N-HETEROATOMIC EFFECT ON THE PHOTOPHYSICS OF POLYPHENYL SYSTEM - 2,6-DIPHENYL PYRIDINE

被引：24

作者：

CHAKRAVORTI, S

SARKAR, SK

MALLICK, PK

机构：

[1] VIDYASAGAR COLL,DEPT PHYS,CALCUTTA,INDIA

[2] UNIV BURDWAN GOLAPBAG,DEPT PHYS,BURDWAN 713104,W BENGAL,INDIA

来源：

CHEMICAL PHYSICS LETTERS | 1991年 / 187卷 / 1-2期

关键词：

D O I：

10.1016/0009-2614(91)90490-Z

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：

From the detailed analysis of emission and absorption spectra of 2,6-diphenyl pyridine (DPP), m-terphenyl (MTP) and 2,6-luitidine (LTD) in different solvents, a striking change in absorption and emission characteristics of DPP compared to others could be observed. Consideration of through-space interaction of nonbonding electrons of the N atom and the pi-electrons of the outer rings becomes significant in explaining the dramatic change of absorption and emission character of the title compound in relation to a polyphenyl, MTP. The lowest excited singlet state of DPP is identified as 1L(a), indicating a crossover of states relative to MTP.

引用

页码：93 / 97

页数：5

共 25 条

[1] STRUCTURE TRANSITION IN POLYPHENYL COMPOUNDS .1. CRYSTAL-STRUCTURE OF LOW-TEMPERATURE PHASE OF PARA TERPHENYL AT 113 K [J].