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Synthesis of POSS-functionalized liquid crystalline block copolymers via RAFT polymerization for stabilizing blue phase helical soft superstructures
Jin, J. Q.; Tang, M. J.; Zhang, Z. H.; Zhou, K.; Gao, Y.; Zheng, Z. G.; Zhang, W. A.
2018
Source PublicationPolymer Chemistry
ISSN1759-9954
Volume9Issue:16Pages:2101-2108
AbstractA series of POSS-functionalized liquid crystalline block copolymers (LC BCPs), PHEMAPOSS-b-P6CBMA, containing a crystalline polyhedral oligomeric silsesquioxane (POSS) block and a mesogenic cyanobiphenyl block, were prepared via reversible addition-fragmentation transfer (RAFT) polymerization for the first time and utilized to stabilize blue phase (BP) liquid crystals through facile doping. Using the advantages of both the POSS and polymer, a new strategy, which is distinct from the commonly adopted strategy for polymer stabilization of the BP, has been established. This new BP system with a wide BP range covering the typical room temperature range (i.e. 25-30 degrees C) leaps over intricate processing barriers, which are inevitable in conventional photo-induced polymer stabilization. In particular, improved electro-optical (E-O) properties of the BP, including lower driving voltage, lower hysteresis and a higher Kerr constant (K) compared with the common BP stabilized via photopolymerization, were obtained by optimizing the concentration of the doped LC BCP. Differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) were employed to evaluate the thermal properties of the LC BCPs, and the results indicated that the introduction of POSS enhanced the thermostabilities of the copolymers effectively. Such an ingenious strategy provides a brilliant and easy way to form large size BP displays and other devices that are incompatible with UV light exposure during the working process.
Keywordpolyhedral oligomeric silsesquioxane one-pot synthesis hierarchical structure hybrid copolymer thin-films nanoparticles assemblies template polymers nanostructures Polymer Science
DOI10.1039/c8py00136g
Indexed BySCI ; EI
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ciomp.ac.cn/handle/181722/61172
Collection中国科学院长春光学精密机械与物理研究所
Recommended Citation
GB/T 7714
Jin, J. Q.,Tang, M. J.,Zhang, Z. H.,et al. Synthesis of POSS-functionalized liquid crystalline block copolymers via RAFT polymerization for stabilizing blue phase helical soft superstructures[J]. Polymer Chemistry,2018,9(16):2101-2108.
APA Jin, J. Q..,Tang, M. J..,Zhang, Z. H..,Zhou, K..,Gao, Y..,...&Zhang, W. A..(2018).Synthesis of POSS-functionalized liquid crystalline block copolymers via RAFT polymerization for stabilizing blue phase helical soft superstructures.Polymer Chemistry,9(16),2101-2108.
MLA Jin, J. Q.,et al."Synthesis of POSS-functionalized liquid crystalline block copolymers via RAFT polymerization for stabilizing blue phase helical soft superstructures".Polymer Chemistry 9.16(2018):2101-2108.
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