Guest-size determining the selective binding modes of cucurbit[8]uril, electron-rich guests and N-alkyl-N′-methyl-4,4′-bipyridinium

被引：4

作者：

Jiang, Song ^{[1
]}

Yang, Xiaona ^{[1
]}

Yang, Chunxue ^{[1
]}

Tong, Mingqiong ^{[1
]}

Zou, Dapeng ^{[1
]}

Wu, Yangjie ^{[1
]}

机构：

[1] Zhengzhou Univ, Coll Chem & Mol Engn, Zhengzhou 450052, Henan, Peoples R China

来源：

TETRAHEDRON LETTERS | 2013年 / 54卷 / 13期

关键词：

Cucurbit[8]uril; Viologen derivatives; Self-assembly; Charge transfer; Supramolecular chemistry; U-SHAPED CONFORMATION; CHARGE-TRANSFER COMPLEX; HOST; CUCURBITURIL; INCLUSION;

D O I：

10.1016/j.tetlet.2012.12.120

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

The supramolecular self-assembly in aqueous solution of N-alkyl-N'-methyl-4,4'-bipyridinium ([CmMV](2+)) (m = 4, 5, 7, 12), 1,4-dihydroxybenzene (HB), and 2,6-dihydroxynaphthalene (HN) with cucurbit[8]uril (CB[8]) was investigated with H-1 NMR, NOESY, ESI-MS, and UV-vis spectroscopy. It has been reported that these three compounds ([CmMV](2+) (m = 12), HN and CB[8]) can form 1:1:1 inclusion complex with the C12 alkyl chain of [C12MV](2+) being present outside the cavity. Here we report that [CmMV](2+) (m >= 5) HB, and CB[8] can form a new supramolecular self-assembly binding mode with the alkyl chain being present inside the cavity. (c) 2013 Elsevier Ltd. All rights reserved.

引用

页码：1638 / 1644

页数：7