Rotaxanes with a calix[6]arene wheel and axles of different length. Synthesis, characterization, and photophysical and electrochemical properties

被引：38

作者：

Arduini, Arturo ^{[1
]}

Bussolati, Rocco ^{[1
]}

Credi, Alberto ^{[2
]}

Pochini, Andrea ^{[1
]}

Secchi, Andrea ^{[1
]}

Silvi, Serena ^{[2
]}

Venturi, Margherita ^{[2
]}

机构：

[1] Univ Parma, Dipartimento Chim Organ & Ind, I-43100 Parma, Italy

[2] Univ Bologna, Dipartimento Chim G Ciamician, I-40126 Bologna, Italy

来源：

TETRAHEDRON | 2008年 / 64卷 / 36期

关键词：

4,4 '-bipyridinium; electrochemistry; molecular machine; photochemistry; supramolecular chemistry;

D O I：

10.1016/j.tet.2008.05.123

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

We have synthesized a series of three rotaxanes constituted of a calix[6]arene wheel and a 4,4'-b:pyridinium unit on the axle, which differ in the length of the two aliphatic chains that connect the central bipyridinium unit With the two terminal stoppers. We have investigated the photophysical and electrochemical properties of these systems and of suitable model compounds in two prototypical solvents, namely, acetonitrile and methylene chloride. Our results show that these rotaxanes are characterized by a complex pattern of intercomponent interactions whose strength can be influenced by the length of the axle as well as the nature of the solvent. (C) 2008 Elsevier Ltd. All rights reseived.

引用

页码：8279 / 8286

页数：8

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