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Han Y, Kou M, Quan K, Wang J, Zhang H, Ihara H, Takafuji M, Qiu H. Enantioselective Glutamic Acid Discrimination and Nanobiological Imaging by Chiral Fluorescent Silicon Nanoparticles. Anal Chem 2024; 96:2173-2182. [PMID: 38261544 DOI: 10.1021/acs.analchem.3c05150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2024]
Abstract
Enantioselective discrimination of chiral molecules is essential in chemistry, biology, and medical science due to the configuration-dependent activities of enantiomers. Therefore, identifying a specific amino acid and distinguishing it from its enantiomer by using nanomaterials with outstanding performance are of great significance. Herein, blue- and green-emitting chiral silicon nanoparticles named bSiNPs and gSiNPs, respectively, with excellent water solubility, salt resistance, pH stability, photobleaching resistance, biocompatibility, and ability to promote soybean germination, were fabricated in a facile one-step method. Especially, chiral gSiNPs presented excellent fluorescence recognition ability for glutamic acid enantiomers within 1 min, and the enantiomeric recognition difference factor was as high as 9.0. The mechanism for enantiomeric fluorescence recognition was systematically explored by combining the fluorescence spectra with density functional theory (DFT) calculation. Presumably, the different Gibbs free energy and hydrogen-bonding interaction of the chiral recognition module with glutamic acid enantiomers mainly contributed to the difference in the fluorescence signals. Most noteworthy was the fact that the chiral gSiNPs can showcase not only the ability to recognize l- and d-glutamic acids in living cells but also the test strips fabricated by soaking gSiNPs can be applied for d-glutamic acid visual detection. As a result, this study provided insights into the design of multifunctional chiral sensing nanoplatforms for enantiomeric detection and other applications.
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Affiliation(s)
- Yangxia Han
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Manchang Kou
- College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Kaijun Quan
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Juanjuan Wang
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Haixia Zhang
- College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Hirotaka Ihara
- Department of Applied Chemistry and Biochemistry, Kumamoto University, Kumamoto 860-8555, Japan
| | - Makoto Takafuji
- Department of Applied Chemistry and Biochemistry, Kumamoto University, Kumamoto 860-8555, Japan
| | - Hongdeng Qiu
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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2
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Ryu N, Yamamoto Y, Okazaki Y, Hano N, Iwamoto Y, Shirosaki T, Nagaoka S, Oda R, Ihara H, Takafuji M. Controlled packing of chiral assembly scaffolds to promote chiral J-aggregation of carbocyanine dyes. Chem Commun (Camb) 2023; 59:11979-11982. [PMID: 37724566 DOI: 10.1039/d3cc03394e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/21/2023]
Abstract
Controlled aggregation of dyes is crucial to achieve their desired optical and electronic properties. Here, we report the induction of chiral J-aggregation of carbocyanine dyes by using lysine-derived amphiphile assemblies as scaffolds in water. The molecular structure of the amphiphiles affected the packing of the assembly. The tight packing with some flexibility promoted the formation of J-aggregates of the dyes with strong chiroptical properties.
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Affiliation(s)
- Naoya Ryu
- Materials Development Department, Kumamoto Industrial Research Institute, 3-11-38 Higashimachi, Higashi-ku, Kumamoto 862-0901, Japan.
| | - Yusei Yamamoto
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Yutaka Okazaki
- International Advanced Energy Science Research and Education Centre, Graduate School of Energy Science, Kyoto University, Yoshida-Honmachi, Sakyo-ku, Kyoto 606-8501, Japan
| | - Nanami Hano
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
- Université de Bordeaux, CNRS, Bordeaux INP, CBMN, UMR 5248, Pessac 33600, France
| | - Yuki Iwamoto
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Tomohiro Shirosaki
- Materials Development Department, Kumamoto Industrial Research Institute, 3-11-38 Higashimachi, Higashi-ku, Kumamoto 862-0901, Japan.
| | - Shoji Nagaoka
- Materials Development Department, Kumamoto Industrial Research Institute, 3-11-38 Higashimachi, Higashi-ku, Kumamoto 862-0901, Japan.
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Reiko Oda
- Université de Bordeaux, CNRS, Bordeaux INP, CBMN, UMR 5248, Pessac 33600, France
- WPI-Advanced Institute for Materials Research, Tohoku University, Katahira, Aoba-Ku, Sendai 980-8577, Japan
- International Research Organization for Advanced Science & Technology (IROAST), Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Hirotaka Ihara
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Makoto Takafuji
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
- International Research Organization for Advanced Science & Technology (IROAST), Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
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Pranee P, Scalabre A, Labrugere C, Ryu N, Yano A, Hano N, Talaga D, Okazaki Y, Pouget E, Nlate S, Bonhommeau S, Takafuji M, Wada T, Ihara H, Buffeteau T, Bassani DM, Oda R. Sequential chiral induction between organic and inorganic supramolecular helical assemblies for the in situ formation of chiral carbon dots. Chem Commun (Camb) 2023. [PMID: 37483164 DOI: 10.1039/d3cc02057f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2023]
Abstract
Self-organised helical bilayers of dicationic gemini surfactants confined in helical silica nanospace were transformed in situ to carbon dots (CDots) via pyrolysis. These water-dispersible CDots exhibit electronic absorption spanning the UV and visible range and possess symmetrical circular dichroism (CD) signals, the sign of which depends on the handedness of the helices.
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Affiliation(s)
- Piyanan Pranee
- Univ. Bordeaux, CNRS, Bordeaux INP, CBMN, UMR 5248, Pessac F-33600, France.
| | - Antoine Scalabre
- Univ. Bordeaux, CNRS, Bordeaux INP, CBMN, UMR 5248, Pessac F-33600, France.
| | | | - Naoya Ryu
- Materials Development Department, Kumamoto Industrial Research Institute, 3-11-38, Higashimachi, Higashi-ku, Kumamoto 862-0901, Japan
| | - Akira Yano
- Institute of Multidisciplinary Research for Advance Materials, Department of Chemistry, Graduate School of Science, Tohoku University, Sendai, 980-8577, Japan
| | - Nanami Hano
- Univ. Bordeaux, CNRS, Bordeaux INP, CBMN, UMR 5248, Pessac F-33600, France.
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - David Talaga
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM UMR 5255, Talence F-33400, France
| | - Yutaka Okazaki
- Graduate School of Energy Science, Kyoto University, Yoshida-Honmachi, Sakyo-ku, Kyoto 606-8501, Japan
| | - Emilie Pouget
- Univ. Bordeaux, CNRS, Bordeaux INP, CBMN, UMR 5248, Pessac F-33600, France.
| | - Sylvain Nlate
- Univ. Bordeaux, CNRS, Bordeaux INP, CBMN, UMR 5248, Pessac F-33600, France.
| | | | - Makoto Takafuji
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Takehiko Wada
- Institute of Multidisciplinary Research for Advance Materials, Department of Chemistry, Graduate School of Science, Tohoku University, Sendai, 980-8577, Japan
| | - Hirotaka Ihara
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
- National Institute of Technology, Okinawa College, Henoko, Nano 905-2192, Japan
| | - Thierry Buffeteau
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM UMR 5255, Talence F-33400, France
| | - Dario M Bassani
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM UMR 5255, Talence F-33400, France
| | - Reiko Oda
- Univ. Bordeaux, CNRS, Bordeaux INP, CBMN, UMR 5248, Pessac F-33600, France.
- WPI-Advanced Institute for Materials Research, Tohoku University, 2-1-1, Katahira, Aoba-Ku, Sendai 980-8577, Japan
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Chen J, Wang Y, Yu Y, Wang J, Liu J, Ihara H, Qiu H. Composite materials based on covalent organic frameworks for multiple advanced applications. Exploration (Beijing) 2023; 3:20220144. [PMID: 37933382 PMCID: PMC10624394 DOI: 10.1002/exp.20220144] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Accepted: 03/10/2023] [Indexed: 11/08/2023]
Abstract
Covalent organic frameworks (COFs) stand for a class of emerging crystalline porous organic materials, which are ingeniously constructed with organic units through strong covalent bonds. Their excellent design capabilities, and uniform and tunable pore structure make them potential materials for various applications. With the continuous development of synthesis technique and nanoscience, COFs have been successfully combined with a variety of functional materials to form COFs-based composites with superior performance than individual components. This paper offers an overview of the development of different types of COFs-based composites reported so far, with particular focus on the applications of COFs-based composites. Moreover, the challenges and future development prospects of COFs-based composites are presented. We anticipate that the review will provide some inspiration for the further development of COFs-based composites.
