Article
Chemistry, Multidisciplinary
Enosha Harshani De Silva, Bruce M. Novak
Summary: Carbodiimide polymers with bulky branched aliphatic and octadecyl side chains were studied for their solid and solution properties. It was found that polycarbodiimides containing octadecyl and branched alkyl side chains exhibited different thermal events at around 30 degrees C, and increased branched alkyl side chains led to decreased thermal stability. Lyotropic liquid crystallinity was observed in branched copolymers with a combination of branched alkyl side chains and octadecyl functional groups in different ratios.
Article
Polymer Science
Mingmin Li, Jiahao Qiu, Yifei Yue, Jingbing Liu, Baohua Zhang
Summary: In this paper, a novel method is proposed to solve the multi-component phase separation issue in polyamide 6 (PA6) by synthesizing a poly (amide-block-aramid) block copolymer and dissolving it in molten epsilon-caprolactam. The thermodynamic, morphological, and crystalline properties of the resulting composite polymer blends were easily manipulated by adjusting the loading ratios, showing excellent miscibility at optimized conditions. The overall mechanical properties of these PA6-based polymer composites are expected to be satisfactory for applications in the modern plastic industry and other emerging areas.
Article
Chemistry, Physical
Wenjie Bi, Zhiyuan Zheng, Yue Wang, Ziyang Shi, Kunlun Wang, Yingliang Liu, Shengang Xu, Shaokui Cao
Summary: This study successfully synthesized fluorinated triphenylene monomers and polymers with discotic liquid crystalline polymer structures, and investigated their structures and properties using various characterization methods. The polymers exhibited good thermal stability and showed different liquid crystalline phases. This research is important for structural modifications of discotic liquid crystalline polymers and has potential applications in organic optoelectronics.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Multidisciplinary
Bin Mu, Zhelin Zhang, Yu Zhao, Xiangnan Hao, Wei Tian
Summary: This study presents a series of liquid-crystalline polymers with α-cyanostilbene pendants attached to polymer backbone by varying lengths of ethylene glycol spacers, allowing for tuning of columnar ordering and fluorescence emission wavelength. By elongating the spacer, the columnar dimensions increase and the fluorescence emission blue-shifts gradually, providing insights into the influence of spacer length in liquid-crystalline polymers.
CHINESE JOURNAL OF CHEMISTRY
(2021)
Article
Polymer Science
Mark J. Moran, Olena Ouskova, Katherine M. Gerosa, Anna Tabirian, Nelson Tabiryan, Nicholas P. Godman, Michael E. McConney, Jonathan Slagle, Timothy J. Bunning
Summary: The directed self-assembly of liquid crystal polymers has superior optical properties compared to conventional isotropic optical materials. However, the exploration of reflective liquid crystalline polymeric films has been limited due to production challenges. In this study, we investigate stacked polymer cholesteric liquid crystal thin films as a means to generate reflective diffractive optics for circularly polarized light. We present three different exemplar cases to demonstrate the potential of these unique thin polymer films.
Article
Chemistry, Multidisciplinary
Mengqi Fang, Tao Liu, Yang Xu, Binjie Jin, Ning Zheng, Yue Zhang, Qian Zhao, Zheng Jia, Tao Xie
Summary: The research presents a new digital photocuring method for the fast fabrication of LCE artificial muscles capable of complex motions, eliminating the need for traditional mesogen alignment techniques. Drawing inspiration from muscle motion principles, strategically arranged bending modules are designed using spatiotemporal digital light to achieve highly designable motions for LCEs.
ADVANCED MATERIALS
(2021)
Article
Biochemistry & Molecular Biology
Jae Gwang Kim, Jae Gyeong Lee, Jeong Jae Wie
Summary: This study reports the polymerization of liquid crystalline polymeric fibers in non-spherical droplets and micro-channels, resulting in curvilinear and randomly networked filaments as well as highly aligned linear fibers, respectively. The controlled molecular assembly achieved through micro-confinement suggests a unique opportunity for programming material architecture.
