トリアジンチオール末端オリゴ（2-メチル-2-オキサゾリン）による銅表面の親水化

佐藤久美子,會澤純雄,平原英俊,菊地康昭,成田 榮一

色材協会誌   95 ( 8 ) 229 - 234   2022年08月  [査読有り]

学術誌  共著・分担

DOI

Two-dimensional Imaging of a Model Pharmaceutical Dosage Tablet Using a Scanning Vibrational Circular Dichroism System

Hisako Sato, Sumio Aisawa, Honoka Ida, Masaru Shimizu, Keisuke Watanabe, Jun Koshoubu, Jun Yoshida, and Izuru Kawamura

Chemistry Letters ( The Chemical Society of Japan )  51 ( 2 ) 205 - 207   2021年12月  [査読有り]

学会誌  共著・分担

A vibrational circular dichroism (VCD) system with a quantum-cascade laser was used to obtain a two-dimensional image of VCD signals on a pharmaceutical tablet. A KBr disc of a model dosage form was prepared using tartaric acid and phenylalanine as chiral multi-reagents and layered double hydroxides as excipients. VCD spectra were obtained in the range 1500-1700 cm^-1 at a 1 mm i.d. spatial resolution. The results demonstrated the utility of the proposed system in quality control during drug manufacturing.

DOI

A kinetic analysis of intercalation of organic sulfate anions into layered double hydroxide using quartz crystal microbalance with layered double hydroxide-immobilized electrode

Sumio AISAWA, Jing SANG, Yuya NITANAI, Hidetoshi HIRAHARA, Eiichi NARITA

Journal of the Ceramic Society of Japan ( 公益社団法人日本セラミックス協会 )  129 ( 7 ) 470 - 477   2021年07月  [査読有り]

学術誌  共著・分担

To investigate a dynamic intercalation behavior of organic anions into layered double hydroxide (LDH) interlayer by ion-exchange, a quartz crystal microbalance (QCM) with the Mg–Al LDH thin film immobilized gold disc (LDH/QC) electrode has been used. A stable minute LDH film was prepared by using translucent aqueous sol of LDH containing OH− ions and magnesium acetate molecule in the interlayer and immobilized on the gold disc after pretreatment of the surface of the supporting silica electrode with hydrophobic agent. In the kinetic analysis, alkyl sulfates having n-alkyl chain (CnH2n+1, n = 5–12; abbreviated as CnS) were used as guest anions. As the results, the time-dependence on CnS intercalation by ion-exchange with guest OH− ions and magnesium acetate molecules was measured in the cases of CnS (n ≥ 7), and the data of C11S and C12S intercalation were successively analyzed using the rate equation based on the reversible pseud first-order reaction. Finally, the instrumental analyses of the LDH films before and after the intercalation of C12S revealed that the organic anions could be intercalated into the LDH interlayer of the LDH/QC electrode in each aqueous solutions.

DOI

Interfacial Molecular Motion and Chemical Characteristics of Polymer Jointed to Metal by Chemical Bonding

Xueliang Deng, Jing Sang, Sumio Aisawa, Katsuhito Mori , Hidetoshi Hirahara

Journal of the Japan Society of Colour Material   94 ( 6 ) 149 - 157   2021年06月  [査読有り]

学術誌  単著

シリコンゴムとAlが接触方式による放熱材料の熱伝導性，接着剤による接合での熱伝導性，そして界面化学結合により創成したシリコンゴムとAl複合体の化学接合方式による熱伝導特性への影響を評価することによって，ヒートシンクと放熱材料，および放熱材料と熱源の界面の接触熱抵抗の影響を解明している。シリコンゴムとAl複合体の熱伝導特性におよぼすシリコンゴム架橋剤添加量とシリコンゴム厚さの影響について検討した。シリコンゴムとAlの接触方式による熱伝導性と接着剤による接合での熱伝導性，そして分子接合剤により界面化学結合させたシリコンゴムとAl複合体の化学接合方式によって熱伝導特性が異なることを解明し，化学結合を用いて接合したシリコンゴムとAl複合体放熱材料はシリコンゴムとヒートシンク(Al)材料の接触熱抵抗の減少に有効であることを明らかにした。

INTERCALATION BEHAVIOR OF VANILLIN AND RELATED COMPOUNDS INTO Mg–Al LAYERED DOUBLE HYDROXIDE BY CALCINATION–REHYDRATION REACTION IN AQUEOUS SOLUTIONS