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Affiliation(s)
- Jia Chen
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhouChina
| | - Yuting Wang
- Research Center for Analytical Sciences, Department of Chemistry, College of SciencesNortheastern UniversityShenyangChina
| | - Yongliang Yu
- Research Center for Analytical Sciences, Department of Chemistry, College of SciencesNortheastern UniversityShenyangChina
| | - Jianhua Wang
- Research Center for Analytical Sciences, Department of Chemistry, College of SciencesNortheastern UniversityShenyangChina
| | - Juewen Liu
- Department of Chemistry, Waterloo Institute for NanotechnologyUniversity of WaterlooWaterlooOntarioCanada
| | - Hirotaka Ihara
- Department of Applied Chemistry and BiochemistryKumamoto UniversityChuo‐kuKumamotoJapan
| | - Hongdeng Qiu
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhouChina
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5
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Hu Y, Kadotani J, Kuwahara Y, Ihara H, Takafuji M. Zwitterionic polymer-terminated porous silica stationary phases for highly selective separation in hydrophilic interaction chromatography. J Chromatogr A 2023; 1693:463885. [PMID: 36848731 DOI: 10.1016/j.chroma.2023.463885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 02/17/2023] [Accepted: 02/17/2023] [Indexed: 02/25/2023]
Abstract
We described two novel zwitterionic polymer-terminated porous silica stationary phases containing the same pyridinium cation and anions of different side chains (carboxylate and phosphonate groups) for use in hydrophilic interaction liquid chromatography (HILIC). These two novel columns were prepared by polymerizing 4-vinylpyridine and grafting it onto a silica surface, followed by quaternization reaction with 3-bromopropionic acid (Sil-VPC24) and (3-bromopropyl) phosphonic acid (Sil-VPP24), which possess positively charged pyridinium groups, and negatively charged carboxylate and phosphonate groups, respectively. The products obtained were verified through relevant characterization techniques such as elemental analysis, Fourier-transform infrared spectroscopy, thermogravimetric analysis, Zeta potential analysis, and Brunauer-Emmett-Teller analysis. The retention properties and mechanisms of different types of compounds (neutral, cationic, and anionic) on the two zwitterionic-modified silica stationary phases were studied by varying the buffer salt concentration and pH of the eluent. The separation of phenol and aromatic acids, disubstituted benzene isomers, sulfonamide drugs, as well as nucleosides/nucleobases were investigated on the two packed novel columns and a commercial zwitterionic column in identical HILIC mode, ensuring a thorough comparison between both novel columns and with a commercial standard. The results illustrated that various compounds could be separated up to various efficiencies based on the mechanism of hydrophilic interaction-based retention between the solutes and the two zwitterionic polymer stationary phases. The Sil-VPP24 column demonstrated the best separation performance out of the three, as well as flexible selectivity and excellent resolution. Both novel columns exhibited excellent stability and chromatographic repeatability for the separation of seven nucleosides and bases.
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Affiliation(s)
- Yongxing Hu
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Jun Kadotani
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Yutaka Kuwahara
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Hirotaka Ihara
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan; National Institute of Technology, Okinawa College, 905, Henoko, Okinawa 905-2192, Japan
| | - Makoto Takafuji
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan.
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6
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Yoshida K, Kuwahara Y, Hano N, Horie Y, Takafuji M, Ryu N, Nagaoka S, Oda R, Ihara H. Chiral H-aggregation-induced large stokes shift with CPL generation assisted by α-helical poly(L-lysine) substructure. Chirality 2023. [PMID: 36943171 DOI: 10.1002/chir.23553] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 02/14/2023] [Accepted: 02/19/2023] [Indexed: 03/23/2023]
Abstract
Fluorescent materials with large Stokes shifts have significant potential for use in optical applications. Typically, a synthetic design strategy is utilized for this purpose. In this study, we demonstrated a novel method by binding a chiral template to a nonchiral fluorescent agent without chemical modification. Specifically, α-helical poly(L-lysine) was employed as the chiral template, which interacted with a disulfonic fluorescent dye, such as NK2751. The dye caused excimer luminescence by inducing the formation of a chirally H-aggregated dimer only when poly(L-lysine) was in an α-helical shape. The result was a Stokes shift of 230 nm. Similar effects were not observed when the chiral template was in a random coil condition and the Stokes shift was less than 40 nm. These findings imply that H-aggregated dimerization, which often results in quenching, permits the electronic transitions necessary for fluorescence events by the formation of the chirally twisted state. In addition, we introduce for the first time the generation of circularly polarized luminescence using the chirality induction phenomena in a dye supported by poly(L-lysine).
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Affiliation(s)
- Kyohei Yoshida
- Department of Applied Chemistry and Biochemistry, Kumamoto University, Kumamoto, Japan
- Kumamoto Industrial Research Institute, Kumamoto, Japan
| | - Yutaka Kuwahara
- Department of Applied Chemistry and Biochemistry, Kumamoto University, Kumamoto, Japan
| | - Nanami Hano
- Department of Applied Chemistry and Biochemistry, Kumamoto University, Kumamoto, Japan
- University of Bordeaux, CNRS, Bordeaux INP, CBMN, Pessac, France
| | - Yumi Horie
- Department of Applied Chemistry and Biochemistry, Kumamoto University, Kumamoto, Japan
| | - Makoto Takafuji
- Department of Applied Chemistry and Biochemistry, Kumamoto University, Kumamoto, Japan
| | - Naoya Ryu
- Kumamoto Industrial Research Institute, Kumamoto, Japan
| | - Shoji Nagaoka
- Department of Applied Chemistry and Biochemistry, Kumamoto University, Kumamoto, Japan
- Kumamoto Industrial Research Institute, Kumamoto, Japan
| | - Reiko Oda
- University of Bordeaux, CNRS, Bordeaux INP, CBMN, Pessac, France
| | - Hirotaka Ihara
- Department of Applied Chemistry and Biochemistry, Kumamoto University, Kumamoto, Japan
- Okinawa College, National Institute of Technology, Okinawa, Japan
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Olivier C, Nagamoto N, Mori T, McClenaghan ND, Jonusauskas G, Kauffmann B, Kuwahara Y, Takafuji M, Ihara H, Ferrand Y. A π-Extended Phenanthrene-Fused Aza[7]helicenium as Novel Chiroptically-Active Architecture in Organic and Aqueous Media. Org Chem Front 2023. [DOI: 10.1039/d2qo01942f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The synthesis and characterization of an original π-extended cationic azahelicene is reported. The phenanthrene-fused aza[7]helicene derivative encompasses a total of ten aromatic fused rings leading to a dissymmetric yet helically...
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Toyofuji A, Hano N, Yamaguchi Y, Wakiya T, Ihara H, Takafuji M. Preparation of Hybrid Microspheres with Homogeneously Dispersed Nanosilica using In-situ Sol-Gel Reaction inside Polystyrene Matrix. CHEM LETT 2022. [DOI: 10.1246/cl.220121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Ayumi Toyofuji
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan
| | - Nanami Hano
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan
| | - Yuya Yamaguchi
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan
| | - Takeshi Wakiya
- Sekisui Chemical Co. Ltd., 2-1 Hyakuyama, Shimamoto-cho, Mishima-gun, Osaka 618-0021, Japan
| | - Hirotaka Ihara
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan
- Okinawa College, National Institute of Technology, 905, Henoko, Okinawa 905-2192, Japan
| | - Makoto Takafuji
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan
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Hano N, Ryu N, Nagaoka S, Ihara H, Takafuji M. Selective reflection enhancement by controlling of surface-layering structure of inorganic nanoparticles on polymer microspheres. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.128188] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Kuwahara Y, Ito M, Iwamoto T, Takafuji M, Ihara H, Ryu N, Mani T. Chemical redox-induced chiroptical switching of supramolecular assemblies of viologens. RSC Adv 2022; 12:2019-2025. [PMID: 35425216 PMCID: PMC8979179 DOI: 10.1039/d1ra08984f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Accepted: 01/03/2022] [Indexed: 01/24/2023] Open
Abstract
A chiral supramolecular assembly exhibiting redox-induced changes in its chiroptical properties was prepared using viologen-modified glutamide (G-V2+) derivatives. Achiral viologen moieties in the G-V2+ assembly were chirally orientated by glutamide groups, affording a unique orange-colored solution, with a visible absorption band at around 470 nm, having electronic circular dichroism (CD) signals (molar ellipticity [θ] = 0.58 × 105 deg cm2 dmol−1: absorption dissymmetry factors (g) = 5.2 × 10−3 at 512 nm). The G-V2+ could be reduced to its cation radical (G-V+˙) but retains its chiral assembly. After chemical reduction, the color change from orange to blueish violet, indicating an absorption band at approximately 560 nm, and the sign change of the CD signal from positive to negative ([θ] = −0.36 × 105 deg cm2 dmol−1; g = −2.9 × 10−3 at 580 nm) were observed in water. Subsequent oxidation re-introduces the G-V2+ chiroptical behavior before reduction. Chiral assemblies of viologen-modified glutamide derivatives exhibit a unique orange-color and CD signals by CT complexes of viologen groups and electro-responsive chiroptical switching behaviors in the visible region in water.![]()
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Affiliation(s)
- Yutaka Kuwahara
- Department of Applied Chemistry and Biochemistry, Kumamoto University 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555 Japan .,International Research Organization for Advanced Science and Technology (IROAST), Kumamoto University 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555 Japan
| | - Mio Ito
- Department of Applied Chemistry and Biochemistry, Kumamoto University 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555 Japan
| | - Tatsumi Iwamoto
- Department of Applied Chemistry and Biochemistry, Kumamoto University 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555 Japan
| | - Makoto Takafuji
- Department of Applied Chemistry and Biochemistry, Kumamoto University 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555 Japan .,International Research Organization for Advanced Science and Technology (IROAST), Kumamoto University 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555 Japan
| | - Hirotaka Ihara
- Department of Applied Chemistry and Biochemistry, Kumamoto University 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555 Japan .,National Institute of Technology, Okinawa College 905 Henoko, Nago Okinawa 905-2192 Japan
| | - Naoya Ryu
- Materials Development Department, Kumamoto Industrial Research Institute 3-11-38 Higashimachi Higashi-ku Kumamoto 862-0901 Japan
| | - Tomoyasu Mani
- Department of Chemistry, University of Connecticut 55 N. Eagleville Rd Storrs CT 06269-3060 USA
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Sultana N, Kawahara T, Kuwahara Y, Ihara H, Takafuji M. Supramolecular assembly of glutamide attached terpyridine-lanthanide complex with enhanced chirality and high fluorescence quantum yield. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2021.138968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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12
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Mallik AK, Noguchi H, Rahman MM, Takafuji M, Ihara H. Inside Front Cover: Selectivity enhancement for the separation of shape‐constrained isomers by particle size‐derived molecular ordering and density in reversed‐phase liquid chromatography. Sep Sci plus 2021. [DOI: 10.1002/sscp.202170035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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13
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Mallik AK, Noguchi H, Rahman MM, Takafuji M, Ihara H. Selectivity enhancement for the separation of shape‐constrained isomers by particle size‐derived molecular ordering and density in reversed‐phase liquid chromatography. Sep Sci plus 2021. [DOI: 10.1002/sscp.202100017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Abul K. Mallik
- Department of Applied Chemistry and Chemical Engineering, Faculty of Engineering and Technology University of Dhaka Dhaka Bangladesh
| | - Hiroki Noguchi
- Department of Applied Chemistry and Biochemistry, Faculty of Engineering Kumamoto University Kumamoto Japan
| | - Mohammed Mizanur Rahman
- Department of Applied Chemistry and Chemical Engineering, Faculty of Engineering and Technology University of Dhaka Dhaka Bangladesh
| | - Makoto Takafuji
- Department of Applied Chemistry and Biochemistry, Faculty of Engineering Kumamoto University Kumamoto Japan
| | - Hirotaka Ihara
- Department of Applied Chemistry and Biochemistry, Faculty of Engineering Kumamoto University Kumamoto Japan
- National Institute of Technology Okinawa College Nago Japan
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14
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Scalabre A, Okazaki Y, Kuppan B, Buffeteau T, Caroleo F, Magna G, Monti D, Paolesse R, Stefanelli M, Nlate S, Pouget E, Ihara H, Bassani DM, Oda R. Chirality induction to achiral molecules by silica-coated chiral molecular assemblies. Chirality 2021; 33:494-505. [PMID: 34296461 DOI: 10.1002/chir.23339] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 06/22/2021] [Accepted: 07/02/2021] [Indexed: 01/04/2023]
Abstract
Hybrid silica-organic nanohelices are used to organize a large variety of nonchiral small organic molecules or inorganic anions to nanometer-sized assemblies. Such chiral organization of achiral molecules induces chiroptical properties as detected by vibrational or electronic circular dichroism (CD), as well as from circularly polarized luminescence (CPL).