Article
Chemistry, Multidisciplinary
Grant E. Bauman, Joselle M. McCracken, Timothy J. White
Summary: Liquid crystal elastomers (LCE) are emerging material actuators that undergo macroscopic dimensional changes when stimulated. In this study, LCE is prepared using thiol-Michael/thiol-ene reactions, enabling actuation at or below ambient temperature. The alignment of LCE is achieved through mechanical alignment and 3D printing, allowing for high strain and tunable thermotropic response.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Polymer Science
Enjie He, Kai Tu, Jiannan Cheng, Yuxue Wang, Huanjun Lu, Lifen Zhang, Zhenping Cheng
Summary: In this study, perfluorinated segments were introduced to increase the structural complexity of side-chain liquid crystalline polymers (SCLCP), and the interaction between the main chain and mesogens was investigated. By adjusting the length of spacers or perfluoroalkyl segments, different mesophases with complex chain packing structures were achieved.
MACROMOLECULAR RAPID COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Zi-Yun Zhang, Jiang-Tao Sun, Chun-Yang Li, Ya-Ping Liu, Zhong-Xin Ge, Ying-Gang Jia, Mei Tian, Dan-Shu Yao
Summary: In this study, two azo liquid crystal monomers and a chiral liquid crystal monomer were synthesized to prepare liquid crystalline polymers. The synthesized polymers exhibited good liquid crystal properties and thermal stability, making them suitable for applications in liquid crystal materials.
Article
Mechanics
Young-Hoon Ko, Jia-le Che, Seung-Hwan Chang
Summary: In this study, the performances of connectors made of various glass fibre/liquid crystalline polyester composites for burn-in tests were analyzed using mechanical testing and finite element analyses. Material characterizations and fatigue testing were conducted, and the 40 wt% milled glass fiber/liquid crystalline polyester composite was identified as the most suitable material for the burn-in test board connector structure.
COMPOSITE STRUCTURES
(2022)
Article
Multidisciplinary Sciences
Sanghyeon Park, Yeji Na, A. Young Kim, Lee Ku Kwac, Hong Gun Kim, Jin-Hae Chang
Summary: A series of thermotropic liquid crystal copolyesters were prepared and the effect of HBA content on the liquid crystalline phase was investigated. The optimal annealing conditions were determined to improve the properties and crystallinity of the fibers.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Physical
Anastasiia E. Soldatova, Regina N. Shamsutdinova, Tatiana Plisko, Katsiaryna S. Burts, Anna Yu Tsegelskaya, Dmitry A. Khanin, Kristina Z. Monakhova, Tikhon S. Kurkin, Alexandr Bildyukevich, Alexander A. Kuznetsov
Summary: A series of aromatic polyimides were synthesized using the one-pot high-temperature catalytic polycondensation method in molten benzoic acid. The properties of these polyimides and the influence of the synthesis method on the crystalline phase formation were investigated. The performance of polyimide PI-DA in membrane separation was compared with the commercially available polyetherimide Ultem 1000(TM).
Article
Polymer Science
Xin Li, Xiaolong Chang, Ximing Zheng, Weiwei Kong, Yu Zhuang, Guiyang Yan, Fanbao Meng
Summary: The study synthesized a series of phthalocyanine-based ionic liquid-crystalline polysiloxanes, characterized their thermal and liquid-crystalline behavior, and investigated the relationship between dielectric properties and LC phase. The prepared ER fluids based on ILCPs showed enhanced ER performance with increasing ionic phthalocyanine moieties, and exhibited synergetic rearrangement and orientation in real-time response experiments. Compatibility between the ILCPs' polysiloxane matrix and the polysiloxane-based silicon oil contributed to good sedimentation property of the ERFs.
