INTERCHAIN EXCITATIONS IN CONJUGATED POLYMERS

被引:406
作者
YAN, M
ROTHBERG, LJ
KWOCK, EW
MILLER, TM
机构
[1] AT and T Bell Laboratories, Murray Hill, NJ 07974
关键词
D O I
10.1103/PhysRevLett.75.1992
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The luminescence quantum yield is dramatically increased upon going from films to dilute blends or solutions of a soluble phenylenevinylene polymer. Nevertheless, direct measurements of the decay dynamics of the emissive excitons show that their lifetimes are not very different. Separation of the polymer chains suppresses interchain exciton formation, which otherwise competes favorably with the generation of emissive intrachain excitons in films. We discuss the consequences for the design of polymeric systems for optoelectronics.
引用
收藏
页码:1992 / 1995
页数:4
相关论文
共 27 条
  • [21] PHOTOINDUCED ABSORPTION FROM TRIPLET EXCITATIONS IN POLY(2-METHOXY, 5-(2'-ETHYL-HEXYLOXY)-P-PHENYLENE VINYLENE) ORIENTED BY GEL-PROCESSING IN POLYETHYLENE
    SMILOWITZ, L
    HEEGER, AJ
    [J]. SYNTHETIC METALS, 1992, 48 (02) : 193 - 202
  • [22] TIME-RESOLVED PHOTOLUMINESCENCE FROM POLY[2-METHOXY, 5-(2'-ETHYL-HEXYLOXY)-P-PHENYLENE-VINYLENE] - SOLUTIONS, GELS, FILMS, AND BLENDS
    SMILOWITZ, L
    HAYS, A
    HEEGER, AJ
    WANG, G
    BOWERS, JE
    [J]. JOURNAL OF CHEMICAL PHYSICS, 1993, 98 (08) : 6504 - 6509
  • [23] Turro, 1991, MODERN MOL PHOTOCHEM
  • [24] PICOSECOND PHOTOINDUCED DICHROISM IN TRANS-(CH)X - DIRECT MEASUREMENT OF SOLITON DIFFUSION
    VARDENY, Z
    STRAIT, J
    MOSES, D
    CHUNG, TC
    HEEGER, AJ
    [J]. PHYSICAL REVIEW LETTERS, 1982, 49 (22) : 1657 - 1660
  • [25] Wudl F., 1993, J AM CHEM SOC, DOI DOI 10.1021/JA00068A005, Patent No. 5189136
  • [26] SPATIALLY INDIRECT EXCITONS AS PRIMARY PHOTOEXCITATIONS IN CONJUGATED POLYMERS
    YAN, M
    ROTHBERG, LJ
    PAPADIMITRAKOPOULOS, F
    GALVIN, ME
    MILLER, TM
    [J]. PHYSICAL REVIEW LETTERS, 1994, 72 (07) : 1104 - 1107
  • [27] DEFECT QUENCHING OF CONJUGATED POLYMER LUMINESCENCE
    YAN, M
    ROTHBERG, LJ
    PAPADIMITRAKOPOULOS, F
    GALVIN, ME
    MILLER, TM
    [J]. PHYSICAL REVIEW LETTERS, 1994, 73 (05) : 744 - 747