Article
Polymer Science
Hiroyuki Kubota, Makoto Ouchi
Summary: Alternating cyclocopolymers with a condensed ring structure were successfully synthesized via radical copolymerization, and the one-pot synthesis of multiblock alternating cyclocopolymers with different pendant groups was achieved through sequential addition of N-substituted maleimides. These cyclocopolymers exhibited high thermal stabilities and glass transition temperatures.
Review
Chemistry, Multidisciplinary
Tien-Yau Luh, Chih-Hsien Chen, Guo-Qiao Lai
Summary: The study investigates copolymers containing alt-silylene-conjugated motif, with different chromophores arranged in a specific way and linked by silylene connections. These polymers exhibit complex interactions in photophysical properties, including the observation of the Marcus inverted region.
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN
(2021)
Article
Polymer Science
Marcus Mueller
Summary: This study investigates the structure and dynamics of loops and bridges in the lamellar phase of symmetric ABA triblock copolymers, revealing a linear correlation between bridge fraction and the average variance of the first Rouse mode. The system is proposed to be a mixture of noninteracting loops and bridges with a two-state Markov dynamics. Multichain simulations show an extremely long relaxation time, which can be accelerated using the heterogeneous multiscale method.
Article
Chemistry, Multidisciplinary
Kuo-Hsiu Huang, Huai-Hsuan Liu, Kuang-Yi Cheng, Chia-Lin Tsai, Yen-Ju Cheng
Summary: In this study, a new class of alternating block conjugated copolymers was developed, consisting of two alternating copolymers. Three sequence-controlled polychalcogenophenes were prepared by adding two different Grignard monomers in sequence, and their molecular weight, dispersity, and main-chain sequence can be synthetically controlled. The optical and electrochemical properties of the polymers can be systematically tuned, and they can be applied for bromine detection.
Article
Materials Science, Multidisciplinary
Nengni Xu, Wenhua Xu, Meng Sun, Yi Yuan, Xinjun Luan, Ying Wang, Hui Wang
Summary: A novel multi-stimuli responsive luminescent material TXENE with integrated polymorphism, aggregation-induced emission, mechanoluminescence, thermoresponsive luminescence, and triboluminescent properties has been reported. The luminescent properties can be tuned by regulating its aggregation state. Possible applications of TXENE are demonstrated in information anti-counterfeiting and thermal sensing.
MATERIALS ADVANCES
(2023)
Article
Polymer Science
Anna Grobelny, Karolina Lorenc, Lucja Skowron, Szczepan Zapotoczny
Summary: This study presents a new method for synthesizing ladder-like donor-acceptor polymer brushes, achieving proper arrangement of pendant donor and acceptor groups through alternating copolymerization. Dense brushes can be obtained in a single polymerization process without the use of toxic metal catalysts or bulky substituents.
Article
Chemistry, Multidisciplinary
Hwangseok Kim, Jaeho Lee, Taehyun Kim, Minyoung Cho, Tae-Lim Choi
Summary: In this study, the authors demonstrate the versatile application of living Suzuki-Miyaura catalyst-transfer polymerization (SCTP) using a RuPhos Pd G3 precatalyst for the precise synthesis of various donor-acceptor alternating conjugated polymers (DA ACPs). The method allows for the controlled synthesis of DA ACPs with controlled molecular weight, narrow dispersity, and high yield. The authors also successfully synthesized block copolymers and demonstrated the tunable optical and electronic properties of the resulting polymers.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Review
Chemistry, Multidisciplinary
Yohei Yamamoto, Hiroshi Yamagishi, Jer-Shing Huang, Axel Lorke
Summary: This article reviews the recent progress on the precise control of microstructures from pi-conjugated organic molecules and polymers, which are suitable for optical applications. The article introduces the supramolecular methodology for assembling molecules and supramolecules to form microstructures such as spheres and polygons with precisely controlled morphology and molecular orientations. In addition, the article shows the microcavity functions of the self-assembled micro-objects, as well as their applications in optical sensing and optical logic operations.
