Time domain investigation of the intrachain vibrational dynamics of a prototypical light-emitting conjugated polymer

被引：56

作者：

Lanzani, G

Cerullo, G

Brabec, C

Sariciftci, NS

机构：

[1] Politecn Milan, Dipartimento Fis, INFM, Natl Lab Ultrafast & Ultraintense Opt Sci, I-20133 Milan, Italy

[2] Siemens AG, Innovat Elect CT MM1, D-91052 Erlangen, Germany

[3] Johannes Kepler UnivLinz, Inst Organ Solar Cells LIOS, A-4040 Linz, Austria

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.90.047402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Coherent nuclear motion of the carbon backbone is monitored in real time in substituted poly(phenylene)-vinylene in both excited and ground electronic state using sub-10-fs light pulses. Characteristic features of the intrachain vibrational dynamics are obtained. We observe vibrational dephasing in the excited state within 1 ps (time constant T(2e)approximate to300 fs). These findings are in agreement with the molecular picture for photoexcitation in conjugated polymers.

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页数：4

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