Sumio Aisawa, Jing Sang, Ayaka Masubuchi, Hidetoshi Hirahara, Eiichi Narita

Clay Science ( The Clay Science Society of Japan )  24 ( 2-4 ) 47 - 54   2021年02月  [査読有り]

学術誌  共著・分担

The intercalation behavior of vanillin (VL), one of the most famous flavoring components having aldehyde structure, and its related compounds, m-anise aldehyde (MA) and 2-methoxyphenol (MP), into Mg–Al layered double hydroxide (LDH) has been examined by the calcination-rehydration (reconstruction) method using LDH oxide precursor at 25°C for 24 h. The molar ratio of the organic guest in aqueous solution to Al3+ ion in LDH oxide was set at 1.00 in all the experiments. The solid product was found to incorporate the guest depend on its structure together with hydroxide ion and to show the restorable LDH structure. The amounts of the organic guest intercalated (the guest/Al molar ratio of the solid product) were as follows: VL (0.81)>MP (0.41)>MA (0.18), and the effect of each substituent group of the guests was also discussed. In the case of vanillin isomers, the intercalated amounts were differently in the order; VL (0.81)>ortho-vanillin (0.58)>iso-vanillin (0.35), whereas the intercalated amounts of anise isomers were, on the whole, lower than VL isomers as MA (0.18)>ortho-anise (0.034)>para-anise (0.012). The XRD patterns of the solid products showed that VL was intercalated as a monovalent anion to make bilayer and to keep horizontal orientation for the LDH basal layer, and the others were intercalated to keep parallel orientation in the interlayer. Moreover, the results of the guest deintercalation (release) experiments from the solid products by ion exchange with chloride or carbonate ion revealed that the easier intercalated guest, the more difficult released one from the solid products.

DOI

Structural, physical and photocatalytic properties of mixed-valence double-perovskite Ba₂Pr(Bi,Sb)O₆ semiconductor synthesized by citrate pyrolysis technique

Arisa Sato, Michiaki Matsukawa, Haruka Taniguchi, Shunsuke Tsuji, Kazume Nishidate, Sumio Aisawa, Akiyuki Matsushita, Kun Zhang

Solid State Sciences ( Elsevier )  107   106352   2020年07月  [査読有り]

学術誌  共著・分担

DOI

ADSORPTION OF ZEARALENONE ON CLAY AND TREATED CLAY MATERIALS IN AQUEOUS SOLUTIONS

Noriyuki Takahashi, Sumio Aisawa, Hidetoshi Hirahara, Eiichi Narita

Clay Science ( The Clay Science Society of Japan )  24   23 - 30   2020年06月  [査読有り]

学会誌  共著・分担

First, in order to find suitable evaluation factors of zearalenone (ZEA) adsorption ability of clay and treated clay materials, their specific surface area values obtained from nitrogen and water adsorption isotherms, SA(N2) and SA(H2O), and monolayer adsorption capacities of water and toluene obtained from each adsorption isotherms, Vm(H2O) and Vm(toluene), were measured together with their ZEA adsorption ability. However, any good relationships between the measured values and the ZEA adsorption ability were not recognized here. This result means that the mechanism of ZEA adsorption is complicated depend on the kind of clay. From the water and toluene adsorption isotherms of these adsorbents, the reason of the higher adsorption ability of clays such as magnesium silicate and talc adsorbents was clarified and a certain good relationship between the SA(H2O)/SA(N2) ratio and the ZEA adsorption ability was found for these adsorbents. Next, the acid treatment and heat treatment of the Japanese acid earth, JAE sample, were carried out to develop economically the effective adsorbent for ZEA in aqueous solutions. Consequently, the heat treatment of the JAE sample resulted a dramatic decrease in the values of Vm(H2O) and SA(H2O)/SA(N2) ratio, meaning the higher adsorption ability for ZEA. The ZEA adsorption ability of the HE-K sample heated at 773 K was the largest in all the clay adsorbents except the reference samples.

