Dual resonance fluorescence of polydiacetylene chains isolated in their crystalline monomer matrix

被引：61

作者：

Lecuiller, R

Berrehar, J

Lapersonne-Meyer, C

Schott, M

机构：

[1] Univ Paris 07, Phys Solides Grp, UMR 7588, F-75251 Paris 05, France

[2] Univ Paris 06, Phys Solides Grp, UMR 7588, F-75251 Paris, France

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 18期

关键词：

D O I：

10.1103/PhysRevLett.80.4068

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Fluorescence of isolated polydiacetylene chains in their monomer crystal is studied. Two different resonant emissions are observed. One is the weak emission of the free exciton at 1.9 eV at 10 K. The other is a very narrow (1.5 meV FWHM) intense resonance emission line at 2.28 eV and originates from a small fraction of chains with different conformation. Instantaneous exciton self-trapping is inconsistent with these emissions. The large difference in quantum yields (factor >10(2)) indicates that electronic relaxation of these chains is very sensitive to changes in chain conformation.

引用

页码：4068 / 4071

页数：4

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