Article
Chemistry, Multidisciplinary
Xiao Wang, Ruojie Sha, William B. Knowlton, Nadrian C. Seeman, James W. Canary, Bernard Yurke
Summary: A chiral dimer of an organic semiconductor was created by assembling an octamer of polyaniline with DNA. The dimer showed easy reconfiguration between its monomeric and dimeric forms. Experimental and theoretical studies were conducted to examine the dimer's geometry and the exciton coupling between its molecules. Protonic doping allowed for easy switching between different electronic states, and the dimer exhibited a Davydov splitting similar to DNA-dye systems with strong transition dipoles. This research provides a possible platform for studying the fundamental properties of organic semiconductors with DNAtemplated assemblies, which have potential applications in artificial light-harvesting systems and excitonic devices.
Article
Chemistry, Inorganic & Nuclear
Guanghui Tian, Chuanbin Fan, Ziao Zong, Junli Wang, Feng Guo
Summary: In this study, a pair of chiral coordination compounds were synthesized and self-assembled into a 3D hydrogen-bonded framework with multiple chirality. The multi-level chirality structure showed enhanced circular dichroism response and obvious circular polarization luminescence (CPL) compared to the organic ligands and Cd[OH-bim](2)(NO3)(2) unit.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Jin-Tai Lin, Deng-Gao Chen, Lan-Sheng Yang, Tai-Chun Lin, Yi-Hung Liu, Yu-Chiang Chao, Pi-Tai Chou, Ching-Wen Chiu
Summary: This study investigates the effects of various halogen-substituted chiral organic cations on the chiroptical properties of hybrid organic-inorganic perovskites (HOIPs). It was found that the HOIP with a chlorine-substituted chiral cation exhibits the highest circular dichroism (CD) and circular polarized luminescence (CPL) intensities, which can be correlated to the modulation of magnetic transition dipole and halogen-halogen interaction between organic cations and inorganic sheets.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Materials Science, Multidisciplinary
Patrick T. Probst, Yue Dong, Ziwei Zhou, Olha Aftenieva, Andreas Fery
Summary: Chiral artificial nanosystems constructed from inorganic nanoparticles have revolutionized various fields due to their strong light-matter interaction and precisely engineered properties. Bottom-up approaches show great potential for the inexpensive production of plasmonic, excitonic, and upconversion chiral materials.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Optics
Yating Bai, Haiyan Zheng, Qiang Zhang, Shao-ding Liu
Summary: This study demonstrates that by enlarging the lattice spacing, the oscillator strength of metallic nanoparticles can be enhanced, leading to narrower pairs of perfect absorption. The coupling and mode hybridization with the surface lattice resonance result in improved quality factors and near-field enhancements compared to localized plasmon resonances.
Article
Chemistry, Organic
Kenta Suzuki, Hiroki Fukuda, Hayato Toda, Yoshitane Imai, Yuki Nojima, Masashi Hasegawa, Eiji Tsurumaki, Shinji Toyota
Summary: In order to investigate the effects of substituents on the helically fused anthracene system, bulky phenyl groups were introduced at sterically crowded positions. Three derivatives were synthesized and analyzed. The results showed that the helical structures expanded in the order of steric size of the substituents. The substituent effects on the optical and chiroptical properties were relatively small.
Review
Chemistry, Multidisciplinary
Federico Begato, Giulia Licini, Cristiano Zonta
Summary: Spatial organization using confinement has been extensively studied in the field of supramolecular chemistry, with applications in sensing, catalysis, and delivery continuously emerging. This minireview focuses on the applications of chiral supramolecular cages (CSC) in catalysis, sensing, and chiroptical properties. The review discusses the preparation strategies for chiral supramolecular cages, including both purely organic architectures and those prepared using metal-ligand coordination bonds. Recent findings on the applications of CSC, particularly in stereodynamic systems, are presented to highlight the current scientific interests and future opportunities.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Joy Ann Panis, Marine Louis, Arnaud Brosseau, Shouhei Katao, Florencio de los Reyes, Takuya Nakashima, Remi Metivier, Clemence Allain, Tsuyoshi Kawai
Summary: In this study, we synthesized two different bichromophoric difluoroboron-beta-diketonate compounds with different connectivity using cyclohexane diamine as a chiral bridge. TD-DFT calculations and experiments revealed that the connectivity variation affects the spatial arrangement and chirality inversion of the compounds. The compound with para connectivity showed higher absorption values, and ultrasonication and heating induced the formation of highly ordered nano-helical wires, leading to increased emission values.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Physical
Nobuyuki Hara, Maho Kitahara, Takaharu Sugimura, Hayato Toda, Motohiro Shizuma, Akari Ito, Makoto Miyasaka, Michiya Fujiki, Yoshitane Imai
Summary: The study demonstrates that diamagnetic achiral pyrene and phenanthrene derivatives substituted with various groups exhibit clear magnetic circularly polarised luminescence (MCPL) spectra under an external magnetic field, and their MCPL signs are susceptible to the application of different Faraday geometries.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