DOI

Preparation of dipentaerythritol-combined layered double hydroxide particle and its thermostabilizing effect for polyvinyl chloride

Sumio Aisawa, Chie Nakada, Hidetoshi Hirahara, Noriyuki Takahashi, Eiichi Narita

Applied Clay Science   180   2019年11月  [査読有り]

学術誌  共著・分担

In recent years, layered double hydroxide (LDH) well-known as hydrotalcite-like compound has received considerable attention due to its potential technological applications such as antacid, anion-exchangers, stabilizers and reinforcing fillers for synthetic or natural organic polymers. On the other hand, one of polyhydric alcohols, dipentaerythritol (Dpe), is known as a typical component of polyvinyl chloride (PVC) stabilizer. In this study, we attempted the intercalation of Dpe into a carbonated Mg–Al LDH (the Mg–Al/CO3/LDH) interlayer by the thermal reaction using molten guest substance to develop a new effective thermostabilizer for PVC resin. During the thermal reaction at 200–235 °C, the decarboxylation and dehydration of the Mg–Al LDH proceeded and the solid product at 235 °C after 3 h was found to be the most disordered structure, not the Dpe-intercalated LDH. The results of FT-IR, TG-DTA, and chemical analysis exhibited that the solid product was the aggregate of the disordered LDH particles covering with Dpe molecule (Mg–Al LDH-Dpe composite) and a small amount of the Mg–Al/OH/LDH. Next, we prepared the PVC sheet by loading the solid product or various kinds of additives into PVC paste resin with dioctyl phthalate and etc. by molding and subsequently by heating. In the heat-resistance test of the resulted PVC sheets at 180 °C for 2 h, the PVC sheet loaded with the solid product showed the longest heat-resistance in all the cases. It also exhibited the best results in each the hardness and elongation tests of the PVC sheet recovered after the heat-resistance test. Although we could not prepare the Dpe-intercalated LDH, the Mg–Al LDH-Dpe composite exhibiting the expectable ability as thermostabilizer for PVC resin was obtained in this study.

DOI

Direct Bonding of Polypropylene to Aluminum Using Molecular Connection and the Interface Nanoscale Properties

Jing Sang, Hidetoshi Hirahara, Sumio Aisawa, Zhixin Kang, Kunio Mori

ACS Appl. Polym. Mater.   1   2450 - 2459   2019年08月  [査読有り]

国際的学術誌  共著・分担

Because of the ever increasing demand for high precision and high reliability adhesions, interest in the investigation and development of direct adhesion and interface bonding between different materials is growing rapidly. We report here a direct adhesion method for polymer/metal bonding via grafting of a triazine molecular layer. Polypropylene (PP) and aluminum (Al) are the bonding polymer and metal, respectively, in our study. The surface and interface characteristics at the nanoscale were studied through nanoscale thermal analysis (nano-TA) and atomic force microscopy + nanoscale infrared spectroscopy (AFM nano-IR) to evaluate the thermal properties and chemical structure of the bonding substances. It was found that the triazine molecular agent reacted with the plasma-treated PP and Al surfaces, leading to a covalent bond on the surfaces. The adhesion interface of PP and Al has revealed that the adhesion strength approached the cohesive failure stress of PP when the adhesion temperature exceeded the surface transition temperature (Tt) of PP (i.e., 127 °C ± 3 °C). The AFM-nanoIR spectra displayed crystal peaks of PP at 1164 cm–1 along the interface. The results revealed the effect of surface nanoscale thermal properties and covalent bonding on the resin adhesion bonding. The findings from this study should be particularly valuable in the precision adhesion applications of industrial resins.

DOI

Application of Solid-State Vibrational Circular Dichroism for Intercalation Compounds of Layered Double Hydroxide and Amino Acids: Conformation of an Intercalated Phenylalanine

Hisako Sato, Kazuyoshi Takimoto, Izuru Kawamura, and Sumio Aisawa

Bulletin of the Chemical Society of Japan   92 ( 10 ) 1779 - 1784   2019年06月  [査読有り]

学術誌  共著・分担

Solid-state vibrational circular dichroism (SD-VCD) spectra were measured on the intercalation compounds of layered double hydroxide (LDH) and d- or l-phenylalanine (d- or l-Phe). A used LDH was composed of Zn(II) and Al(III) at 2:1 molar ratio. For comparison, the SD-VCD spectra were recorded on the enantiopure crystalline samples of Phe. The measured spectra were analyzed with a help of the theoretical simulation calculated by the Gaussian16 program. It was concluded that Phe formed a tetramer in the crystalline state, forming the intermolecular hydrogen bonds between –COO- and –NH3+ groups. In the intercalated states, the neighboring Phe molecules oriented vertically to the layer surface in an anti-parallel fashion, forming their –COO- groups hydrogen bonded individually with the OH groups on the surface of LDH. The results demonstrated the utility of the SD-VCD method for obtaining the detailed conformation of a molecule within an inorganic host.

