FLUORESCENCE AND TOPOLOGICAL GAP OF CONJUGATED PHENYLENE POLYMERS

被引：86

作者：

SOOS, ZG

ETEMAD, S

GALVAO, DS

RAMASESHA, S

机构：

[1] INDIAN INST SCI, SOLID STATE & STRUCT CHEM UNIT, BANGALORE 560012, KARNATAKA, INDIA

[2] BELL COMMUN RES INC, RED BANK, NJ 07701 USA

[3] UNIV ESTADUAL CAMPINAS, DEPT FIS APLICADA, BR-13081 CAMPINAS, SP, BRAZIL

来源：

CHEMICAL PHYSICS LETTERS | 1992年 / 194卷 / 4-6期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0009-2614(92)86061-L

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：

We propose that strong fluorescence in conjugated polymers requires a dipole-allowed state to be the lowest singlet. Huckel theory for para-conjugated phenyl rings yields an extended, topologically one-dimensional pi-system with increased alternation, states localized on each ring, and charge-transfer excitations between them. Exact Pariser-Parr-Pople results and molecular spectra for oligomers support a topological contribution and a lowest dipole-allowed singlet in phenylene polymers.

引用

页码：341 / 346

页数：6

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[2]

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