David Reger, Philipp Haines, Konstantin Y. Amsharov, Julia A. Schmidt, Tobias Ullrich, Simon Boenisch, Frank Hampel, Andreas Goerling, Jenny Nelson, Kim E. Jelfs, Dirk M. Guldi, Norbert Jux
Summary: A straightforward synthetic route was designed to create a family of pi-extended helicenes called superhelicenes. By altering the 5-membered ring, a versatile library of molecular building blocks was realized, allowing for easy tuning of both structure and features. Physico-chemical characterizations confirmed the concept, showing potential for outstanding hole transporting properties in charge-carrier mobilities.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Hong-Li Xuan, Yu-Feng Sang, Liang-Jin Xu, Da-Sheng Zheng, Cui-Mi Shi, Zhong-Ning Chen
Summary: This study successfully prepared CPL-active hybrids with strong red emission and remarkable circular dichroism (CD) signals and CPL activity. The hybrids have a one-dimensional structure with linear chains formed by MnCl6 and prolinate cations.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Lu Zhang, Kun Gao, Fanfan Lu, Lei Xu, Mohsen Rahmani, Lixun Sun, Feng Gao, Wending Zhang, Ting Mei
Summary: In this study, we successfully fabricated adjustable visible-band enantiomeric CMDs using a phase-change material Sb2S3, which allows for the adjustment of chirality, spectrum, and polarization. This new type of meta-devices may potentially enable a wide range of chirality nanophotonic applications including highly sensitive sensing and surface-enhanced nanospectroscopy.
Article
Physics, Applied
Seyed M. Sadeghi, Dustin T. Roberts, Harrison Knox, Rithvik R. Gutha
Summary: Variations in viewing angle of a metallic U-shaped nanoantenna can lead to different size and shape projections. Plasmonic metasurfaces consisting of arrays of such nanoantennas show unique side scattering switching and routing processes, including polarization switching centered at 1.6 μm and spectrally broadband directional control of in-plane light scattering. The results also highlight the impact of surface lattice resonance on infrared scattering and its switching process.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Yuan Li, Xiaojie Ma, Xiaojun Xu, Yuqing Ye, Bo Wang
Summary: In this study, an achiral emissive Eu MOF was reported, and its chiroptical properties in the ground and excited states were investigated. The framework crystallized in an achiral space group, where the asymmetric arrangement of racemic trinuclear Eu-oxo clusters was responsible for the optical activity. A pair of circular dichroisms and circularly polarized luminescence with opposite signs were observed for single crystals. The luminescence dissymmetry factor reached a magnitude comparable to that of most chiral-linker-bridged MOFs. This work presents the first example of achiral MOFs with CPL response and has implications for the discovery of more CPL emitters from racemic MOF family.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Jiaqi Chen, Xinshuang Gao, Qiang Zheng, Jianbo Liu, Dejing Meng, Haiyun Li, Rui Cai, Huizhen Fan, Yinglu Ji, Xiaochun Wu
Summary: This study introduces a chemical strategy for synthesizing intrinsically helical plasmonic nanorods with strong and tailorable plasmonic circular dichroism responses, analyzing the influence of structural parameters on the responses. The depth of the pitch was found to have the greatest impact on the response, and these nanorods were found to induce circularly polarized luminescence of achiral luminophores. The chiral plasmonic nanostructure produced in this study has potential applications in chiral sensors, catalysis, and displays.
Article
Chemistry, Physical
Guofa Cai, Jingwei Chen, Jiaqing Xiong, Alice Lee-Sie Eh, Jiangxin Wang, Masayoshi Higuchi, Pooi See Lee
ACS ENERGY LETTERS
(2020)
Article
Chemistry, Multidisciplinary
Manas Kumar Bera, Yoshikazu Ninomiya, Masayoshi Higuchi
Summary: The stepwise introduction of three different transition metals into a metallo-supramolecular polymer has successfully led to the synthesis of a polymer with quad-color electrochromic properties. This synthetic method can be extended to fabricate other MSPs with different compositions, exhibiting a broad optical and electrochemical window.
COMMUNICATIONS CHEMISTRY
(2021)
Article
Nanoscience & Nanotechnology
Dines Chandra Santra, Sanjoy Mondal, Takefumi Yoshida, Yoshikazu Ninomiya, Masayoshi Higuchi
Summary: Metallo-supramolecular polymers (MSPs) composed of a metal ion and ditopic ligand have been developed for electrochromic display applications, with polyRu-LBip showing promising properties of low redox potential, reversible color changes, and high durability. The controlled design of the ligand, tetrakis(N-methylbenzimidazolyl)bipyridine (L-Bip), has significantly improved the optical contrast, response time, and coloration efficiency of the solid-state EC device, indicating great potential for practical applications.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Polymer Science
Kazuko Fujii, Manas Kumar Bera, Dines Chandra Santra, Masayoshi Higuchi
Summary: By forming nanocomposites of polyFe and LIIm, the electrochromic properties can be improved and the memory properties can be enhanced without reducing the contrast in transmittance. The composites exhibit redox waves in the cyclic voltammograms and are estimated to be diffusion controlled.