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Affiliation(s)
- Antoine Scalabre
- Institute of Chemistry & Biology of Membrane & Nanoobjects (UMR 5248 CBMN), CNRS - Université de Bordeaux - Bordeaux INP, Pessac, France
| | - Yutaka Okazaki
- Graduate School of Energy Science, Kyoto University, Kyoto, Japan
| | - Balamurugan Kuppan
- Institute of Chemistry & Biology of Membrane & Nanoobjects (UMR 5248 CBMN), CNRS - Université de Bordeaux - Bordeaux INP, Pessac, France
| | - Thierry Buffeteau
- Institut des Sciences Moléculaires (UMR5255 ISM), CNRS - Université de Bordeaux, Talence, France
| | - Fabrizio Caroleo
- Dept. of Chemical Science and Technologies, University of Rome Tor Vergata, Rome, Italy
| | - Gabriele Magna
- Dept. of Chemical Science and Technologies, University of Rome Tor Vergata, Rome, Italy
| | - Donato Monti
- Dept. of Chemical Science and Technologies, University of Rome Tor Vergata, Rome, Italy
| | - Roberto Paolesse
- Dept. of Chemical Science and Technologies, University of Rome Tor Vergata, Rome, Italy
| | - Manuela Stefanelli
- Dept. of Chemical Science and Technologies, University of Rome Tor Vergata, Rome, Italy
| | - Sylvain Nlate
- Institute of Chemistry & Biology of Membrane & Nanoobjects (UMR 5248 CBMN), CNRS - Université de Bordeaux - Bordeaux INP, Pessac, France
| | - Emilie Pouget
- Institute of Chemistry & Biology of Membrane & Nanoobjects (UMR 5248 CBMN), CNRS - Université de Bordeaux - Bordeaux INP, Pessac, France
| | - Hirotaka Ihara
- Department of Applied Chemistry and Biochemistry, Kumamoto University, Kumamoto, Japan
| | - Dario M Bassani
- Institut des Sciences Moléculaires (UMR5255 ISM), CNRS - Université de Bordeaux, Talence, France
| | - Reiko Oda
- Institute of Chemistry & Biology of Membrane & Nanoobjects (UMR 5248 CBMN), CNRS - Université de Bordeaux - Bordeaux INP, Pessac, France
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15
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Kawamoto N, Hu Y, Kuwahara Y, Ihara H, Takafuji M. A Molecular Shape Recognitive HPLC Stationary Phase Based on a Highly Ordered Amphiphilic Glutamide Molecular Gel. Nanomaterials (Basel) 2021; 11:1574. [PMID: 34203819 PMCID: PMC8232745 DOI: 10.3390/nano11061574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 06/08/2021] [Accepted: 06/12/2021] [Indexed: 11/16/2022]
Abstract
Chiral glutamide-derived lipids form self-assembled fibrous molecular gels that can be used as HPLC organic phases. In this study, HPLC separation efficiency was improved through the addition of branched amphiphilic glutamide lipids to the side chains of a terminally immobilized flexible polymer backbone. Poly(4-vinylpyridine) with a trimethoxysilyl group at one end was grafted onto the surface of porous silica particles (Sil-VP15, polymerization degree = 15), and the pyridyl side chains were quaternized with a glutamide lipid having a bromide group (BrG). Elemental analysis indicated that the total amount of the organic phase of the prepared stationary phase (Sil-VPG15) was 38.0 wt%, and the quaternization degree of the pyridyl groups was determined to be 32.5%. Differential scanning calorimetric analysis of a methanol suspension of Sil-VPG15 indicated that the G moieties formed a highly ordered structure below the phase transition temperature even on the silica surface, and the ordered G moieties exhibited a gel-to-liquid crystalline phase transition. Compared with a commercially available octadecylated silica column, the Sil-VPG15 stationary phase showed high selectivity toward polycyclic aromatic hydrocarbons, and particularly excellent separations were obtained for geometrical and positional isomers. Sil-VPG15 also showed highly selective separation for phenol derivatives, and bio-related molecules containing phenolic groups such as steroids were successfully separated. These separation abilities are probably due to multiple interactions between the elutes and the highly ordered functional groups, such as the pyridinium and amide groups, on the highly ordered molecular gel having self-assembling G moieties.
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Affiliation(s)
- Naoki Kawamoto
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan; (N.K.); (Y.H.); (Y.K.)
| | - Yongxing Hu
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan; (N.K.); (Y.H.); (Y.K.)
| | - Yutaka Kuwahara
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan; (N.K.); (Y.H.); (Y.K.)
| | - Hirotaka Ihara
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan; (N.K.); (Y.H.); (Y.K.)
- National Institute of Technology, Okinawa College, 905 Henoko, Nago, Okinawa 905-2192, Japan
| | - Makoto Takafuji
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan; (N.K.); (Y.H.); (Y.K.)
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16
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Kaga M, Takeuchi H, Iwahara K, Ihara H. A case of hypereosinophilia with digital ischaemia successfully treated with intravenous prostaglandin E 1. Skin Health Dis 2021; 1:e32. [PMID: 35664976 PMCID: PMC9060027 DOI: 10.1002/ski2.32] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 03/24/2021] [Accepted: 03/24/2021] [Indexed: 11/09/2022]
Abstract
In the therapeutic management of eosinophilic disorder, it is important to prevent hypereosinophilia (HE)-related organ damage even in the process of diagnosis. We describe here a unique clinical and histopathological findings of the patient with HE accompanied with digital ischaemia. Treatment with intravenous prostaglandin E1 was essential for digital ischaemia in our case while benralizumab, humanized monoclonal antibody against interleukin-5 receptorα, did not affect. Our case suggests an earlier intervention for digital ischaemia in the therapeutic management of eosiniphilic disorder.
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Affiliation(s)
- M. Kaga
- Division of DermatologyKoto HospitalTokyoJapan
- Department of Dermatology and AllergologyFaculty of Medicine, Graduate School of Medicine, Juntendo UniversityTokyoJapan
| | - H. Takeuchi
- Division of DermatologyKoto HospitalTokyoJapan
| | - K. Iwahara
- Division of DermatologyKoto HospitalTokyoJapan
| | - H. Ihara
- Division of Respiratory MedicineKoto HospitalTokyoJapan
- Department of Respiratory MedicineFaculty of Medicine, Graduate School of Medicine, Juntendo UniversityTokyoJapan
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17
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Nagatomo N, Oishi H, Kuwahara Y, Takafuji M, Oda R, Hamada T, Ihara H. Enantioselective Self-Assembled Nanofibrillar Network with Glutamide-Based Organogelator. Nanomaterials (Basel) 2021; 11:nano11061376. [PMID: 34070996 PMCID: PMC8224585 DOI: 10.3390/nano11061376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 05/16/2021] [Accepted: 05/19/2021] [Indexed: 11/16/2022]
Abstract
A chiral molecular gelation system, as a chiral host, was used to effectively realize enantioselectivity using the simple carboxylic acid functional group. For this purpose, an L-glutamic-acid-based lipidic amphiphile (G-CA) with a carboxylic head group was selected and its responsiveness to cationic guest molecules was investigated. The dispersion morphology of G-CA in its solution state was examined by confocal and transmission electron microscopies, while interactions between the G-CA, as the host system, and guest molecules were evaluated by UV-visible, circular dichroism, and fluorescence spectroscopies. As a result, enantioselectivity was effectively induced when G-CA formed highly ordered aggregates that provide negatively charged surfaces in which carboxyl groups are assembled in highly ordered states, and when the two cationic groups of the guest molecule are attached to this surface through multiple interactions.