DOI

Adsorption behaviors of deposition-targeted metallic ions onto thiol-containing silane modified liquid crystal polymer surfaces

Dexin Chen, Zhixin Kang, Hidetoshi Hirahara, Sumio Aisawa, Wei Li

Applied Surface Science   479 ( 15 ) 368 - 374   2019年06月  [査読有り]

国際的学術誌  共著・分担

DOI

ポータブル複合Ｘ線分析による中世前半期の中国産陶磁器の産地推定に関する研究 ―福建・浙江産陶磁器の研究を事例に―

徳留大輔，平原英俊，桑静，田上勇一郎，栗建安，羊澤林，沈岳明，會澤純雄

東洋陶磁   ( 48 ) 75 - 92   2019年03月  [査読有り]

学会誌  共著・分担

REMOVAL OF PERFLUOROSURFACTANTS FROM AQUEOUS SOLUTIONS BY COPRECIPITATION WITH Mg–Al LAYERED DOUBLE HYDROXIDES AND THERMAL DECOMPOSITION OF RESULTING PRECIPITATES

Sumio Aisawa, Takeshi Tokuta, Hidetoshi Hirahara, Eiichi Narita

Clay Science   22 ( 3 ) 61 - 69   2018年11月  [査読有り]

学会誌  共著・分担

DOI

ADSORPTION OF AFLATOXIN B1 ON NATURAL CLAYS IN AQUEOUS SOLUTIONS

Sumio Aisawa, Noriyuki Takahashi, Saki Kikuchi, Hidetoshi Hirahara, Eiichi Narita

Clay Science   22 ( 2 ) 53 - 59   2018年06月  [査読有り]

学会誌  共著・分担

DOI

IMPROVEMENT FOR TRIBOLOGICAL AND HYDROGEN BARRIER PROPERTIES OF POLY OLEFINE BY THE ADDITION OF LECITHIN-MODIFIED CLAY

Hidetaka Nanao, Sumio Aisawa, Hidetoshi Hirahara, Noriyuki Takahashi, Masayuki Shirai

Clay Science   21   55 - 58   2017年10月  [査読有り]

国際的学術誌  共著・分担

溶液浸せき法によるスズ系金属表面への トリアジントリチオールの吸着

平井彰, 桑静, 會澤純雄, 平原英俊

色材協会誌   90 ( 5 ) 161 - 167   2017年08月  [査読有り]

学会誌  共著・分担

スズ（Sn）系金属表面にトリアジントリチオール（1,3,5-Triazine-2,4,6-trithiol：TTCA）を，溶液浸せき法により吸着させる条件について研究した。TTCAが互変異性構造をもつことから溶媒のプロトン供与性に着目した。非プロトン性溶媒であるジメチルフォルムアミド（DMF）やN-メチルピロリドン（NMP）溶液中では吸着されにくいが，プロトン供与性溶媒であるメチルアルコール（MeA）やエチレングリコールモノブチルエーテル（EGMBE）溶液中では容易に表面吸着することを新たに見いだした。Sn表面は還元性プラズマ処理をしても空気中で容易に酸化膜を形成するが，プロトン供与性溶媒中では酸化物の酸素が脱離して金属とチオールとの結合によって表面に吸着し，さらにTTCAがジスルフィド結合によって表面に積層されていくことをXPS分析により明らかにした。塗料用溶剤などで使用されているMeAやEGMBEを使用して，浸せき法により金属表面をTTCAで簡便に機能化することが可能となった。

Hybrid joining of polyamide and hydrogenated acrylonitrile butadiene rubber through heat-resistant functional layer of silane coupling agent

Jing Sang, Riku Sato, Sumio Aisawa, Hidetoshi Hirahara, Kunio Mori

Applied Surface Science   412   121 - 130   2017年03月  [査読有り]

国際的学術誌  共著・分担

Volume 412, 1 August 2017, Pages 121-130

Adhesion of carbon steel and natural rubber by functionalized silane coupling agents

Jing Sang, Sumio Aisawa, Katsuya Miura, Hidetoshi Hirahara, Oravec Jan, Preto Jozef, Melus Pavol

International Journal of Adhesion and Adhesives   72   70 - 74   2016年10月  [査読有り]

国際的学術誌  共著・分担

Long period preservation of marine products using electrostatic field

Takamasa Okumura, Taro Yaegashi, Kazuki Yamada, Takanori Ito, Katsuyuki Takahashi, Sumio Aisawa, Koichi Takaki, Shigeyoshi Yamazaki, and Bunei Syuto