ACCOUNTS OF CHEMICAL RESEARCH
(2023)
Article
Chemistry, Physical
Mingduo Mu, Frans A. M. Leermakers, Jianshe Chen, Melvin Holmes, Rammile Ettelaie
Summary: Polymer architecture has a significant impact on adsorption behavior. By comparing different amphiphilic polymer architectures, it was found that branched structures can be viewed as analogues of linear block polymers based on the location of their adsorbing units.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Xinmao Li, Jianxin Guan, Chengzhen Shen, Zhihao Yu, Junrong Zheng
Summary: The aggregation morphologies of conjugated polymers in solutions and solid films are important for their optoelectronic applications. It remains a great challenge to determine their conformations in either liquids or solids due to the amorphous state of the polymers. This study applied a ps/fs synchronized 2D IR technique to investigate the molecular conformations of a high-mobility n-type low-bandgap copolymer, N2200, dissolved in CHCl3 and CCl4, and in solid films cast from both solutions. The results provide insights into the balance and competition between the polymer/polymer interaction and the polymer/solvent interaction in determining the morphology of solid films cast from solution.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Polymer Science
Xiang-Yue Cheng, Qi-Kun Feng, Zhi-Min Dang, Fu-Sheng Du, Zi-Chen Li
Summary: This paper reports the synthesis and molar mass control of three alternating [1.1.1]propellane-(meth)acrylate copolymers. The copolymers exhibit high thermal stability and semi-crystalline properties. The introduction of the rigid bicyclo[1.1.1]pentane unit into the polymer backbone enhances the dielectric constants and ensures high breakdown strength, resulting in extraordinary energy storage performance.
MACROMOLECULAR RAPID COMMUNICATIONS
(2023)
Article
Chemistry, Analytical
Meihui Chen, Wenheng Huang, Yangping Li, Yongchun Chen, Dan Ji, Mingguang Zhu
Summary: A simple probe with alpha-cyanostilbene-functioned salicylaldehyde-based Schiff-base structure showed outstanding 'aggregation-induced emission and excited state intramolecular proton transfer (AIE + ESIPT)' emission in solution, aggregation, and solid states. It exhibited highly selective fluorescence quenching for Co2+ in the THF/water system with a detection limit of 0.41 x 10(-8) M.
METHODS AND APPLICATIONS IN FLUORESCENCE
(2023)
Article
Polymer Science
Pei Huang, Meiwei Qi, Chuanshuang Chen, Fugui Xu, Shanlong Li, Qingsong Xu, Hui Pan, Yuling Wang, Chunyang Yu, Shaodong Zhang, Yongfeng Zhou
Summary: The asymmetric distribution of lipids on the inner and outer membranes of a cell is crucial for physiological and immunological activities. Synthetic asymmetric vesicles are prepared using amphiphilic block copolymers, or self-assembled by two hydrophilic segments. Effective fluorescence titration methods can be developed to determine the uneven distribution of segments in the vesicles. This work demonstrates the potential of sequence-controlled polymers for creating challenging self-assembled structures with important functions and properties.
Article
Polymer Science
Wei Song, Xiaotian Qu, Yadi Li, Juan Li, Chengshuang Wang, Liang Ding
Summary: Two kinds of alternating and random copolymers were synthesized using ALTMET and ADMET methods, exploring the effects of monomer sequences and electron transfer capability on self-assembly morphology and photoresponsive properties. The unique absorption features from azo units and the modulation of sizes and morphologies of alternating copolymers were observed, demonstrating a facile method for constructing azo-carbazole and azo-fluorene metathesis copolymers with expanded optical properties.
Article
Polymer Science
Wenwen Mei, Deyang Yu, Louis A. Madsen, Robert J. Hickey, Ralph H. Colby
Summary: Understanding the dielectric response and charge transport in ion-containing polymers is crucial for their application in energy-related fields. In this study, the impact of anion chemical composition on ion conduction in poly(ethylene oxide)-based lithium ionomers was investigated using a four-state model. DFT calculations with the cluster-continuum solvation model revealed low cluster dissociation energy and explained the weakly aggregated morphology, indicating rapid exchange of Li+ between different ion states. These findings offer new insights for promoting ion conduction and dielectric response in single-ion conducting ionomers.