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Affiliation(s)
- Nao Nagatomo
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan; (N.N.); (H.O.); (Y.K.)
| | - Hisashi Oishi
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan; (N.N.); (H.O.); (Y.K.)
| | - Yutaka Kuwahara
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan; (N.N.); (H.O.); (Y.K.)
| | - Makoto Takafuji
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan; (N.N.); (H.O.); (Y.K.)
- Correspondence: (M.T.); (H.I.); Tel.: +81-96-342-3662 (M.T. & H.I.)
| | - Reiko Oda
- Institut de Chimie & Biologie des Membranes & des Nano-objects, CNRS, 33607 Pessac, France;
| | - Taisuke Hamada
- National Institute of Technology, Okinawa College, 905 Henoko, Nago, Okinawa 905-2192, Japan;
| | - Hirotaka Ihara
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan; (N.N.); (H.O.); (Y.K.)
- National Institute of Technology, Okinawa College, 905 Henoko, Nago, Okinawa 905-2192, Japan;
- Correspondence: (M.T.); (H.I.); Tel.: +81-96-342-3662 (M.T. & H.I.)
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18
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Rahman MM, Alam MA, Ihara H, Takafuji M. Hetero-network hydrogels crosslinked with silica nanoparticles for strategic control of thermal responsive property. Soft Matter 2021; 17:4615-4622. [PMID: 33949589 DOI: 10.1039/d1sm00191d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Two thermoresponsive copolymers with different lower critical solution temperatures (LCSTs) were crosslinked using silica nanoparticles to afford hybrid hydrogels exhibiting two distinct thermo-responsivities. The thermo-responsive copolymers were synthesised by free radical polymerisation from a monomer with a reactive side chain (3-methacryloxypropyl trimethoxysilane (S)) and water-soluble monomers with different thermo-responsivities (N-isopropyl acrylamide (N) or N-(3-methoxy propyl)acrylamide (M)). The obtained reactive copolymers, poly(N-isopropyl acrylamide-co-3-methacryloxypropyl trimethoxysilane) (pNS) and poly(N-(3-methoxy propyl acrylamide-co-3-methacryloxypropyl trimethoxysilane)) (pMS), were characterized by multiple techniques including 1H NMR and FTIR spectroscopy. The hetero-network hybrid hydrogels were easily prepared by mixing aqueous solutions of the copolymer with an aqueous colloidal silica suspension; their gelation properties could be tuned by varying the amounts of pNS, pMS, and Si. Differential scanning calorimetric analysis showed that the hetero-network hydrogel exhibited a critical two-step phase transition at temperatures around the LCST of each copolymer (33 °C for pNS, 73 °C for pMS), indicating that each polymer does not disturb the phase transitions of the other. The deswelling of the hetero-network hydrogel could be controlled with respect to temperature and time.
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Affiliation(s)
- M Maria Rahman
- Department of Applied Chemistry and Biochemistry, Faculty of Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, Japan. and Department of Chemistry, Faculty of Science, Jagannath University, Dhaka-1100, Bangladesh
| | - Md Ashraful Alam
- Department of Applied Chemistry and Chemical Engineering, Faculty of Engineering and Technology, Noakhali Science and Technology University, Noakhali, Sonapur-3814, Bangladesh
| | - Hirotaka Ihara
- Department of Applied Chemistry and Biochemistry, Faculty of Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, Japan. and Okinawa College, National Institute of Technology, 905 Henoko, Nago, Okinawa 905-2192, Japan
| | - Makoto Takafuji
- Department of Applied Chemistry and Biochemistry, Faculty of Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, Japan.
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19
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Harada T, Yanagita H, Ryu N, Okazaki Y, Kuwahara Y, Takafuji M, Nagaoka S, Ihara H, Oda R. Lanthanide ion-doped silica nanohelix: a helical inorganic network acts as a chiral source for metal ions. Chem Commun (Camb) 2021; 57:4392-4395. [PMID: 33949478 DOI: 10.1039/d1cc01112j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
We demonstrate that lanthanide ions doped in nanometrical silica helices with a chirally arranged siloxane network without any organic mediates show induced chiroptical properties such as circular dichroism and circularly polarized luminescence.
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Affiliation(s)
- Tomoyuki Harada
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555, Japan.
| | - Hiroshi Yanagita
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555, Japan.
| | - Naoya Ryu
- Materials Development Department, Kumamoto Industrial Research Institute, 3-11-38 Higashimachi, Higashi-ku, Kumamoto 862-0901, Japan.
| | - Yutaka Okazaki
- International Research and Education Centre of Advanced Energy Science, Graduate School of Energy Science, Kyoto University, Yoshida-Honmachi, Sakyo-ku Kyoto 606-8501, Japan
| | - Yutaka Kuwahara
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555, Japan.
| | - Makoto Takafuji
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555, Japan.
| | - Shoji Nagaoka
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555, Japan. and Materials Development Department, Kumamoto Industrial Research Institute, 3-11-38 Higashimachi, Higashi-ku, Kumamoto 862-0901, Japan.
| | - Hirotaka Ihara
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555, Japan.
| | - Reiko Oda
- Institut de Chimie & Biologie des Membranes & des Nano-objets (UMR5248 CBMN), CNRS, Université de Bordeaux, Institut Polytechnique Bordeaux 2 rue Robert Escarpit, Pessac 33607, France.
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20
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Yeasmin F, Mallik AK, Chisty AH, Robel FN, Shahruzzaman M, Haque P, Rahman MM, Hano N, Takafuji M, Ihara H. Remarkable enhancement of thermal stability of epoxy resin through the incorporation of mesoporous silica micro-filler. Heliyon 2021; 7:e05959. [PMID: 33521354 PMCID: PMC7820568 DOI: 10.1016/j.heliyon.2021.e05959] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 10/23/2020] [Accepted: 01/08/2021] [Indexed: 11/21/2022] Open
Abstract
For the first time, we incorporated mesoporous micro-silica (5 μm, pore size = 50 nm) as a filler in epoxy resin aiming to enter polymer into the pore of the silica. As expected, the thermal stability of the composite increased remarkably, followed by noteworthy thermal degradation kinetics when compared to the controlled cured epoxy resin. Composites were prepared by the direct dispersion of modified nano-silica, modified mesoporous micro-silica, unmodified mesoporous micro-silica, non-porous micro-silica, and irregular micro-silica of various pore sizes as fillers in diglycidyl ether of bisphenol-A epoxy resin via ultra-sonication and shear mixing, followed by oven-curing with 4,4-diaminodiphenyl sulfone. DSC and TGA analyses demonstrated a higher glass transition temperature (increased by 3.65–5.75 °C) and very high activation energy for thermal degradation (average increase = 46.2%) was obtained for the same unmodified silica composite compared to pure epoxy, respectively.
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Affiliation(s)
- Farzana Yeasmin
- Department of Applied Chemistry and Chemical Engineering, Faculty of Engineering and Technology, University of Dhaka, Dhaka, 1000, Bangladesh
| | - Abul K Mallik
- Department of Applied Chemistry and Chemical Engineering, Faculty of Engineering and Technology, University of Dhaka, Dhaka, 1000, Bangladesh
| | - Adib H Chisty
- Department of Applied Chemistry and Chemical Engineering, Faculty of Engineering and Technology, University of Dhaka, Dhaka, 1000, Bangladesh
| | - Fataha N Robel
- Department of Applied Chemistry and Chemical Engineering, Noakhali Science and Technology University, Sonapur, Noakhali, 3814, Bangladesh
| | - Md Shahruzzaman
- Department of Applied Chemistry and Chemical Engineering, Faculty of Engineering and Technology, University of Dhaka, Dhaka, 1000, Bangladesh
| | - Papia Haque
- Department of Applied Chemistry and Chemical Engineering, Faculty of Engineering and Technology, University of Dhaka, Dhaka, 1000, Bangladesh
| | - Mohammed Mizanur Rahman
- Department of Applied Chemistry and Chemical Engineering, Faculty of Engineering and Technology, University of Dhaka, Dhaka, 1000, Bangladesh
| | - Nanami Hano
- Department of Applied Chemistry and Biochemistry, Faculty of Engineering, Kumamoto University, 2-39-1 Kurokami, Kumamoto, 860-8555, Japan
| | - Makoto Takafuji
- Department of Applied Chemistry and Biochemistry, Faculty of Engineering, Kumamoto University, 2-39-1 Kurokami, Kumamoto, 860-8555, Japan
| | - Hirotaka Ihara
- Department of Applied Chemistry and Biochemistry, Faculty of Engineering, Kumamoto University, 2-39-1 Kurokami, Kumamoto, 860-8555, Japan
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21
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Maria Rahman M, Al Foisal J, Ihara H, Takafuji M. Efficient removal of methylene blue dye from an aqueous solution using silica nanoparticle crosslinked acrylamide hybrid hydrogels. NEW J CHEM 2021. [DOI: 10.1039/d1nj04383h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Silica nanoparticle cross-linked acrylamide polymer hydrogels showed promising adsorption behavior for organic dye removal in a neutral to basic pH range with a rapid adsorption rate, high adsorption capacity and excellent regeneration efficacy.