EUROPEAN POLYMER JOURNAL
(2021)
Article
Nanoscience & Nanotechnology
Kristin L. Lewis, Katie M. Herbert, Valentina M. Matavulj, Jonathan D. Hoang, Eric T. Ellison, Grant E. Bauman, Jeremy A. Herman, Timothy J. White
Summary: The synthesis of liquid crystalline elastomers (LCEs) with intra-mesogenic supramolecular bonds via direct free-radical chain transfer photopolymerization enables shape change under mechanical alignment, providing functional utility in robotics, medicine, consumer goods, and photonics.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Juan Zhao, Xiaojie Chen, Zhan Yang, Tiantian Liu, Zhiyong Yang, Yi Zhang, Jiarui Xu, Zhenguo Chi
JOURNAL OF PHYSICAL CHEMISTRY C
(2019)
Article
Polymer Science
Yi-Wu Liu, Li-Shuang Tang, Lun-Jun Qu, Si-Wei Liu, Zhen-Guo Chi, Yi Zhang, Jia-Rui Xu
CHINESE JOURNAL OF POLYMER SCIENCE
(2019)
Article
Materials Science, Multidisciplinary
Hongmin Hao, Haiyuan Luo, Aihua Yi, Cong Liu, Bingjia Xu, Guang Shi, Zhenguo Chi
ORGANIC ELECTRONICS
(2019)
Article
Materials Science, Multidisciplinary
Junru Chen, Tao Yu, Eethamukkala Ubba, Zongliang Xie, Zhiyong Yang, Yi Zhang, Siwei Liu, Jiarui Xu, Matthew P. Aldred, Zhenguo Chi
ADVANCED OPTICAL MATERIALS
(2019)
Article
Chemistry, Multidisciplinary
Jiangang Feng, Wen Wen, Xiao Wei, Xiangyu Jiang, Moyuan Cao, Xuedong Wang, Xiqi Zhang, Lei Jiang, Yuchen Wu
ADVANCED MATERIALS
(2019)
Article
Chemistry, Physical
Xuan Wang, Huili Ma, Mingxing Gu, Changqing Lin, Nan Gan, Zongliang Xie, He Wang, Lifang Bian, Lishun Fu, Suzhi Cai, Zhenguo Chi, Wei Yao, Zhongfu An, Huifang Shi, Wei Huang
CHEMISTRY OF MATERIALS
(2019)
Article
Polymer Science
Chao Qian, Runxin Bei, Tianwen Zhu, Weiwen Zheng, Siwei Liu, Zhenguo Chi, Matthew. P. Aldred, Xudong Chen, Yi Zhang, Jiarui Xu
Review
Chemistry, Multidisciplinary
Jie Yang, Zhenguo Chi, Weihong Zhu, Ben Zhong Tang, Zhen Li
SCIENCE CHINA-CHEMISTRY
(2019)
Article
Multidisciplinary Sciences
Yang Yang, Shuai Zhang, Xiqi Zhang, Longcheng Gao, Yen Wei, Yan Ji
NATURE COMMUNICATIONS
(2019)
Article
Materials Science, Multidisciplinary
Xiqi Zhang, Markus Antonietti, Lei Jiang
SCIENCE CHINA-MATERIALS
(2020)
Article
Chemistry, Multidisciplinary
Hang Zhou, Xia Sheng, Jie Xiao, Zhenyao Ding, Dandan Wang, Xiqi Zhang, Jian Liu, Renfei Wu, Xinjian Feng, Lei Jiang
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2020)
Article
Chemistry, Physical
Lu Zhou, Liping Chen, Zhenyao Ding, Dandan Wang, Hao Xie, Weihai Ni, Weixiang Ye, Xiqi Zhang, Lei Jiang, Xinjian Feng
Summary: A highly efficient triphase biocatalytic system using oil core-silica shell oxygen nanocarriers was reported, providing a large three-phase interfacial area and a short diffusion path for oxygen. The system demonstrated a significant rate enhancement in oxidase enzymatic reactions, offering the opportunity to enhance the efficiency of other gaseous reactants in multiphase catalytic reactions.
Article
Nanoscience & Nanotechnology
Xiangyu Jiang, Zhenwei Yu, Chao Ma, Dong Wang, Yuchen Wu, Ce Shi, Yunqi Li, Jinhui Pang, Xiqi Zhang, Lei Jiang
Summary: An optical organic vapor sensor array utilizing AIE/polymer composite microwires is fabricated using capillary-bridge-mediated assembly method, allowing for rapid detection and identification of different organic vapors based on swelling-induced fluorescence change. Molecular design of the polymer side chains and AIE molecules can enhance sensitivity to subparts per million level, due to the similar polarity between the AIE group and vapor molecules.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Yuwei Hao, Shuai Pang, Xiqi Zhang, Lei Jiang
Article
Polymer Science
Hainan Gao, Yudong Cai, Shuhong Li, Xiqi Zhang, Tianyi Zhao, Mingjie Liu, Lei Jiang