Article
Chemistry, Physical
Zi-Jie Gong, Yemineni S. L. Narayana, Yen-Chun Lin, Wei-Hsiang Huang, Wei-Nien Su, Yi-Pei Li, Masayoshi Higuchi, Wen-Yueh Yu
Summary: In this study, ruthenium-based metallo-supramolecular polymers (Ru-MSPs) were synthesized and used for heterogeneously catalytic transfer hydrogenation of carbonyl compounds. The polymerization process was controlled by adjusting the ligand/metal ratio and synthesis conditions. The coordinatively unsaturated ruthenium atoms were identified as the active sites for carbonyl reduction, and the Ru-MSPs exhibited enhanced activity and reusability compared to monomeric counterparts.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Materials Science, Multidisciplinary
Kazuko Fujii, Dines Chandra Santra, Manas Kumar Bera, Takatsugu Wakahara, Ritsuko Nagahata, Masayoshi Higuchi
Summary: In this study, the electrochromic (EC) properties of metallo-supramolecular polymers (MSPs) were improved by forming nanocomposites with a layered inorganic-imidazoline covalently bonded hybrid (LIIm). The nanocomposites exhibited improved mechanical, optical, and gas barrier properties. The findings suggest that nanocomposite thin films can achieve reversible electrochromic behavior.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Jian Zhang, Satya Ranjan Jena, Masayoshi Higuchi
Summary: This study presents an electrical color printing approach using electrochromic metallosupramolecular polymers to achieve rewritable image printing. The printed information has a long retention time, high stability, and can be naturally erased under humid conditions.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Polymer Science
Masayoshi Higuchi, Yukio Fujii
Summary: This study successfully developed a designed and flexible electrochromic display device with memory property, which can be used as energy-saving smart windows or digital signages. The display changes were controlled by the etching pattern using mechanical etching technique.
JOURNAL OF PHOTOPOLYMER SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Masayoshi Higuchi, Yukio Fujii, Yoji Hisamatsu
Summary: Metallo-supramolecular polymers (MSPs) are a novel type of electrochromic (EC) materials that show reversible color changes between orange and pale green. The color changes are caused by metal-to-ligand charge transfer (MLCT) absorption. Insulating films can enhance the display effect on EC devices.
ITE TRANSACTIONS ON MEDIA TECHNOLOGY AND APPLICATIONS
(2021)
Article
Engineering, Electrical & Electronic
Hsin-Che Lu, Li-Yin Hsiao, Sheng-Yuan Kao, Yuki Seino, Dines Chandra Santra, Kuo-Chuan Ho, Masayoshi Higuchi
Summary: Durable electrochromic devices driven at 0.8 V were successfully fabricated using the complementary chromic combination of Fe(II)-based metallo-supramolecular polymer (polyFe) and Prussian blue analogues (PBAs). By utilizing polyFe and NiHCF as the EC pair, a dramatic decrease in driving voltage was achieved, with S-ECD showing better durability in long term stability tests.
ACS APPLIED ELECTRONIC MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
Yemineni S. L. Narayana, Sanjoy Mondal, Utpal Rana, Yoshikazu Ninomiya, Dines Chandra Santra, Takefumi Yoshida, Masayoshi Higuchi
Summary: The three-dimensionally hyperbranched Fe(II)-based metallo-supramolecular polymer (polyFe3-D) was synthesized in one step for development of durable electrochromic materials, showing wide absorption, large optical contrast, and high coloration efficiency. The polyFe3-D exhibited reversible redox reactions in cyclic voltammetry and covered a wide visible region with MLCT absorptions, demonstrating high quality and stability.
ACS APPLIED ELECTRONIC MATERIALS
(2021)
Article
Biochemistry & Molecular Biology
Manas Kumar Bera, Yoshikazu Ninomiya, Masayoshi Higuchi
Article
Energy & Fuels
Shiuan-Ying Peng, Chun-Hao Su, Masayoshi Higuchi, Kuo-Chuan Ho, Ying-Chih Liao
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2020)
Article
Materials Science, Multidisciplinary
Chanchal Chakraborty, Utpal Rana, Satoshi Moriyama, Masayoshi Higuchi
ACS APPLIED POLYMER MATERIALS
(2020)
Article
Chemistry, Multidisciplinary
Takefumi Yoshida, Manas Kumar Bera, Yemineni S. L. Narayana, Sanjoy Mondal, Hitoshi Abe, Masayoshi Higuchi