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Affiliation(s)
- M. Maria Rahman
- Department of Applied Chemistry and Biochemistry, Faculty of Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, Japan
- Department of Chemistry, Faculty of Science, Jagannath University, Dhaka-1100, Bangladesh
| | - Jannat Al Foisal
- Department of Applied Chemistry and Biochemistry, Faculty of Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, Japan
| | - Hirotaka Ihara
- Department of Applied Chemistry and Biochemistry, Faculty of Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, Japan
- Okinawa College, National Institute of Technology, 905 Henoko, Ns, Okinawa, 905-2192, Japan
| | - Makoto Takafuji
- Department of Applied Chemistry and Biochemistry, Faculty of Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, Japan
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22
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Tan H, Liu T, Zhang X, Shan Q, Chen J, Li Z, Ihara H, Qiu H. Preparation of Vortex Porous Graphene Chiral Membrane for Enantioselective Separation. Anal Chem 2020; 92:13630-13633. [DOI: 10.1021/acs.analchem.0c02446] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Hongxin Tan
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100049, China
| | - Tianqi Liu
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Xin Zhang
- School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - Qiang Shan
- School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - Jia Chen
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Zhan Li
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Hirotaka Ihara
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Hongdeng Qiu
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100049, China
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23
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Mashima S, Ryu N, Kuwahara Y, Takafuji M, Jintoku H, Oda R, Ihara H. Multi-chiro-informative System Created by a Porphyrin-functionalized Chiral Molecular Assembly. CHEM LETT 2020. [DOI: 10.1246/cl.200018] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Sayaka Mashima
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Naoya Ryu
- Materials Development Department, Kumamoto Industrial Research Institute, 3-11-38 Higashimachi, Higashi-ku, Kumamoto 862-0901, Japan
| | - Yutaka Kuwahara
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Makoto Takafuji
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Hirokuni Jintoku
- Research Institute for Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology, Central 5-2, 1-1-1 Higashi, Tsukuba 305-8565, Japan
| | - Reiko Oda
- Institut de Chimie & Biologie des Membranes & des Nano-objets (UMR5248 CBMN), CNRS, Université de Bordeaux, Institut Polytechnique Bordeaux, 2 rue Robert Escarpit, 33607 Pessac, France
| | - Hirotaka Ihara
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
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24
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Jintoku H, Ihara H. Chiroptical property tuning of supramolecular assemblies in polymer matrices. Chirality 2020; 32:704-709. [PMID: 32078750 DOI: 10.1002/chir.23201] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 02/05/2020] [Accepted: 02/11/2020] [Indexed: 01/02/2023]
Abstract
Chiroptical materials have received much attention in diverse fields for applications such as displays, sensors, smart memory devices, and catalysis. Here, we develop a simple fabrication method for polymer films with tunable chiroptical properties using small amounts of self-assembling fluorescent dye as an additive. Both the circular dichroism and circularly polarized luminescence signals of the film can be tuned between positive and negative values by thermal treatment. The chiroptical properties can be varied by slight changes in the orientation of chiral pyrene moieties in self-assembled nanofibril networks.
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Affiliation(s)
- Hirokuni Jintoku
- Research Institute for Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
| | - Hirotaka Ihara
- Department of Applied Chemistry and Biochemistry, Kumamoto University, Kumamoto, Japan
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25
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Saita K, Nagaoka S, Shirosaki T, Horikawa M, Ihara H. Dispersible chitosan particles showing bacteriostatic effect against Streptococcus mutans and their dental polishing effect. Biosci Biotechnol Biochem 2020; 84:1265-1273. [PMID: 32009563 DOI: 10.1080/09168451.2020.1723402] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Nontoxic and biodegradable chitosan is potentially useful in various applications. We prepared submicron chitosan particles with high dispersibility in aqueous solution utilizing the electrostatic interaction phase separation method described in a previous report, but using citric acid as the polyvalent anionic compound instead of sodium sulfate. The submicron chitosan particles showed significant antibacterial activity and anti-adhesive action against Streptococcus mutans, even at around neutral pH. However, chitosan granules showed no antibacterial activity under the same conditions. The addition of the chitosan particles to dental polishing paste provided stainless steel discs (the same hardness as dental enamel) with a smoother surface than polishing paste without additives. In view of their submicron size and antibacterial activity, chitosan particles could potentially be multifunctional components of oral and dental cleaning materials.
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Affiliation(s)
- Kanako Saita
- Kumamoto Industrial Research Institute, Kumamoto, Japan
| | - Shoji Nagaoka
- Kumamoto Industrial Research Institute, Kumamoto, Japan.,Department of Applied Chemistry & Biochemistry, Kumamoto University, Kumamoto, Japan
| | | | - Maki Horikawa
- Kumamoto Industrial Research Institute, Kumamoto, Japan
| | - Hirotaka Ihara
- Department of Applied Chemistry & Biochemistry, Kumamoto University, Kumamoto, Japan
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26
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Takafuji M, Kawamoto N, Hano N, Sasahara K, Nagaoka S, Ihara H. Spherical filler‐promoting thermally conductive pathway in graphite‐containing polymer composites for high heat radiation. Journal of Polymer Science 2020. [DOI: 10.1002/pol.20190182] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Makoto Takafuji
- Department of Applied Chemistry and BiochemistryKumamoto University 2‐39‐1 Kurokami, Chuo‐ku, Kumamoto 860‐8555 Japan
| | - Naoki Kawamoto
- Department of Applied Chemistry and BiochemistryKumamoto University 2‐39‐1 Kurokami, Chuo‐ku, Kumamoto 860‐8555 Japan
| | - Nanami Hano
- Department of Applied Chemistry and BiochemistryKumamoto University 2‐39‐1 Kurokami, Chuo‐ku, Kumamoto 860‐8555 Japan
| | - Kazufusa Sasahara
- Department of Applied Chemistry and BiochemistryKumamoto University 2‐39‐1 Kurokami, Chuo‐ku, Kumamoto 860‐8555 Japan
| | - Shoji Nagaoka
- Materials Development DepartmentKumamoto Industrial Research Institute 3‐11‐38 Higashimachi, Higashi‐ku, Kumamoto 862‐0901 Japan
| | - Hirotaka Ihara
- Department of Applied Chemistry and BiochemistryKumamoto University 2‐39‐1 Kurokami, Chuo‐ku, Kumamoto 860‐8555 Japan
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Takafuji M, Kawahara T, Sultana N, Ryu N, Yoshida K, Kuwahara Y, Oda R, Ihara H. Extreme enhancement of secondary chirality through coordination-driven steric changes of terpyridyl ligand in glutamide-based molecular gels. RSC Adv 2020; 10:29627-29632. [PMID: 35518247 PMCID: PMC9056163 DOI: 10.1039/d0ra05057a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 08/03/2020] [Indexed: 01/01/2023] Open
Abstract
Aggregation-induced chirality is potentially useful in sensor technology applications. Herein we show extreme enhancement of secondary chirality through coordination-driven steric changes of terpyridyl ligand in molecular gels. The secondary chirality reflecting on enhancement of chiral signals (i.e., circular dichroism (CD) and circularly polarised luminescence (CPL)) of the molecular gels formed from glutamide-attached terpyridine (G-tpy) is extremely enhanced by the coordination of its terpyridyl groups to metal ions such as Cu2+, Zn2+ and Ru2+, which is due to dramatic changes in the stacked structure of the chromophore groups through the formation of metal ion complex. Metal-free terpyridine exists in a non-planar geometry, which suppress π–π stacking interactions among aggregates. The planarity of the terpyridyl group is improved through metal-ion complexation, which induces the metal-ion-coordinated terpyridyl groups to stack. The thermal stabilities of the CD signals are strongly affected by the metal-ion species. CPL signal is generated in the molecular gel formed from G-tpy–Zn2+ complex accompanied by chelation-enhanced fluorescence. It is expected that large and sensitive coordination-driven secondary chirality signals (CD and CPL) are useful for sensing guest molecules and the surrounding environment. Dramatic changes of secondary chirality reflecting on enhancement of chiral signals (i.e., CD and CPL) is induced through coordination-derived steric changes of terpyridyl ligand attached on glutamide-based molecular gels.![]()
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Affiliation(s)
- Makoto Takafuji
- Department of Applied Chemistry and Biochemistry
- Kumamoto University
- Kumamoto 860-8555
- Japan
| | - Tomoki Kawahara
- Department of Applied Chemistry and Biochemistry
- Kumamoto University
- Kumamoto 860-8555
- Japan
| | - Nahid Sultana
- Department of Applied Chemistry and Biochemistry
- Kumamoto University
- Kumamoto 860-8555
- Japan
| | - Naoya Ryu
- Materials Development Department
- Kumamoto Industrial Research Institute
- Kumamoto 862-0901
- Japan
| | - Kyohei Yoshida
- Institut de Chimie & Biologie des Membranes & des Nano-objets (UMR5248 CBMN)
- CNRS
- Université de Bordeaux
- Institut Polytechnique Bordeaux
- 33607 Pessac
| | - Yutaka Kuwahara
- Department of Applied Chemistry and Biochemistry
- Kumamoto University
- Kumamoto 860-8555
- Japan
| | - Reiko Oda
- Institut de Chimie & Biologie des Membranes & des Nano-objets (UMR5248 CBMN)
- CNRS
- Université de Bordeaux
- Institut Polytechnique Bordeaux
- 33607 Pessac
| | - Hirotaka Ihara
- Department of Applied Chemistry and Biochemistry
- Kumamoto University
- Kumamoto 860-8555
- Japan
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Ryu N, Kawaguchi T, Yanagita H, Okazaki Y, Buffeteau T, Yoshida K, Shirosaki T, Nagaoka S, Takafuji M, Ihara H, Oda R. Chirality induction on non-chiral dye-linked polysilsesquioxane in nanohelical structures. Chem Commun (Camb) 2020; 56:7241-7244. [DOI: 10.1039/d0cc02224a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Chirally arranged organic dye-linked polysilsesquioxane was prepared, through a sol–gel transcription using its non-chiral precursor with a chiral supramolecular template, and its chiroptical properties were investigated.
