Exciton spectroscopy of red polydiacetylene chains in single crystals

被引：21

作者：

Barisien, T.

Legrand, L.

Weiser, G.

Deschamps, J.

Balog, M.

Boury, B.

Dutremez, S. G.

Schott, M.

机构：

[1] Univ Paris 06, CNRS, Inst Nanosci Paris, UMR7588, F-75015 Paris, France

[2] Univ Paris 07, F-75015 Paris, France

[3] Univ Marburg, Fac Phys, D-35037 Marburg, Germany

[4] Univ Marburg, Ctr Mat Sci, D-35037 Marburg, Germany

[5] Univ Montpellier 2, Inst Charles Garhardt Montpellier, CNRS UM2 ENSCM UM1, UMR 5253, F-34095 Montpellier, France

来源：

CHEMICAL PHYSICS LETTERS | 2007年 / 444卷 / 4-6期

关键词：

D O I：

10.1016/j.cplett.2007.07.031

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：

The absorption and emission properties of excitons are investigated in a pure 'red' phase of luminescent polydiacetylene wires. The values of the binding energy (E-b = 0.556 eV) and Bohr radius (r similar to 14 angstrom) make the 'red' exciton similar to the one of the extensively studied 'blue' phase, so the conformational modifications which lead to a reordering of excited states and luminescent emission do not strongly affect the exciton structure. The opening of a thermally activated non radiative channel leads to an efficient quenching of the intense luminescence observed at low temperature. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：309 / 313

页数：5

共 26 条

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