83883-25-4Relevant articles and documents
Programmable Chromism and Photoluminescence of Spiropyran-Based Liquid Crystalline Polymer with Tunable Glass Transition Temperature
Hu, Wei,Qin, Shengyu,Ren, Yunxiao,Shao, Yu,Sun, Chang,Wang, Qian,Wu, Yu,Yang, Dengke,Yang, Huai,Zhang, Lanying
supporting information, p. 19406 - 19412 (2021/08/06)
Spiropyran-based materials (SPBMs) can give responses to the stimulations induced by the light, heat, force, or pH, which have been used as triggers for many smart materials. Here, a cross-linkable SPBM containing mesogenic-units is synthesized, which is pale-colored, non-photoluminescent and non-mesogenic at a spiro form, but dark-colored, photoluminescent, and mesogenic at a merocyanine form. Moreover, the dynamic interconversion behavior of the form in the different chemical environments are distinct. Liquid crystalline polymers (LCPs) containing the SPBMs cross-linked via visible light, own a photoswitchable glass transition temperature (Tg) and retain the switchable property; however, the SPBMs cross-linked via UV light will be locked at the MC state, because the molecular movement was frozen at the room temperature lower than the given Tg of the LCP. Thus, programmable chromism and photoluminescence based on the tunable Tg can be endowed to the functional materials prepared from the SPBMs.
Allyl sulfide-based visible light-induced dynamically reshaped liquid crystalline elastomer/SWCNT nanocomposites capable of multimode NIR photomechanical actuations
Chen, Dongzhong,Cheng, Pin,Fang, Jianglin,Wu, Zhongying,Xu, Tianchi,Zhao, Weiguang
supporting information, p. 10902 - 10910 (2020/07/15)
Liquid crystalline elastomers (LCEs) combine the ordering character of a liquid crystal and the elasticity of a polymer network. The development of fully light-driven LCE-based soft actuators with good reshapeability and recyclability is in high demand. In this work, we prepared SWCNT/LCE composite films through the introduction of allyl sulfide-based dynamic covalent crosslinks in the LCE matrix and the well-dispersed filler single-walled carbon nanotubes (SWCNTs) with a strong photothermal effect. The SWCNT/LCE composite films were facilely fabricated with reorientation and remouldable capabilities regulated by 405 nm visible light. The monodomain composite films demonstrated multimode actuations of contraction, bending, curling, stretching recovery, and even shape memory driven by 808 nm near-infrared (NIR) light. Moreover, the monodomain spiral ribbon or stretching flat strip and the original polydomain composite film can be readily transformed into each other, and reshaped through easily achievable fabrication conditions. Therefore, the well-prepared SWCNT/LCE composite films with exchangeable covalent crosslinks showed promise as candidates for the development of multimode NIR photomechanical soft actuators with fully light-driven controllability and good remouldability. This journal is
Optical anisotropic, body and liquid crystal display device using same (by machine translation)
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Page/Page column 16; 17; 19-23, (2019/12/25)
The present invention relates to, an optically isotropic and liquid crystal display device. according to Formula I, and discloses a compound having a polymerizable group, represented by Formula I, and a liquid crystal display device according to the present invention. In-flight vehicle A1 , A2 An, alkyl group having an alkyl group having 3 - 10 a number, of carbon atoms 4 - 10, an, alkenyl group having a number of, carbon atoms, or an alkoxy group having a 3 - 10 number of carbon atoms as described above may be selected independently from each other. 2 -O-Optionally, optionally hydrogen, optionally substituted with a hydrogen, atom, optionally substituted with a hydrogen atom in F the range of ;Z up to 'OH'. 1 , Z2 Each independently represents-COO-CO-CH2 COO - COOCH2 - CH. 2 CH2 Or COO - COOCH2 CH2 ; N, m, respectively, independently 1, 2 3. the present invention provides, a polymerizable compound having, an excellent optical performance and excellent, intermiscibility, and good stability, is not susceptible to deterioration and polymerization in the production, and storage process, is, inexpensive to produce, and is. simple to produce and facilitate large-scale commercialization applications. (by machine translation)