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29
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Pathan S, Noguchi H, Yamada N, Kuwahara Y, Takafuji M, Oda R, Ihara H. Fabrication of Fluorescent One-dimensional-nanocomposites through One-pot Self-assembling Polymerization on Nano-helical Silica. CHEM LETT 2019. [DOI: 10.1246/cl.190339] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Shaheen Pathan
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
- Institute of Chemistry and Biology of Membranes and Nano-object, UMR5248 (CBMN), CNRS – Université de Bordeaux – Bordeaux INP, 2 rue Robert Escarpit, Pessac 33607, France
| | - Hiroki Noguchi
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Nobuo Yamada
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Yutaka Kuwahara
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Makoto Takafuji
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Reiko Oda
- Institute of Chemistry and Biology of Membranes and Nano-object, UMR5248 (CBMN), CNRS – Université de Bordeaux – Bordeaux INP, 2 rue Robert Escarpit, Pessac 33607, France
| | - Hirotaka Ihara
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
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Yamada N, Noguchi H, Orimoto Y, Kuwahara Y, Takafuji M, Pathan S, Oda R, Mahammadali Rahimli A, Ahmed Ramazanov M, Ihara H. Emission-Color Control in Polymer Films by Memorized Fluorescence Solvatochromism in a New Class of Totally Organic Fluorescent Nanogel Particles. Chemistry 2019; 25:10141-10148. [PMID: 31095789 DOI: 10.1002/chem.201901239] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2019] [Revised: 05/06/2019] [Indexed: 01/18/2023]
Abstract
In this work, a new class of totally organic fluorescent nanogel particles and their exceptionally specific behaviors based on their unique structures are introduced, which draws a sharp line from conventional fluorophore-doped and fluorophore-branched-type particles. The nanogel particles, the diameter of which could be controlled by adjusting reaction conditions, such as the solvent system, were spontaneously fabricated with a spherical shape by direct polymerization of non-heterocyclic aromatic compounds, such as 2,6-dihydroxyanthracene, 2,6-dihydroxynaphthalene, and 9,9-bis(4-hydroxyphenyl)fluorene with triazinane as the cross-linker. A fluorophoric moiety formed from a polymer main chain was realized in the particle, and consequently, the resultant content of the fluorophoric moiety was around 70-80 wt % per particle. The uniqueness and versatility of the particles can be emphasized by their good compatibility with various solvents due to their amphiphilic and ampholytic swelling properties, but also by their remarkable fluorescent solvatochromism in the dispersion state. Furthermore, these behaviors were preserved even in their polymer composite system. This study also demonstrates that various fluorescent polymer films can be fabricated with emission color control due to memorization of the solvatochromism phenomenon of the dispersed fluorescent nanoparticles.
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Affiliation(s)
- Nobuo Yamada
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan
| | - Hiroki Noguchi
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan
| | - Yoshifumi Orimoto
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan
| | - Yutaka Kuwahara
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan
| | - Makoto Takafuji
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan
| | - Shaheen Pathan
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan.,Institute of Chemistry and Biology of Membranes and Nano-objects, (UMR5248 CBMN), CNRS-Université de Bordeaux-Bordeaux INP, 2 rue Robert Escarpit, Pessac, 33607, France
| | - Reiko Oda
- Institute of Chemistry and Biology of Membranes and Nano-objects, (UMR5248 CBMN), CNRS-Université de Bordeaux-Bordeaux INP, 2 rue Robert Escarpit, Pessac, 33607, France
| | | | | | - Hirotaka Ihara
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan
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31
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Mallik AK, Habib ML, Robel FN, Shahruzzaman M, Haque P, Rahman MM, Devanath V, Martin DJ, Nanjundan AK, Yamauchi Y, Takafuji M, Ihara H. Reduced Graphene Oxide (rGO) Prepared by Metal‐Induced Reduction of Graphite Oxide: Improved Conductive Behavior of a Poly(methyl methacrylate) (PMMA)/rGO Composite. ChemistrySelect 2019. [DOI: 10.1002/slct.201901281] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Abul K. Mallik
- Department of Applied Chemistry and Chemical EngineeringFaculty of Engineering and TechnologyUniversity of Dhaka Dhaka 1000 Bangladesh
| | - Md. Lawshan Habib
- Department of Applied Chemistry and Chemical EngineeringFaculty of EngineeringBangabandhu Sheikh Mujibur Rahman Science & Technology University Gopalganj-8100 Bangladesh
| | - Fataha N. Robel
- Department of Applied Chemistry and BiochemistryFaculty of EngineeringKumamoto University, 2–39-1 Kurokami Kumamoto 860–8555 Japan
- Department of Applied Chemistry and Chemical Engineering Noakhali Science and Technology University, Sonapur Noakhali- 3814 Bangladesh
| | - Md. Shahruzzaman
- Department of Applied Chemistry and Chemical EngineeringFaculty of Engineering and TechnologyUniversity of Dhaka Dhaka 1000 Bangladesh
| | - Papia Haque
- Department of Applied Chemistry and Chemical EngineeringFaculty of Engineering and TechnologyUniversity of Dhaka Dhaka 1000 Bangladesh
| | - Mohammed Mizanur Rahman
- Department of Applied Chemistry and Chemical EngineeringFaculty of Engineering and TechnologyUniversity of Dhaka Dhaka 1000 Bangladesh
| | - Vasudevan Devanath
- Electrodics and electrocatalysis divisionCSIR-Central Electrochemical Research Institute Karaikudi 630006 India
| | - Darren J. Martin
- School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology (AIBN)The University of Queensland, Brisbane, QLD 4072 Australia
| | - Ashok Kumar Nanjundan
- School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology (AIBN)The University of Queensland, Brisbane, QLD 4072 Australia
| | - Yusuke Yamauchi
- School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology (AIBN)The University of Queensland, Brisbane, QLD 4072 Australia
- International Center for Materials Nanoarchitectonics (WPI-MANA)National Institute for Materials Science (NIMS), 1–1 Namiki, Tsukuba Ibaraki 305–0044 Japan
| | - Makoto Takafuji
- Department of Applied Chemistry and BiochemistryFaculty of EngineeringKumamoto University, 2–39-1 Kurokami Kumamoto 860–8555 Japan
| | - Hirotaka Ihara
- Department of Applied Chemistry and BiochemistryFaculty of EngineeringKumamoto University, 2–39-1 Kurokami Kumamoto 860–8555 Japan
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Takafuji M, Kajiwara M, Hano N, Kuwahara Y, Ihara H. Preparation of High Refractive Index Composite Films Based on Titanium Oxide Nanoparticles Hybridized Hydrophilic Polymers. Nanomaterials (Basel) 2019; 9:E514. [PMID: 30986965 PMCID: PMC6523180 DOI: 10.3390/nano9040514] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 03/22/2019] [Accepted: 03/22/2019] [Indexed: 11/30/2022]
Abstract
Optical materials with high refractive index (n) have been rapidly improved because of urgent demands imposed by the development of advanced photonic and electronic devices such as solar cells, light emitting diodes (LED and Organic LED), optical lenses and filters, anti-reflection films, and optical adhesives. One successful method to obtain high refractive index materials is the blending of metal oxide nanoparticles such as TiO₂ and ZrO₂ with high n values of 2.1-2.7 into conventional polymers. However, these nanoparticles have a tendency to agglomerate by themselves in a conventional polymer matrix, due to the strong attractive forces between them. Therefore, there is a limitation in the blending amount of inorganic nanoparticles. In this paper, various hydrophilic polymers such as poly(N-hydroxyl acrylamide) (pHEAAm), poly(vinyl alcohol), poly(ethylene glycol), and poly(acrylic acid) were examined for preparation of high refractive index film based on titanium oxide nanoparticle (TiNP) dispersed polymer composite. The hydrogen bonding sites in these hydrophilic polymers would improve the dispersibility of inorganic nanoparticles in the polymer matrix. As a result, pHEAAm exhibited higher compatibility with titanium oxide nanoparticles (TiNPs) than other water-soluble polymers. Transparent hybrid films were prepared by mixing pHEAAm with TiNPs and drop casting the mixture onto a glass plate. The refractive indices of the films were in good agreement with calculated values. The compatibility of TiNPs with pHEAAm was dependent on the surface characteristics of TiNPs. TiNPs with the highest observed compatibility could be hybridized with pHEAAm at concentrations of up to 90 wt%, and the refractive index of the corresponding film reached 1.90. The high compatibility of TiNPs with pHEAAm may be related to the hydrophilicity and amide and hydroxyl moieties of pHEAAm, which cause hydrogen bond formation on the TiO₂ surface. The obtained thin film was slightly yellow due to the color of the original TiNP dispersion; however, the transmittance of the film was higher than 80% in the wavelength range from 480 to 900 nm.
