Photoelectrical properties in poly(alkyl/alkoxy-terthiophenes): dependence on the alkyl-chain length

被引：10

作者：

Casalbore-Miceli, G

Camaioni, N

Gallazzi, MC

Albertin, L

Fichera, AM

Geri, A

Girotto, EM

机构：

[1] Ist Fotochim & Radiaz Alta Energia, I-40129 Bologna, Italy

[2] Politecn Milan, Dipartimento Chim Ind & Ingn Chim, I-20133 Milan, Italy

[3] CNR, Ctr Studio Fis Macromol, I-40126 Bologna, Italy

[4] Univ Nacl Estadual Sao Paulo, Inst Quim Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil

来源：

SYNTHETIC METALS | 2001年 / 125卷 / 03期

基金：

巴西圣保罗研究基金会;

关键词：

poly(alkoxy-alkyl-terthiophenes); electropolymerisation; photoelectrical properties;

D O I：

10.1016/S0379-6779(01)00488-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The length of the alkyl-groups affects both the spectrophotometric and the electrochemical properties of poly(alkoxy-alkyl-terthiophenes) films prepared by cyclic voltammetry. The maximum absorbance shifts towards higher wavelengths and the oxidation peak towards cathodic potentials as the alkyl-chain length increases. Moreover, it was found that the photoelectrical performance exhibited by poly(alkoxy-alkyl-terthiophenes)-based devices improved from poly(4,4 " -dipenthoxy-3-dodecyl-2,2':5',2 " -terthiophene) to poly(4,4 " -dipenthoxy-3'-hexyl-2,2':5',2 " -terthiophene), probably due to an increasing hopping mobility, and remained constant or somewhat decreased by going from poly(4,4 " -dipenthoxy-3'-hexyl-2,2':5,2 " -terthiophene) to poly(4,4 " -dimethoxy-3'-methyl-2,2':5',2 " -terthiophene) possibly for a lower planarity of polythiophene chains. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：307 / 311

页数：5

共 16 条

[1]

[Anonymous], HDB ORGANIC CONDUCTI

[2]

[Anonymous], HDB OLIGOTHIOPHENES

[3] Photoelectrical characterization of Schottky junctions between poly(4h-cyclopenta[2,1-b:3,4-b']dithiophene) and aluminium:: effect of hexadecyl groups in 4 position [J].