EQCM analysis of the alkali metal ion coordination properties of novel poly (thiophene)s 3,4-functionalized with crown-ether moieties

被引：30

作者：

Berlin, A

Zotti, G ^{[1
]}

Zecchin, S

Schiavon, G

机构：

[1] Ist CNR Energet & Interfasi, CO Stati Uniti 4, I-35127 Padua, Italy

[2] Ist CNR Sci & Tecnol Molecolari, I-20133 Milan, Italy

来源：

SYNTHETIC METALS | 2002年 / 131卷 / 1-3期

关键词：

crown-ether; polythiophenes; conducting polymers; electrochemistry;

D O I：

10.1016/S0379-6779(02)00176-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

New thiophenes carrying 18-crown-6-ether ring directly linked to the 3- and 4-positions of the thiophene ring were synthesized and polymerized by anodic coupling in acetonitrile. The polymers were characterized by cyclic voltammetry (CV), UV-Vis and FTIR spectroscopy, matrix-assisted laser desorption ionization (MALDI) mass spectroscopy and in situ conductivity. Electrochemical quartz crystal microbalance (EQCM) analysis of the alkali metal coordination ability of the 18-crown-6-ether polymer films in acetonitrile has evidenced that the coordination constants (e.g. 20-80 M-1 for Na+) are ca. two orders of magnitude lower than those of polythiophenes bearing the crown substituents pendant from the polythiophene backbone. The result has been ascribed both to electronic and solid-state effects of the conjugated polythiophene chains. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：149 / 160

页数：12

共 25 条

[1] n- and p-doped poly(3,4-ethylenedioxythiophene): Two electronically conducting states of the polymer [J].