Japanese Journal of Applied Physics   55   2016年06月

国際的学術誌  共著・分担

Japanese Journal of Applied Physics 55, 07LG07 (2016)

Integration of Peroxide-Cured Rubber/Rubber Through Covalent Grafting of a Thiol-Linked Molecular Layer

Jing Sang, Sumio Aisawa, Takahiro Kudo, Hidetoshi Hirahara, and Kunio Mori

Ind. Eng. Chem. Res.   55 ( 24 ) 6792 - 6800   2016年05月  [査読有り]

国際的学術誌  共著・分担

A simple, nonfluid, and direct adhesion method was developed to adhere cured rubber/rubber via grafting of a molecular layer of a triazine-based silane coupling agent without any pretreatment. During peroxide curing, oxide functional groups that can react with silanol groups were automatically fabricated on the surface of acrylonitrile–butadiene rubber (NBR) during primary processing at different curing temperatures. After the molecular layer was grafted onto the cured rubber surface, nonfluid adhesion between the cured NBR surfaces was induced. An NBR/NBR joined body was obtained and exhibited high adhesion strength with cohesive failure. The presented method is rapid, inexpensive, and environmentally friendly and can resolve the persistent problems of spew, extra adhesive, and rugose interface in the "fluid adhesion" of adhesive adhesion and vulcanization bonding processes. In addition, this method does not require secondary processing for inducing the formation of functional groups.

Heat-resistant organic molecular layer as a joint interface for metal reduction on plastics surfaces

Jing Sang, Sumio Aisawa, Hidetoshi Hirahara, Takahiro Kudo, Kunio Mori

Applied Surface Science   368   49 - 55   2016年04月  [査読有り]

国際的学術誌  共著・分担

Self-reduction and size controlled synthesis of silver nanoparticles on carbon nanospheres by grafting triazine-based molecular layer for conductivity improvement

Jing Sang, Sumio Aisawa, Hidetoshi Hirahara, Takahiro Kudo, Kunio Mori

Applied Surface Science   364   110 - 116   2015年12月  [査読有り]

国際的学術誌  共著・分担

Primary process to fabricate functional groups on acrylonitrile-butadiene rubber surface during peroxide curing

Jing Sang, Sumio Aisawa, Hidetoshi Hirahara, Kunio Mori

Chemical Engineering Journal   287   657 - 664   2015年11月  [査読有り]

国際的学術誌  共著・分担

多官能性トリアジン化合物による樹脂上への無電解スプレー銀めっきに関する研究

Yanni LI, Sumio AISAWA, Jing SANG, Kunio MORI, Takahiro KUDO, and Hidetoshi HIRAHARA

Journal of The Japan Society of Colour Material   88 ( 8 ) 257 - 264   2015年09月  [査読有り]

学術誌  共著・分担

メカノケミカル-水熱法によるイットリウムまたはテルビウム含有層状複水酸化物の合成

篠原五月，會澤純雄，平原英俊，成田榮一，佐藤次雄

Journal of the Society of Inorganic Materials，Japan   22   129 - 136   2015年06月  [査読有り]

学術誌  共著・分担

コーンコブ炭化物土壌改良材による農作物へのカドミウムイオンの吸収低減効果

佐々木陽，佐藤光沙子，大井崇人，會澤純雄，平原英俊，成田榮一

木質炭化学会誌   11   23 - 30   2014年10月  [査読有り]

学会誌  共著・分担

Mg-Al系層状複水酸化物へのフルオレセインのインターカレーション挙動に及ぼす合成条件の影響

田中みゆき，會澤純雄，平原英俊，成田榮一，董 強，殷 シュウ，佐藤次雄

J. Soc. Inorg. Mater.   20   359 - 367   2013年11月  [査読有り]

学会誌  共著・分担

塩基性染料と酸性染料による毛髪の染色性比較

高橋政信，尾山達人，小野寺哲也，會澤純雄，平原英俊，成田榮一

色材協会誌   86   155 - 162   2013年06月  [査読有り]

学会誌  共著・分担

Intracellular Release of Fluorescein Anion from Layered Double Hydroxide Nanoparticles indicating Endosomal Escape

Miyuki Tanaka, Sumio Aisawa, Hidetoshi Hirahara, Eiichi Narita, Qiang Dong,Shu Yin, Tsugio Sato

Mater. Sci. Eng.   47   2013年06月  [査読有り]

