Oligothiophene-functionalized CdSe nanocrystals: preparation and electrochemical properties

被引：13

作者：

Aldakov, Dmitry ^{[1
]}

Querner, Claudia ^{[1
]}

Kervella, Yann ^{[1
]}

Jousselme, Bruno ^{[1
]}

Demadrille, Renaud ^{[1
]}

Rossitto, Emanuela ^{[1
]}

Reiss, Peter ^{[1
]}

Pron, Adam ^{[1
]}

机构：

[1] Univ Grenoble 1, DSM, DRFMC, SPrAM,UMR 5819,CEA,CNRS,LEMOH CEA Grenoble, F-38054 Grenoble, France

来源：

MICROCHIMICA ACTA | 2008年 / 160卷 / 03期

关键词：

electrochemistry; semiconductor nanocrystals; oligothiophenes; surface functionalization; cyclic voltammetry;

D O I：

10.1007/s00604-007-0735-x

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The preparation of new molecular hybrids consisting of CdSe semiconductor nanocrystals, surface-functionalized with conductive and electrochemically active oligothiophene ligands, is described. Specially synthesized aniline-terminated oligoalkylthiophenes containing one, two, or four thiophene units were used for the grafting on CdSe nanocrystals, previously surface-functionalized with 4-formyldithiobenzoate. The electrochemical activity of both the inorganic and the organic parts of the hybrid was investigated by cyclic voltammetry. The oxidative doping of the organic part of the hybrid is irreversible, contrary to the case of the "free" non-grafted ligand which shows reversible doping. Furthermore, the electrochemical doping of the surface ligands, occurring at lower potentials than the oxidation of the nanocrystals, perturbs the latter process via charging of the ligands followed by slow relaxation processes.

引用

页码：335 / 344

页数：10

共 28 条

[1] SYNTHESIS AND STRUCTURAL CHARACTERIZATION OF ALKYL OLIGOTHIOPHENES - THE 1ST ISOMERICALLY PURE DIALKYLSEXITHIOPHENE [J].