Stochastic/Controlled Symmetry Breaking of the T-8-POSS Cages toward   Multifunctional Regioisomeric Nanobuilding Blocks

doi:10.1002/chem.201502125

CORC > 北京大学 > 化学与分子工程学院

	Stochastic/Controlled Symmetry Breaking of the T-8-POSS Cages toward Multifunctional Regioisomeric Nanobuilding Blocks
	Wang, Xiao-Man ; Guo, Qing-Yun ; Han, Shuai-Yuan ; Wang, Jing-Yi ; Han, Di ; Fu, Qiang ; Zhang, Wen-Bin
刊名	CHEMISTRY-A EUROPEAN JOURNAL
	2015
关键词	cage compounds isomers nanoparticles NMR spectroscopy regioselectivity POLYHEDRAL OLIGOMERIC SILSESQUIOXANES DECKER-SHAPED SILSESQUIOXANE MOLECULAR DESIGN JANUS PARTICLES VINYL T-10 POSS ROUTE POLYMERIZATION DERIVATIVES FUNCTIONALIZATION
DOI	10.1002/chem.201502125
英文摘要	Precise synthesis of nanobuilding blocks with accurately positioned functional groups presents a daunting challenge. Herein, a practical synthesis and thorough characterization of a series of T-8-polyhedral oligomeric silsesquioxane (POSS) di- and triadducts is reported. Upon addition of triflic acid across the double bonds in octavinylPOSS (V8T8) followed by hydrolysis, the cubic symmetry of the T-8-POSS cage (O-h) is broken into C-2v (ortho-), C-2v (meta-), and D-3d (para-) for diadducts and further to C-s (oom-), C-s (omp-), and C-3v (mmm-) for triadducts in a stochastic fashion. Their structures and regioconfigurations have been unambiguously demonstrated by H-1, C-13, and (SiNMR)-Si-29 spectroscopy, as well as MALDI-TOF mass spectrometry. The assignment of the diadducts was further corroborated by converting each individual diadduct into triadduct(s), the structure of which is controlled by the symmetry of the precursor. Except for the C-3v triadduct, they can all be prepared in synthetically useful quantities. The presence of two types of highly reactive and mutually orthogonal functional groups facilitates further modification into complex nanostructures and composite materials. These unique regioisomers provide a versatile platform for constructing giant molecules and Janus silsesquioxanes.; National High-Tech R & D (863) Program for Young Scholars [2015AA020941]; National Natural Science Foundation of China [21474003, 91427304]; 1000 Plan (Youth); SCI(E); EI; PubMed; ARTICLE; wenbin@pku.edu.cn; 43; 15246-15255; 21
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/415707]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Wang, Xiao-Man,Guo, Qing-Yun,Han, Shuai-Yuan,et al. Stochastic/Controlled Symmetry Breaking of the T-8-POSS Cages toward Multifunctional Regioisomeric Nanobuilding Blocks[J]. CHEMISTRY-A EUROPEAN JOURNAL,2015.
APA	Wang, Xiao-Man.,Guo, Qing-Yun.,Han, Shuai-Yuan.,Wang, Jing-Yi.,Han, Di.,...&Zhang, Wen-Bin.(2015).Stochastic/Controlled Symmetry Breaking of the T-8-POSS Cages toward Multifunctional Regioisomeric Nanobuilding Blocks.CHEMISTRY-A EUROPEAN JOURNAL.
MLA	Wang, Xiao-Man,et al."Stochastic/Controlled Symmetry Breaking of the T-8-POSS Cages toward Multifunctional Regioisomeric Nanobuilding Blocks".CHEMISTRY-A EUROPEAN JOURNAL (2015).