学術誌  共著・分担

過酸化物架橋されたＮＢＲの表面および切断面の官能基分析

桑 静，平原英俊，森 克仁，松野祐亮，工藤孝廣，會澤純雄，成田榮一，大石好行，森 邦夫

日本ゴム協会誌   85 ( 3 ) 75 - 80   2012年08月  [査読有り]

学会誌  共著・分担

ペプチド／抗がん剤／層状複水酸化物ナノ複合体の合成とその細胞毒性

會澤純雄，安武愛子，高橋　諭，平原英俊，成田榮一

J. Soc. Inorg. Mater., Japan   19   230 - 236   2012年07月  [査読有り]

学会誌  共著・分担

加熱処理毛髪における機械的特性変化を伴う化学変化

高橋政信，小野寺哲也，會澤純雄，平原英俊，成田榮一

皮膚と美容   44   23 - 31   2012年06月  [査読有り]

学会誌  共著・分担

Cellular Uptake Behavior of Fluorescein-intercalated Layered Double Hydroxide

Miyuki Tanaka, Sumio Aisawa, Hidetoshi Hirahara, Eiichi Narita, Shu Yin, Tsugio Sato

Functional Mater. Lett.     2012年05月  [査読有り]

学術誌  共著・分担

Production and Dye Adsorbability of Charcoal from Waste Corncob

Mohd Hasnul bin Abdul Rahman, Akira Sasaki, Sumio Aisawa, Hidetoshi Hirahara, Eiichi Narita

Journal of the Society Inorganic Materials, Japan   19   9 - 14   2012年03月  [査読有り]

学会誌  共著・分担

Characteristics of Tantalum Surface Treated by 6-Trienthoxysilypropylamino-1,3,5-Triazine-2,4-Dithiol Using XPS

Sang Jing, Hidetoshi Hirahara, Sumio Aisawa, Eiichi Narita, Kunio Mori, Zhixin Kang

Rare Metal Mater. Eng.   41   28 - 32   2012年02月  [査読有り]

学術誌  共著・分担

Direct Adhesion of Rubbers to Various Resins During Curing Using Molecular Adhesives

Hidetoshi Hirahara, Katsuhiko Mori, Eiichi Narita, Yoshiyuki Oishi, Sumio Aisawa and Kunio Mori

Chem. Listy.   105   336 - 337   2011年05月  [査読有り]

学術誌  共著・分担

Synthesis and Cellular Uptake of Fluorescein Intercalated Layered Double Hydroxide

Miyuki Tanaka, Sumio Aisawa, Satohi Takahashi, Hidetoshi Hirahara, Eiichi Narita

Clay Science   14   197 - 202   2010年12月  [査読有り]

学会誌  共著・分担

コーンストークの炭化と生成炭化物の吸着特性

佐々木陽，森秀一，目時槙子，Mohd Hasnul bin Abdul Rahman，平原英俊，會澤純雄，成田榮一

木質炭化学会誌   7   12 - 18   2010年04月  [査読有り]

学会誌  共著・分担

トリアジンチオール末端オリゴ（2－ブチル－2－オキサゾリン）による銅表面の改質

佐藤久美子，平原英俊，川村優文，會澤純雄，成田榮一

色材協会誌   82 ( 11 ) 487 - 492   2009年11月

学会誌  共著・分担

各種炭化物による水中微量有害物質の吸着

佐々木 陽，目時槙子，吉田舞美，平原英俊，會澤純雄，成田榮一

木質炭化学会誌   5 ( 2 ) 57 - 63   2009年02月

学術誌  共著・分担

Intercalation Behavior of 5-Fluorouracil into Mg-Al Layered Double Hydroxide

A. Yasutake, S. Aisawa, S. Takahashi, H. Hirahara, E. Narita

Clay Science   14 ( 1 ) 49 - 54   2008年12月

学術誌  共著・分担

Synthesis of Biopolymer Intercalated Inorganic-layered Materials: Intercalation of Collagen Peptide and Soybean Peptide into Zn-Al Layered Double Hydroxide and Layered Zinc Hydroxide

A. Yasutake, S. Aisawa, S. Takahashi, H. Hirahara, E. Narita

Journal of Physics and Chemistry of Solids   69   1542 - 1546   2008年06月  [査読有り]

学術誌  共著・分担

DOI

Intercalation of Collagen and Soybean Peptides into Zn-Al Layered Double Hydroxide