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Affiliation(s)
- Makoto Takafuji
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan.
- Kumamoto Institute for Photo-Electro Organics (PHOENICS), 3-11-38 Higashimachi, Higashi-ku, Kumamoto 862-0901, Japan.
| | - Maino Kajiwara
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan.
| | - Nanami Hano
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan.
| | - Yutaka Kuwahara
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan.
| | - Hirotaka Ihara
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan.
- Kumamoto Institute for Photo-Electro Organics (PHOENICS), 3-11-38 Higashimachi, Higashi-ku, Kumamoto 862-0901, Japan.
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33
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Mallik AK, Guragain S, Rahman MM, Takafuji M, Ihara H. L-Lysine-derived highly selective stationary phases for hydrophilic interaction chromatography: Effect of chain length on selectivity, efficiency, resolution, and asymmetry. Sep Sci plus 2019. [DOI: 10.1002/sscp.201800148] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Abul K. Mallik
- Department of Applied Chemistry and Chemical Engineering; Faculty of Engineering and Technology; University of Dhaka; Dhaka Bangladesh
| | - Sudhina Guragain
- Department of Applied Chemistry and Biochemistry; Faculty of Engineering; Kumamoto University; Japan (currently at Department of Earth and Planetary Science; Harvard University; Cambridge Massachusetts USA
| | - Mohammed Mizanur Rahman
- Department of Applied Chemistry and Chemical Engineering; Faculty of Engineering and Technology; University of Dhaka; Dhaka Bangladesh
| | - Makoto Takafuji
- Department of Applied Chemistry and Biochemistry; Faculty of Engineering; Kumamoto University; Japan (currently at Department of Earth and Planetary Science; Harvard University; Cambridge Massachusetts USA
- Kumamoto Institute for Photo-Electro Organics (Phoenics); Japan
| | - Hirotaka Ihara
- Department of Applied Chemistry and Biochemistry; Faculty of Engineering; Kumamoto University; Japan (currently at Department of Earth and Planetary Science; Harvard University; Cambridge Massachusetts USA
- Kumamoto Institute for Photo-Electro Organics (Phoenics); Japan
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34
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Khan MN, Orimoto Y, Ihara H. Amphiphilic spherical nanoparticles with a nitrogen-enriched carbon-like surface by using β-lactoglobulin as a template. Chem Commun (Camb) 2018; 54:13204-13207. [PMID: 30328421 DOI: 10.1039/c8cc07532h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
We demonstrate a versatile and facile method for fabrication of a new class of amphiphilic spherical nanoparticles having a nitrogen-enriched carbonised surface and precisely-controlled morphology. They are prepared by one-pot polymerization with β-lactoglobulin aggregates as a template with tunable size (70-750 nm) and mild heat-treatment to extend the π-conjugated structures.
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Affiliation(s)
- M Nuruzzaman Khan
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan.
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35
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Mallik AK, Qiu H, Takafuji M, Ihara H. High molecular-shape-selective stationary phases for reversed-phase liquid chromatography: A review. Trends Analyt Chem 2018. [DOI: 10.1016/j.trac.2018.09.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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36
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Oishi H, Yoshida K, Kuwahara Y, Takafuji M, Oda R, Ihara H. Generation of strong circularly polarized luminescence induced by chiral organogel based on L-glutamide. J Taiwan Inst Chem Eng 2018. [DOI: 10.1016/j.jtice.2018.03.026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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37
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Takafuji M, Shahruzzaman M, Sasahara K, Ihara H. Preparation and characterization of a novel hydrophilic interaction/ion exchange mixed-mode chromatographic stationary phase with pyridinium-based zwitterionic polymer-grafted porous silica. J Sep Sci 2018; 41:3957-3965. [DOI: 10.1002/jssc.201800578] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 08/15/2018] [Accepted: 08/17/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Makoto Takafuji
- Department of Applied Chemistry and Biochemistry; Kumamoto University; Kumamoto Japan
- Kumamoto Institute for Photo-Electro Organics; Kumamoto Japan
| | - Mohammad Shahruzzaman
- Department of Applied Chemistry and Biochemistry; Kumamoto University; Kumamoto Japan
- Department of Applied Chemistry and Chemical Engineering; University of Dhaka; Dhaka Bangladesh
| | - Kazufusa Sasahara
- Department of Applied Chemistry and Biochemistry; Kumamoto University; Kumamoto Japan
| | - Hirotaka Ihara
- Kumamoto Institute for Photo-Electro Organics; Kumamoto Japan
- Department of New Frontier Science; Kumamoto University; Kumamoto Japan
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38
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Mallik AK, Noguchi H, Rahman MM, Takafuji M, Ihara H. Facile preparation of an alternating copolymer-based high molecular shape-selective organic phase for reversed-phase liquid chromatography. J Chromatogr A 2018; 1555:53-61. [DOI: 10.1016/j.chroma.2018.04.047] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Revised: 04/16/2018] [Accepted: 04/22/2018] [Indexed: 11/16/2022]
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39
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Imafuku S, Ihara H, Yamaguchi K. 905 Anti-VZV-IgM antibody is more frequently induced in herpes zoster patients with systemic dissemination. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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40
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Katayama N, Watanabe K, Takamoto A, Oiwa Y, Okawa H, Ihara H, Katsui K, Takemoto M, Nasu Y, Kanazawa S. EP-1546: Outcomes of monotherapeutic permanent brachytherapy for apanese localized prostate cancer. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)31855-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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41
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Nathan E, Vijayashree K, Harikrishna A, Takafuji M, Jintoku H, Ihara H, Rao NM. A novel photosensitizer: An l-glutamide lipid conjugate with improved properties for photodynamic therapy. Photochem Photobiol Sci 2018; 15:1476-1483. [PMID: 27874144 DOI: 10.1039/c6pp00304d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photosensitizers (PS) are used in photodynamic therapy to treat several cancers. The efficacy of photodynamic therapy (PDT) could be further improved by overcoming aggregation-dependent quenching of PS and by improving the biodistribution of the PS. In this work we attempted to overcome these issues by conjugating a PS with a lipid molecule and tested the liposomes prepared with this PS conjugated lipid for PDT. A novel lipid-porphyrin conjugate (1 : 1) was synthesized by attaching a PS, 5-(4-methoxycarbonylphenyl)-10,15,20-triphenyl-21H,23H-porphine, to the head group of a glutamide lipid. Two liposomal preparations, with egg phosphatidylcholine as the bulk lipid, were prepared viz. liposomes with PS conjugated lipid (LPSL) and PS entrapped in liposomes (PSL). At equimolar concentrations of the PS, both liposomal preparations were found to generate comparable amounts of reactive oxygen species as free PS upon light exposure. Electron micrographs and dynamic light scattering measurements indicated uniform and circular liposomes of 150 nm in size and near neutral zeta potential. Uptake of these liposomes by the human ovarian carcinoma cell line, SK-OV-3, was shown by FACS and confocal microscopy. Upon light exposure, the LPSL, i.e., with the conjugate lipid, have shown a substantial decrease (>4 times) in the PS requirement compared to PSL or free PS in its ability to cause light mediated cell death of SK-OV-3 cells. The light mediate cell death by LPSL was shown to be not dependent on the bulk properties of the lipid. Our data suggest a potential benefit of conjugating PS with a lipid in improving the efficiency of PDT.
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Affiliation(s)
- Erica Nathan
- CSIR-Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad, 500007 India.
| | - K Vijayashree
- CSIR-Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad, 500007 India.
| | - A Harikrishna
- CSIR-Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad, 500007 India.
| | - Makoto Takafuji
- Kumamoto University, Dept. Applied Chemistry and Biochemistry, Graduate School of Science & Technology, 2-39-1 Kurokami, Kumamoto 860-8555, Japan.
| | - Hirokuni Jintoku
- Kumamoto University, Dept. Applied Chemistry and Biochemistry, Graduate School of Science & Technology, 2-39-1 Kurokami, Kumamoto 860-8555, Japan.
| | - Hirotaka Ihara
- Kumamoto University, Dept. Applied Chemistry and Biochemistry, Graduate School of Science & Technology, 2-39-1 Kurokami, Kumamoto 860-8555, Japan.
| | - N M Rao
- CSIR-Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad, 500007 India.
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42
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Yoshida K, Kuwahara Y, Miyamoto K, Nakashima S, Jintoku H, Takafuji M, Ihara H. A room-temperature phosphorescent polymer film containing a molecular web based on one-dimensional chiral stacking of a simple luminophore. Chem Commun (Camb) 2018; 53:5044-5047. [PMID: 28428991 DOI: 10.1039/c7cc00395a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We propose a new approach for a totally organic, room-temperature phosphorescent system with a lifetime on the order of milliseconds, which is achieved by promotion of the one-dimensional chiral stacking of a simple, small fluorophore in a solution state. The versatility of this system is highlighted by its good applicability to the fabrication of a phosphorescent polymer film. This paper demonstrates the first example of a room-temperature phosphorescent polymer film prepared with our methodology.
