Synthesis and sub-10 nm supramolecular self-assembly of a nanohybrid   with a polynorbornene main chain and side-chain POSS moieties

doi:10.1039/c5ra12152c

CORC > 北京大学 > 化学与分子工程学院

	Synthesis and sub-10 nm supramolecular self-assembly of a nanohybrid with a polynorbornene main chain and side-chain POSS moieties
	Hou, Ping-Ping ; Gu, Ke-Hua ; Zhu, Yu-Feng ; Zhang, Zheng-Yu ; Wang, Qian ; Pan, Hong-Bing ; Yang, Shuang ; Shen, Zhihao ; Fan, Xing-He
刊名	RSC ADVANCES
	2015
关键词	LIQUID-CRYSTALLINE POLYMERS MOLECULAR-WEIGHT PHASE-BEHAVIOR LENGTH SCALES NANOSTRUCTURES SILSESQUIOXANE ARCHITECTURE TEMPERATURE TRANSITION COPOLYMER
DOI	10.1039/c5ra12152c
英文摘要	A polynorbornene-based mesogen-jacketed liquid crystalline polymer (MJLCP) containing polyhedral oligomeric silsesquioxane (POSS) in the side chain, PNb10POSS, was synthesized through ring-opening metathesis polymerization. The chemical structure of the monomer was confirmed by H-1/C-13 NMR, high-resolution mass spectrometry, and elemental analysis. Molecular characterizations on the polymer were performed with H-1 NMR, gel permeation chromatography, and thermogravimetric analysis. The phase behavior of this new organic-inorganic hybrid polymer was investigated by differential scanning calorimetry, polarized light microscopy, one-dimensional wide-angle X-ray scattering, synchrotron-radiation small-angle X-ray scattering (SAXS), two-dimensional wide-angle X-ray diffraction, and high-resolution transmission electron microscopy. With the competitive self-assemblies of the two covalently connected building blocks, namely MJLCP and POSS moieties, PNb10POSS shows various phase structures including an angstrom POSS crystal (Cr), a hexagonal columnar (Col(h)) phase and the Cr coexisting, and the Col(h) phase at different temperatures. The POSS crystal has a tremendous effect on the liquid crystalline (LC) behavior of the MJLCP. The results show that the competition between the crystallization of POSS and the LC formation of the polymer as a whole results in the complex phase behavior of the MJLCP-based nanohybrid. The polymer self-assembles into an organic-inorganic hybrid inclusion complex on the sub-10 nm scale. This work provides a new approach for the design and synthesis of ordered structures constructed by self-assembly on the sub-10 nm scale.; National Natural Science Foundation of China [21134001, 21374002, 20990232]; SCI(E); EI; ARTICLE; zshen@pku.edu.cn; fanxh@pku.edu.cn; 86; 70163-70171; 5
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/421086]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Hou, Ping-Ping,Gu, Ke-Hua,Zhu, Yu-Feng,et al. Synthesis and sub-10 nm supramolecular self-assembly of a nanohybrid with a polynorbornene main chain and side-chain POSS moieties[J]. RSC ADVANCES,2015.
APA	Hou, Ping-Ping.,Gu, Ke-Hua.,Zhu, Yu-Feng.,Zhang, Zheng-Yu.,Wang, Qian.,...&Fan, Xing-He.(2015).Synthesis and sub-10 nm supramolecular self-assembly of a nanohybrid with a polynorbornene main chain and side-chain POSS moieties.RSC ADVANCES.
MLA	Hou, Ping-Ping,et al."Synthesis and sub-10 nm supramolecular self-assembly of a nanohybrid with a polynorbornene main chain and side-chain POSS moieties".RSC ADVANCES (2015).