Temperature dependent vibronic structures in the emission spectra of poly(p-phenylene vinylene)

被引：2

作者：

Borges, CAM ^{[1
]}

Marletta, A ^{[1
]}

Faria, RM ^{[1
]}

Guimaraes, FEG ^{[1
]}

机构：

[1] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil

来源：

MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 2002年 / 374卷

关键词：

Franck-Condon analysis; PPV; site selective luminescence; electron-phonon coupling;

D O I：

10.1080/10587250210462

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We studied the effect of temperature on electron-phonon coupling in the emission spectra of poly(p-phenylene vinylene), PPV, prepared by self-assembly methodology. Site selective luminescence spectroscopy (SSE) was employed to resolve the fine structures of the vibracional modes. Using Franck-Condon analysis, the experimental vibronic progressions of PPV can be well described by three effective, inhomogeneous broadened vibrational modes with energies at 330, 1163 and 1550 cm(-1). As the temperature increases the electron-phonon coupling for the 1550 cm(-1) mode remains constant while, for the other two modes, the S factor increases.

引用

页码：427 / 432

页数：6

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