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Affiliation(s)
- Kyohei Yoshida
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan.
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Okazaki Y, Ryu N, Buffeteau T, Pathan S, Nagaoka S, Pouget E, Nlate S, Ihara H, Oda R. Induced circular dichroism of monoatomic anions: silica-assisted the transfer of chiral environment from molecular assembled nanohelices to halide ions. Chem Commun (Camb) 2018; 54:10244-10247. [DOI: 10.1039/c8cc05449e] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Induced CD of monoatomic anions was detected using silica-coated molecular assembled nanohelices and multi-step chirality induction was achieved through an in situ chemical reaction via chiralized monoatomic anions.
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Affiliation(s)
- Yutaka Okazaki
- Institute of Chemistry & Biology of Membranes & Nanoobjects (UMR5248 CBMN)
- CNRS – Université de Bordeaux – Bordeaux INP
- 33607 Pessac
- France
| | - Naoya Ryu
- Materials Development Department
- Kumamoto Industrial Research Institute
- Kumamoto 862-0901
- Japan
| | - Thierry Buffeteau
- Institut des Sciences Moléculaires (UMR5255 ISM)
- CNRS – Université de Bordeaux
- 33405 Talence
- France
| | - Shaheen Pathan
- Institute of Chemistry & Biology of Membranes & Nanoobjects (UMR5248 CBMN)
- CNRS – Université de Bordeaux – Bordeaux INP
- 33607 Pessac
- France
- Department of Applied Chemistry and Biochemistry
| | - Shoji Nagaoka
- Materials Development Department
- Kumamoto Industrial Research Institute
- Kumamoto 862-0901
- Japan
- Kumamoto Institute for Photo-Electro Organics (PHOENICS)
| | - Emilie Pouget
- Institute of Chemistry & Biology of Membranes & Nanoobjects (UMR5248 CBMN)
- CNRS – Université de Bordeaux – Bordeaux INP
- 33607 Pessac
- France
| | - Sylvain Nlate
- Institute of Chemistry & Biology of Membranes & Nanoobjects (UMR5248 CBMN)
- CNRS – Université de Bordeaux – Bordeaux INP
- 33607 Pessac
- France
| | - Hirotaka Ihara
- Department of Applied Chemistry and Biochemistry
- Kumamoto University
- Kumamoto 860-8555
- Japan
- Kumamoto Institute for Photo-Electro Organics (PHOENICS)
| | - Reiko Oda
- Institute of Chemistry & Biology of Membranes & Nanoobjects (UMR5248 CBMN)
- CNRS – Université de Bordeaux – Bordeaux INP
- 33607 Pessac
- France
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Abstract
Stimuli-responsive materials can convert between molecular scale and macroscopic scale phenomena. Two macroscopic static electricity-responsive phenomena based on nanoscale supramolecular assemblies of a zinc porphyrin derivative are presented. One example involves the movement of supramolecular assemblies in response to static electricity. The assembly of a pyridine (Py) complex of the above-mentioned derivative in cyclohexane is drawn to a positively charged material, whereas the assembly of a 3,5-dimethylpyridine complex is drawn to a negatively charged material. The second phenomenon involves the movement of a non-polar solvent in response to static electrical stimulation. A cyclohexane solution containing a small quantity of the Py-complexed assembly exhibited a strong movement response towards negatively charged materials. Based on spectroscopic measurements and electron microscope observations, it was revealed that the assembled formation generates the observed response to static electricity.
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Affiliation(s)
- Hirokuni Jintoku
- Research Institute for Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology, Central 5-2, 1-1-1 Higashi, Tsukuba, 305-8565, Japan
| | - Hirotaka Ihara
- Department of Applied Chemistry & Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Yoko Matsuzawa
- Research Institute for Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology, Central 5-2, 1-1-1 Higashi, Tsukuba, 305-8565, Japan
| | - Hideyuki Kihara
- Research Institute for Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology, Central 5-2, 1-1-1 Higashi, Tsukuba, 305-8565, Japan
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45
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Hidayat M, Takahashi F, Tajima K, Nurwidya F, Wirawan A, Kanemaru R, Koinuma Y, Ihara H, Tajima M, Matsumoto N, Kanamori K, Takeda I, Haraguchi M, Hayakawa D, Ko R, Kato M, Shibayama R, Koyama R, Takahashi M, Shimada N, Takahashi K. P3.02-024 Role of FBXW7 in the Maintenance of Quiescent Cancer Stem Cells Resistant to Gefitinib in EGFR Mutation-Positive Non-Small Cell Lung Cancer. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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46
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Takafuji M, Hano N, Alam MA, Ihara H. Fabrication of Hollow Silica Microspheres with Orderly Hemispherical Protrusions and Capability for Heat-Induced Controlled Cracking. Langmuir 2017; 33:10679-10689. [PMID: 28914544 DOI: 10.1021/acs.langmuir.7b02223] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Hollow silica microspheres with orderly protrusions on their outer and inner surfaces were fabricated in three simple steps: (1) suspension polymerization of a polymerizable monomer containing silica nanoparticles to obtain polymeric microspheres with a layered shell of silica particles; (2) sol-gel reaction of tetraethoxysilane (TEOS) on the surface of the microspheres to connect the silica nanoparticles; (3) removal of polymer core by calcination. The shell composed of silica-connected silica nanoparticles remained spherical even after calcination, and the characteristic surface morphology with protrusions were obtained on both inner and outer surfaces. Measurements of the mechanical strength revealed that the compression modulus of the hollow microspheres increased with increasing thickness of the silica layer, which could be controlled by changing the concentration of TEOS in the sol-gel reaction. Rapid heating of the hollow silica microspheres with the thin silica-connected layer led to silica shell cracking, and the cracks were mostly observed in the connecting layer between the silica nanoparticles. The stress was probably concentrated in the connecting layer because of its lower thickness than the nanoparticles. Such characteristic of the hollow microspheres is useful for a capsule with capability for heat-induced controlled cracking caused by internal pressure changes.
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Affiliation(s)
- Makoto Takafuji
- Department of Applied Chemistry and Biochemistry, Kumamoto University , 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
- Kumamoto Institute for Photo-electro Organics (PHOENICS) , 3-11-38 Higashimachi, Higashi-ku Kumamoto 862-0901, Japan
| | - Nanami Hano
- Department of Applied Chemistry and Biochemistry, Kumamoto University , 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Md A Alam
- Department of Applied Chemistry and Biochemistry, Kumamoto University , 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
- Department of Applied Chemistry and Chemical Engineering, Noakhali Science and Technology University , Sonapur, Noakhali-3814, Bangladesh
| | - Hirotaka Ihara
- Kumamoto Institute for Photo-electro Organics (PHOENICS) , 3-11-38 Higashimachi, Higashi-ku Kumamoto 862-0901, Japan
- Department of New Frontier Science, Kumamoto University , 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
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47
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Affiliation(s)
- Fataha Nur Robel
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555
- Department of Applied Chemistry and Chemical Engineering, Noakhali Science and Technology University, Sonapur, Noakhali-3814, Bangladesh
| | - Makoto Takafuji
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555
- Kumamoto Institute for Photo-Electro Organics (PHOENICS), 3-11-38 Higashimachi, Higashi-ku, Kumamoto 862-0901
| | - Hirotaka Ihara
- Department of New Frontier Science, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555
- Kumamoto Institute for Photo-Electro Organics (PHOENICS), 3-11-38 Higashimachi, Higashi-ku, Kumamoto 862-0901
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48
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Takafuji M, Hano N, Yamamoto H, Ryu N, Horikawa M, Nagaoka S, Ihara H. One-pot green process for surface layering with nanodiamonds on polymer microspheres. J Supercrit Fluids 2017. [DOI: 10.1016/j.supflu.2017.02.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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49
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Noguchi H, Liu T, Nozato S, Kuwahara Y, Takafuji M, Nagaoka S, Ihara H. Novel Black Organic Phase for Ultra Selective Retention by Surface Modification of Porous Silica. CHEM LETT 2017. [DOI: 10.1246/cl.170449] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Hiroki Noguchi
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555
| | - Tianhang Liu
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555
| | - Shoji Nozato
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555
| | - Yutaka Kuwahara
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555
| | - Makoto Takafuji
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555
- Kumamoto Institute for Photo-Electro Organics (PHOENICS), 3-11-38 Higashimachi, Higashi-ku, Kumamoto 862-0901
| | - Shoji Nagaoka
- Kumamoto Institute for Photo-Electro Organics (PHOENICS), 3-11-38 Higashimachi, Higashi-ku, Kumamoto 862-0901
- Materials and Regional Resources Laboratory, Kumamoto Industrial Research Institute, 3-11-38 Higashimachi, Higashi-ku, Kumamoto 862-0901
| | - Hirotaka Ihara
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555
- Kumamoto Institute for Photo-Electro Organics (PHOENICS), 3-11-38 Higashimachi, Higashi-ku, Kumamoto 862-0901
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50
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Liu H, Li Z, Takafuji M, Ihara H, Qiu H. Octadecylimidazolium ionic liquid-modified magnetic materials: Preparation, adsorption evaluation and their excellent application for honey and cinnamon. Food Chem 2017; 229:208-214. [DOI: 10.1016/j.foodchem.2017.02.080] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 09/30/2016] [Accepted: 02/16/2017] [Indexed: 10/20/2022]
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