SOLITON PAIR CHARGE STORAGE IN DOPED POLYENE MOLECULES - EVIDENCE FROM PHOTOELECTRON-SPECTROSCOPY STUDIES

被引：55

作者：

LOGDLUND, M

DANNETUN, P

STAFSTROM, S

SALANECK, WR

RAMSEY, MG

SPANGLER, CW

FREDRIKSSON, C

BREDAS, JL

机构：

[1] GRAZ UNIV,INST EXPTL PHYS,A-8010 GRAZ,AUSTRIA

[2] NO ILLINOIS UNIV,DEPT CHEM,DE KALB,IL 60115

[3] UNIV MONS HAINAUT,SERV CHIM MAT NOUVEAUX,B-7000 MONS,BELGIUM

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 70卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.70.970

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The pi-electronic structural changes in a polyene molecule containing seven double bonds, alpha,omega-diphenyltetradecaheptaene (DP7), have been studied upon gradually doping with sodium, using x-ray and ultraviolet photoelectron spectroscopies. The spectra are interpreted with the help of detailed quantum chemical calculations. Analysis of the evolution of the XPS and UPS spectra as a function of doping with sodium indicates that the extra charges are stored in the form of two charged solitons on the polyene part of the molecules, which results in two new energy levels in the originally forbidden energy gap.

引用

页码：970 / 973

页数：4

共 19 条

[1] THE ROLE OF SOLITONS IN THE 1ST BU EXCITED-STATE OF POLYENE CHAINS - FROM SHORT POLYENES TO POLYACETYLENE [J].