Review
Chemistry, Multidisciplinary
Tien-Yau Luh, Wei-Yu Lin, Guoqiao Lai
CHEMISTRY-AN ASIAN JOURNAL
(2020)
Article
Chemistry, Applied
Chih-Hsien Chen, Zi-Huan Luo, I-Hong Huan, Yu-Han Chen, Tsong-Shin Lim
Article
Chemistry, Physical
Chih-Hsun Lin, Geng-Min Lin, Er-Chien Horng, Tzu-Ching Chou, Yi-Chen Liu, Tsai-Hui Wang, Wei-Ling Hua, Hsiu-Fu Hsu, Chun-hsien Chen
JOURNAL OF PHYSICAL CHEMISTRY C
(2020)
Article
Polymer Science
Chih-Hsien Chen, Guo-Qiao Lai, Tien-Yau Luh
Summary: The use of TAE in polymers depends on the distance between TAE linkers and the solvent conditions, resulting in differences in the quantum yield of the formed excimer. Entangling of hexyloxy groups may affect the formation of the excimer.
Article
Chemistry, Physical
Mong-Wen Gu, Hao Howard Peng, I-Wen Peter Chen, Chun-hsien Chen
Summary: Understanding chemical bonding and conductivity at the electrode-molecule interface is crucial for the operation of single-molecule junctions. By applying d-band theory and surface d-band model, it is possible to explain and optimize these devices. Coating Au electrodes with Ag or Cu monolayers can improve the molecule-electrode binding strength and electrical conductivity, attributed to the tuning of the metal's surface d bands.
Review
Chemistry, Multidisciplinary
Hao Howard Peng, Chun-hsien Chen
Summary: Investigations on charge transport at a molecular scale are important for both science and miniaturized electronic devices. This mini-review provides an overview of theoretical and experimental efforts in this field, with a focus on prevalent experimental techniques and the challenges and limitations they present.
JOURNAL OF THE CHINESE CHEMICAL SOCIETY
(2022)
Review
Chemistry, Multidisciplinary
Tien-Yau Luh, Yen-Ju Cheng
Summary: This article summarizes the synthetic efforts on using rhodium-catalyzed hydrosilylation reaction to incorporate different kinds and/or numbers of chromophores arranged regioselectively on the polymeric backbone. The systematic examination of photophysical properties reveals that these silicon-containing polymers exhibit a range of optical behaviors.
JOURNAL OF THE CHINESE CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Ming-Chuan Cheng, Gene-Hsiang Lee, Tien-Sung Lin, Yu-Chiao Liu, Ming-Hsi Chiang, Chun-hsien Chen, Shie-Ming Peng
Summary: A synthetic strategy for MAMBMC-type heteronuclear metal-string complexes is demonstrated, and the properties of the complexes are tailored by changing the terminal metals. The structures, electrochemistry, and magnetism of the metal strings are investigated, revealing the influence of the interactions between the terminal metals on the properties of the complexes.
JOURNAL OF THE CHINESE CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Tsang-Wei Matt Chen, Yuki Tanaka, Yohei Kametani, Kum-Yi Cheng, Chih-Hsun Lin, Yi Rick Lin, Ting-Rong Hsu, Zuqian Chen, Jiping Hao, Shigeki Mori, Yoshihito Shiota, Kazunari Yoshizawa, Hiroyuki Furuta, Soji Shimizu, Chun-Hsien Chen
Summary: This study scrutinizes the spontaneous assembly of antiaromatic compounds at the liquid-solid interface using scanning tunneling microscopy (STM). The research reveals the polymorphism in monolayers characterized by orthogonal and parallel assemblies at different concentrations. The parallel assembly is found to be more stable and dominantly formed at higher concentrations. Moreover, the narrowing of the HOMO-LUMO gap suggests significant molecular orbital interactions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Mong-Wen Gu, Chih-Ta Lai, I-Chih Ni, Chih- Wu, Chun-hsien Chen
Summary: Fermi's golden rule, a remarkable concept for transition probability, has not been reported in single-molecule junctions with gold electrodes. To increase electron-transport efficiency, gold electrodes were modified with a monolayer of platinum or palladium, which have partially filled d-shells and significant surface density of states at the Fermi energy. The improved junction conductance is attributed to a stronger electrode-molecule coupling and larger participation of d-electrons in the surface density of states.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Polymer Science
Yucen Zuo, Yufeng Yao, Chunyu Chen, Yixin Liang, Ke-Fang Yang, Ze Li, Guo-Qiao Lai, Pinglu Zhang, Tien-Yau Luh
Summary: The substituents on cyclopropenes and catalysts have a significant impact on the reactivity and selectivity of ring-opening metathesis polymerization (ROMP). In this study, different chemoselectivities were observed when using piperidine-appended spirocyclopropenes (SCPs) and various Grubbs catalysts. The conformational difference between the piperidine and azetidine motifs plays a crucial role in determining the reactivity, selectivity, and polymerization pathway. This work provides insights into the mechanism of chemoselective ROMP of spirocyclopropenes using Grubbs catalysts and offers guidance for designing new ROMP reactions.
