A chiroptical study of chiral Λ- and X- type oligothiophenes toward modelling the interchain interactions of chiral conjugated polymers

被引：25

作者：

Cornelis, David ^{[1
]}

Peeters, Helmuth ^{[1
]}

Zrig, Samia ^{[1
,2
]}

Andrioletti, Bruno ^{[2
]}

Rose, Eric ^{[2
]}

Verbiest, Thierry ^{[1
]}

Koeckelberghs, Guy ^{[1
]}

机构：

[1] Katholieke Univ Leuven, Lab Mol Elect & Photon, B-3001 Heverlee, Belgium

[2] Univ Paris 06, CNRS, UMR 7611, Chim Organ Lab,Inst Chim Mol FR 2769, F-75252 Paris 05, France

来源：

CHEMISTRY OF MATERIALS | 2008年 / 20卷 / 06期

关键词：

D O I：

10.1021/cm702875p

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A variety of chiral Lambda-type and X-type oligothiophenes (MDC 1-10) was synthesized and studied by means of UV-vis and CD spectroscopy in order to model the chiral interchain interactions of conjugated polymers with optically Active side chains in both neutral and oxidized state. It was found that, within the class of chiral Lambda-type oligothiophenes, the interchain chiral exciton coupling was only present when using an electronwithdrawing imine linkage between the oligothiophene and the chiral unit (MDC 7-9). Together with the observed decrease in g-value (dissymmetry factor for absorption) by extending the oligothiophene moiety, these linkage and elongation restrictions impose crucial drawbacks on chiral Lambda-type oligothiophenes as study model in both neutral and oxidized state. Therefore, a new chiral X-type oligothiophene (MDC 10) was developed that combines chiral exciton coupling in neutral state with the additional ability of oxidation.

引用

页码：2133 / 2143

页数：11

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