EXCITED-STATES IN PPP-TYPE LADDERPOLYMERS PROBED BY PHOTOINDUCED ABSORPTION

被引：31

作者：

GRAUPNER, W ^{[1
]}

EDER, S ^{[1
]}

MAURI, M ^{[1
]}

LEISING, G ^{[1
]}

SCHERF, U ^{[1
]}

机构：

[1] MAX PLANCK INST POLYMER RES,D-55128 MAINZ,GERMANY

来源：

SYNTHETIC METALS | 1995年 / 69卷 / 1-3期

关键词：

D O I：

10.1016/0379-6779(94)02511-V

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present photoinduced absorption (PIA) measurements done on a planarized form of poly(para-phenylene) (PPP). Macromolecules of different degree of polymerization and with a chemical modification at the bridge, connecting the benzene rings of the PPP-backbone, are investigated. There is dear evidence that the quasi steady state PIA signal in the near infrared vanishes with increasing intrachain order. We discuss the stabilization of the photogenerated defects. The nature of the observed states is described based on their characteristic electronic absorptions, their lifetime and their temperature dependence.

引用

页码：419 / 422

页数：4

共 27 条

[1] IDENTIFYING LOWEST EXCITED SINGLET STATE OF BIPHENYL AND ITS ANALOGS [J].