S. Aisawa, A. Yasutake, S. Takahashi, H. Hirahara, E. Narita

J. Nanosci. Nanotech.   8   428 - 431   2008年01月  [査読有り]

学術誌  共著・分担

Intercalation behavior of L-ascorbic acid into layered double hydroxides

Sumio Aisawa, Norihito Higashiyama, Satoshi Takahashi, Hidetoshi Hirahara, Daisaku Ikematsu, Hajime Kondo, Hirokazu Nakayama, Eiichi Narita

Applied Clay Science   35   146 - 154   2007年02月  [査読有り]

学術誌  共著・分担

Intercalation of amino acids and oligopeptides into Zn-Al layered double hydroxide by coprecipitation reaction

Sumio Aisawa, Shuji Sasaki, Satoshi Takahashi, Hidetoshi Hirahara,Hirokazu Nakayama, Eiichi Narita

Journal of Physics and Chemistry of Solids   67   920 - 925   2006年08月  [査読有り]

学術誌  共著・分担

架橋剤／無機層状複水酸化物複合体の合成とゴム架橋特性

平原英俊，會澤純雄，高橋諭，櫻庭英樹，秋葉洋一・成田榮一，森邦夫

日本ゴム協会誌   79   261 - 266   2006年05月  [査読有り]

学術誌  共著・分担

コンクリート型枠用木質廃材の炭化と生成炭化物の染料吸着特性

平原英俊，佐々木 陽，岩渕 文，會澤純雄，高橋 諭，成田榮一

Journal of the Society of Inorganic Materials, Japan   13   165 - 172   2006年04月

学術誌  共著・分担

Synthesis and adsorption properties of p-sulfonated calix[4 and 6]arene-intercalated layered double hydroxides

Satoru Sasaki, Sumio Aisawa, Hidetoshi Hirahara, Akira Sasaki, Hirokazu Nakayama, Eiichi Narita

Journal of Solid State Chemistry   179 ( 4 ) 1129 - 1135   2006年04月  [査読有り]

学術誌  共著・分担

Synthesis of p-sulfonated calix[4]arene-intercalated layered double hydroxides and their adsorption properties for organic molecules

Satoru Sasaki, Sumio Aisawa, Hidetoshi Hirahara, Akira Sasaki, Eiichi Narita

Journal of the European Ceramic Society   26 ( 43926 ) 655 - 659   2006年02月  [査読有り]

学術誌  共著・分担

Hydrothermal synthesis and physiochemical properties of Ni-hectorite

Takahito Nakakuki, Hidetoshi Hirahara, Sumio Aisawa, Satoshi Takahashi, Eiichi Narita

Clay Science   13 ( 1 ) 19 - 26   2005年12月  [査読有り]

学術誌  共著・分担

Intercalation of polyhydric alcohols into Mg-Al layered double hydroxide by calcination-rehydration reaction

Hidetoshi Hirahara, Sumio Aisawa, Takumi Akiyama, Satoshi Takahashi and Eiichi Narita

Clay Science   13 ( 1 ) 27 - 34   2005年12月  [査読有り]

学術誌  共著・分担

Intercalation of Natural Cyclodextrins into Layered Double Hydroxide by Calcination-rehydration Reaction

Satoru Sasaki, Sumio Aisawa, Hidetoshi Hirahara, Akira Sasaki, Hrokazu Nakayama, Eiichi Narita

Chemistry Letters   34   1192 - 1193   2005年08月  [査読有り]

学術誌  共著・分担

Synthesis and Ultraviolet-ray-shielding Property of Organic UV-absorbent Intercalated Layered Zinc Hydroxide

Sumio Aisawa, Eri Ishida, Satoshi Takahashi, Hidetoshi Hirahara, Eiichi Narita

Chemistry Letters   34 ( 5 ) 630 - 631   2005年05月  [査読有り]

学術誌  共著・分担

Mg-Al系層状複水酸化物による水溶液からのヒ素の除去

平原英俊，會澤純雄，佐藤寛恵，高橋諭，梅津芳生，成田榮一

粘土科学   45 ( 1 ) 6 - 13   2005年02月  [査読有り]

学術誌  共著・分担

Intercalation of Nucleotides into Layered Double Hydroxides by Ion-exchange Reaction

Sumio AISAWA, Yuuki OHNUMA, Kimihiro HIROSE, Satoshi TAKAHASHI, Hidetoshi HIRAHARA, Eiichi NARITA

Applied Clay Science   28   137 - 145   2005年01月  [査読有り]

学術誌  共著・分担

Synthesis and Physicochemical Properties of Zn-hectrite

Takahito Nakakuki, Kaori Fujimura, Sumio Aisawa, Hidetoshi Hirahara, Eiichi Narita

