Mixed [2:6] hetero-arm star polymers based on Janus POSS with precisely   defined arm distribution

doi:10.1039/c6py00241b

CORC > 北京大学 > 化学与分子工程学院

	Mixed [2:6] hetero-arm star polymers based on Janus POSS with precisely defined arm distribution
	Shao, Yu ; Yin, Hang ; Wang, Xiao-Man ; Han, Shuai-Yuan ; Yan, Xuesheng ; Xu, Jun ; He, Jinlin ; Ni, Peihong ; Zhang, Wen-Bin
刊名	POLYMER CHEMISTRY
	2016
关键词	OLIGOMERIC SILSESQUIOXANE POSS ANIONIC-POLYMERIZATION NANOBUILDING BLOCKS SHAPE AMPHIPHILES MOLECULAR DESIGN GIANT MOLECULES CLICK CHEMISTRY NANOPARTICLES MICELLES DELIVERY
DOI	10.1039/c6py00241b
英文摘要	One important, yet less explored molecular parameter of star polymers is the distribution of arms in three dimensional (3D) space. Herein, we describe the synthesis of a series of mixed [ 2 : 6] hetero-arm star polymers whose arms are precisely arranged on a cubic scaffold of T8 polyhedral oligomeric silsesquioxane (POSS). The synthesis begins with regio-isomeric Janus POSS compounds (para-, meta- ,and ortho-isomers) with two hydroxylethyl and six vinyl pendant groups. Two poly(e-caprolactone) (PCL) chains are grown from the hydroxyls by Sn(Oct)(2)-mediated ring-opening polymerization. The vinyls are then converted to azides for subsequent "grafting" of six polystyrene (PS) arms onto POSS. The configuration of the final star polymers was thoroughly characterized by NMR, FT-IR, SEC, and MALDI-TOF mass spectrometry. This serves as the first few examples of mixed-arm star polymers with precise distribution of multiple arms, providing an intriguing platform for the study of their self-assembly.; National Natural Science Foundation of China [21474003, 91427304, 21304061]; 1000 Plan (Youth); Natural Science Foundation of Jiangsu Province [BK20130286]; Beijing National Laboratory for Molecular Sciences (BNLMS) [20140152]; SCI(E); ARTICLE; jlhe@suda.edu.cn; wenbin@pku.edu.cn; 13; 2381-2388; 7
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/438886]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Shao, Yu,Yin, Hang,Wang, Xiao-Man,et al. Mixed [2:6] hetero-arm star polymers based on Janus POSS with precisely defined arm distribution[J]. POLYMER CHEMISTRY,2016.
APA	Shao, Yu.,Yin, Hang.,Wang, Xiao-Man.,Han, Shuai-Yuan.,Yan, Xuesheng.,...&Zhang, Wen-Bin.(2016).Mixed [2:6] hetero-arm star polymers based on Janus POSS with precisely defined arm distribution.POLYMER CHEMISTRY.
MLA	Shao, Yu,et al."Mixed [2:6] hetero-arm star polymers based on Janus POSS with precisely defined arm distribution".POLYMER CHEMISTRY (2016).