Relaxation processes in electronic states of conjugated polymers studied via spectral hole-burning at low temperature

被引：7

作者：

Romanovskii, YV

Bässler, H

Scherf, U

机构：

[1] Univ Marburg, Inst Phys Chem, D-35032 Marburg, Germany

[2] RAS, Inst Spect, Troitsk 142190, Russia

[3] Univ Potsdam, D-14476 Golm, Germany

来源：

CHEMICAL PHYSICS LETTERS | 2004年 / 383卷 / 1-2期

关键词：

D O I：

10.1016/j.cplett.2003.11.012

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：

Persistent and transient hole-burning (HB) at 4.2 K have been applied to study the intrinsic properties of electronic excitations of a ladder type pi-conjugated poly(para-phenylene) in solutions. A narrow spectral hole less than I meV wide has been detected. The dependencies of the HB efficiency on the burn dose and wavelength, on doping the samples by electron scavenger are interpreted in terms of a photo reaction related to the two-level systems - specific low energy excitations in amorphous materials. In transient HB an additional hole broadening was observed which stems from the triplet energy transfer under conditions of lack of correlation of site energies of the singlet and triplet states of chromophores. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：89 / 94

页数：6

共 23 条

[1] OPTICAL ADDRESSING AND SWITCHING OF WATER-MOLECULES IN HOLE-BURNING SYSTEMS - A TLS MODEL SYSTEM [J].