Clay Science   12   285 - 291   2004年12月

学術誌  共著・分担

Intercalation Behavior of Amino Acids into Zn–Al-Layered Double Hydroxide by Calcination-rehydration Reaction

Sumio AISAWA, Hiroko KUDO, Tomomi HOSHI, Satoshi TAKAHASHI, Hidetoshi HIRAHARA, Yoshio UMETSU, Eiichi NARITA

Journal of Solid State Chemistry   177   3987 - 3994   2004年11月  [査読有り]

学術誌  共著・分担

吸着剤添加による地熱水中のヒ素の除去

高橋諭，平原英俊，會澤純雄，成田榮一

温泉科学   53   162 - 170   2004年10月  [査読有り]

学会誌  共著・分担

Synthesis and Adsorption Property of Calixarene-p-sulfonate-intercalated Layered Double Hydroxides

Satoru Sasaki, Sumio Aisawa, Hidetoshi Hirahara, Akira Sasaki, Eiichi Narita

Chem. Lett.   33 ( 7 ) 790 - 791   2004年07月  [査読有り]

学術誌  共著・分担

Stereoselective Intercalation of Hexose for Layered Double Hydroxide by Calcination–Rehydration Reaction

Sumio Aisawa, Hidetoshi Hirahara, Satoshi Takahashi, Yoshio Umetsu, Eiichi Narita

Chem. Lett.   33 ( 3 ) 306   2004年02月  [査読有り]

学術誌  共著・分担

Study of Interfacial Chemistry on Direct Curing Adhesion between Ni-P Plating Rubber using 1,3,5,-Triazine-2,4,6-tritiol Monosodium Salt

Hidetoshi Hirahara, Sumio Aisawa, Kunio Mori, Eiichi Narita, Yoshiyuki Oishi

Surf. Interface Anal.   35   953 - 959   2003年12月  [査読有り]

学術誌  共著・分担

Sugar-anionic Clay Composite Materials: Intercalation of Pentoses in Layered Double Hydroxide

Sumio Aisawa, Hidetoshi Hirahara, Kayoko Ishiyama, Wataru Ogasawara, Yoshio Umetsu, Eiichi Narita

J .Solid State Chem.   174   342 - 348   2003年09月  [査読有り]

学術誌  共著・分担

Mg-Fe系層状複水酸化物の合成とその制酸特性

平原英俊, 澤井好幸, 會澤純雄, 高橋諭, 梅津芳生, 成田榮一

粘土科学   42 ( 2 ) 70 - 76   2002年12月  [査読有り]

学術誌  共著・分担

使用済みコンクリート型枠用合板から高吸着性炭化物の製造

平原英俊，佐々木陽，兼平賢一，會澤純雄，成田榮一

資源処理技術   49 ( 4 ) 181 - 186   2002年11月  [査読有り]

学会誌  共著・分担

Synthesis and Thermal Decomposition of Mn-Al Layered Double Hydroxides

Sumio Aisawa, Hidetoshi Hirahara, Hiroaki Uchiyama, Satoshi Takahashi, Eiichi Narita

J. Solid State Chem.,   167   152   2002年08月  [査読有り]

学術誌  共著・分担

Synthesis and Thermal Decomposition of Phenylalanine Intercalated Layered Double Hydroxides

Sumio Aisawa, Masahiro Izumi, Satoshi Takahashi, Hidetoshi Hirahara, Yoshio Umetsu, Eiichi Narita

Clay Science   12   17   2002年01月  [査読有り]

学術誌  共著・分担

Direct Intercalation of Amino Acids into Layered Double Hydroxides by Coprecipitation

Sumio Aisawa, Satoshi Takahashi, Wataru Ogasawara, Yoshio Umetsu, Eiichi Narita

J. Solid State Chem.   162   52   2001年11月  [査読有り]

学術誌  共著・分担

Coprecipitation Behavior of Amino Acids with Zn-Al Layered Double Hydroxide Precipitates

2. Sumio Aisawa, Satoshi Takahashi, Wataru Ogasawara, Yoshio Umetsu, Eiichi Narita

Clay Science   11   317   2000年12月

学術誌  共著・分担

Mn-Al系層状複水酸化物の合成とその熱分解挙動

成田榮一, 内山博昭, 會澤純雄, 梅津芳生

粘土科学   39   197 - 206   2000年06月  [査読有り]

学術誌  共著・分担