Tetranuclear Uranyl Polyrotaxanes: Preferred Selectivity toward Uranyl Tetramer for Stabilizing a Flexible Polyrotaxane Chain Exhibiting Weakened Supramolecular Inclusion

	Tetranuclear Uranyl Polyrotaxanes: Preferred Selectivity toward Uranyl Tetramer for Stabilizing a Flexible Polyrotaxane Chain Exhibiting Weakened Supramolecular Inclusion
	Mei L(梅雷); Wang L(王琳); Zhao YL(赵宇亮); Chai ZF(柴之芳); Shi WQ(石伟群); Mei, L; Wang, L; Liu, CM; Zhao, YL; Chai, ZF
刊名	CHEMISTRY-A EUROPEAN JOURNAL
	2015
卷号	21 期号:28 页码:10226-10235
关键词	chain structures organic-inorganic hybrid composites rotaxanes supramolecular chemistry uranium
通讯作者	柴之芳 ; 石伟群
英文摘要	Introduction of mechanically interlocked components into actinide-based metal-organic materials such as polyrotaxanes will generate an entirely new type of inorganic-organic hybrid materials showing more supramolecular encapsulation-based dynamics. In this work, tetranuclear uranyl-directed polyrotaxanes (UO2)(4)O-2-C5A3-CB6 (1) and (UO2)(4)O-2-C6A3-CB6 (2), which are the first actinide pseudorotaxanes with high-nuclearity uranium centers, were obtained through systematic extension of the string spacer in pseudorotaxane ligands from 1,4-butylene (C4) to 1,5-pentylene (C5) and 1,6-hexylene (C6). Both of the as-synthesized tetranuclear uranyl polyrotaxanes were structurally characterized and analyzed. Considering the structure of UO2-C4A3-CB6 and the 1,4-butylene string spacer, the preference for the uranyl tetramer may be related to the configurational inversion of the pseudorotaxane ligands from trans mode to cis mode on coordination to the uranyl center. Detailed structural analysis suggests that the length of the stretched string molecules for CB6-encapsulated pseudorotaxanes has remarkable effect on the supramolecular inclusion interactions and the configurations of pseudorotaxanes, and should be responsible for the configurational inversion of pseudorotaxane spacers and subsequent distinct changes of the uranyl building units and geometric structures.
学科主题	Chemistry
类目[WOS]	Chemistry, Multidisciplinary
收录类别	SCI ; EI ; CA
WOS记录号	WOS:000357026700036
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/228608]
专题	高能物理研究所_院士高能物理研究所_多学科研究中心
推荐引用方式 GB/T 7714	Mei L,Wang L,Zhao YL,et al. Tetranuclear Uranyl Polyrotaxanes: Preferred Selectivity toward Uranyl Tetramer for Stabilizing a Flexible Polyrotaxane Chain Exhibiting Weakened Supramolecular Inclusion[J]. CHEMISTRY-A EUROPEAN JOURNAL,2015,21(28):10226-10235.
APA	梅雷.,王琳.,赵宇亮.,柴之芳.,石伟群.,...&Shi, WQ.(2015).Tetranuclear Uranyl Polyrotaxanes: Preferred Selectivity toward Uranyl Tetramer for Stabilizing a Flexible Polyrotaxane Chain Exhibiting Weakened Supramolecular Inclusion.CHEMISTRY-A EUROPEAN JOURNAL,21(28),10226-10235.
MLA	梅雷,et al."Tetranuclear Uranyl Polyrotaxanes: Preferred Selectivity toward Uranyl Tetramer for Stabilizing a Flexible Polyrotaxane Chain Exhibiting Weakened Supramolecular Inclusion".CHEMISTRY-A EUROPEAN JOURNAL 21.28(2015):10226-10235.