Article
Chemistry, Multidisciplinary
Chieh-Ming Hung, Jin-Tai Lin, Yu-Hsuan Yang, Yi-Chun Liu, Mong-Wen Gu, Tai-Che Chou, Sheng-Fu Wang, Zi-Qin Chen, Chi-Chi Wu, Li-Cyun Chen, Cheng-Chih Hsu, Chun-Hsien Chen, Ching-Wen Chiu, Hsieh-Chih Chen, Pi-Tai Chou
Summary: A new series of zwitterions were designed and synthesized as boundary modulators for improving the performance of inverted perovskite solar cells (PSCs). The zwitterions were found to play important roles in balancing charge carrier transport, suppressing defects, enhancing moisture resistance, and reducing ion migration, leading to significant improvements in the efficiency and stability of the PSCs.
Article
Chemistry, Multidisciplinary
Lei Yu, Guo-Qiao Lai, Pinglu Zhang, Ze Li, Tien-Yau Luh
Summary: Products from cross-coupling reactions of main group elements act as Lewis acids and mediate further reactions. In the presence of nickel catalyst, the olefination of benzylic dithioacetal with MeMgI generates magnesium mercaptide, which selectively converts 2-arylpropene into a dimer. The use of organozinc reagent instead of Grignard reagent improves the yield of the dimers.
Article
Chemistry, Physical
Asmida Herawati, Hui-Ching Lin, Shun-Hsiang Chan, Ming-Chung Wu, Tsong-Shin Lim, Forest Shih-Sen Chien
Summary: Photon-induced trap deactivation in organometal halide perovskites can lead to obvious photoluminescence enhancement. Two types of electron traps were identified in CH3NH3PbI3 perovskite films, with different deactivation behaviors under illumination of lasers at different wavelengths. The deactivation process is photon-related, and the deactivation time is inversely proportional to the photon flux density.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Riza Ariyani Nur Khasanah, Hui-Ching Lin, Hsiang-Yun Ho, Yen-Ping Peng, Tsong-Shin Lim, Hsi-Lien Hsiao, Chang-Ren Wang, Min-Chieh Chuang, Forest Shih-Sen Chien
Summary: Cu2O is a promising material for photocatalysis due to its absorption ability in the UV-visible light range, functioning as a photocathode when deposited on conductive Ti and FTO substrates, and as a photoanode when deposited on n-type semiconductors like TiO2 nanotube arrays. The photocatalytic properties of Cu2O heterojunctions on different substrates were systematically studied, showing that Cu2O/TNA/Ti exhibited higher photocurrent spectral responses compared to Cu2O/Ti and Cu2O/FTO photocathodes. The enhancement of photocatalytic activity in Cu2O/TNA/Ti was attributed to its UV-visible light absorption capabilities.
Article
Polymer Science
Paige A. Shaw, Maxime Klausen, Mark Bradley
Summary: A light-responsive polymer capable of controlled release of camptothecin and generation of reactive oxygen species (ROS) was developed, which exhibited high cancer cell killing activity through both camptothecin release and ROS generation.
Article
Polymer Science
Donghui Zhang, Shiqi Liu, Zhihao Cai, Weizhe Luo, Guojian Liu, Runhui Liu
Summary: A straightforward and efficient method for synthesizing NPC monomers has been developed in this study, which enhances the availability of NPC monomers and facilitates the synthesis of polypeptides.
