EXCIMERS AND EXCIPLEXES OF CONJUGATED POLYMERS

被引:1279
作者
JENEKHE, SA [1 ]
OSAHENI, JA [1 ]
机构
[1] UNIV ROCHESTER,CTR PHOTOINDUCED CHARGE TRANSFER,ROCHESTER,NY 14627
关键词
D O I
10.1126/science.265.5173.765
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Observations of intermolecular excimers in several pi-conjugated polymers and exciplexes of these polymers with tris(p-tolyl)amine are reported. It is shown that the luminescence of conjugated polymer thin films originates from excimer emission and that the generally low quantum yield is the result of self-quenching. Thus, in sufficiently dilute solution, the ''single-chain'' emission has a quantum yield of unity. Exciplex luminescence and exciplex-mediated charge photogeneration have much higher quantum yields than the excimer-mediated photophysical processes. These results provide a basis for understanding and controlling the photophysics of conjugated polymers in terms of supramolecular structure and morphology.
引用
收藏
页码:765 / 768
页数:4
相关论文
共 36 条
[11]   A QUANTITATIVE RELATIONSHIP BETWEEN RADIATIVE AND NONRADIATIVE ELECTRON-TRANSFER IN RADICAL-ION PAIRS [J].
GOULD, IR ;
NOUKAKIS, D ;
GOODMAN, JL ;
YOUNG, RH ;
FARID, S .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1993, 115 (09) :3830-3831
[12]  
GUILBAULT GG, 1990, PRACTICAL FLUORESCEN, pCH1
[13]  
Guillet J., 1985, POLYM PHOTOPHYSICS P
[14]   FLEXIBLE LIGHT-EMITTING-DIODES MADE FROM SOLUBLE CONDUCTING POLYMERS [J].
GUSTAFSSON, G ;
CAO, Y ;
TREACY, GM ;
KLAVETTER, F ;
COLANERI, N ;
HEEGER, AJ .
NATURE, 1992, 357 (6378) :477-479
[15]   SOLITONS IN CONDUCTING POLYMERS [J].
HEEGER, AJ ;
KIVELSON, S ;
SCHRIEFFER, JR ;
SU, WP .
REVIEWS OF MODERN PHYSICS, 1988, 60 (03) :781-850
[16]   ASSIGNMENT OF THE PICOSECOND PHOTOINDUCED ABSORPTION IN PHENYLENE VINYLENE POLYMERS [J].
HSU, JWP ;
YAN, M ;
JEDJU, TM ;
ROTHBERG, LJ ;
HSIEH, BR .
PHYSICAL REVIEW B, 1994, 49 (01) :712-715
[17]  
JENEKHE SA, 1994, B AM PHYS SOC, V39, P505
[18]  
JENEKHE SA, 1992, MACROMOLECULAR HOST
[19]  
JENEKHE SA, UNPUB
[20]  
MARDER SR, 1991, MATERIALS NONLINEAR