Characteristics of twisted intramolecular charge-transfer state in a hyperbranched conjugated polymer

被引：2
作者：
Yang, JL [1 ]
He, QG [1 ]
Lin, HZ [1 ]
Fan, JJ [1 ]
Bai, FL [1 ]
机构：
[1] Chinese Acad Sci, Ctr Mol Sci, Inst Chem, Lab Organ Solids, Beijing 100080, Peoples R China
来源：
MACROMOLECULAR RAPID COMMUNICATIONS | 2001年 / 22卷 / 14期
关键词：
D O I：
10.1002/1521-3927(20011001)22:14<1152::AID-MARC1152>3.0.CO;2-A
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
A hyperbranched conjugated polymer functionalized in periphery with NN-dimethylaniline was synthesized and characterized. Solvatochromic shifts in both absorption and fluorescence spectra, the effects of solvent polarities on the fluorescence quantum yield and fluorescence lifetime were investigated to probe the formation of an intramolecular charge transfer (ICT) state. The peak position of the emission band arising from the ICT state is red-shifted, and the fluorescence quantum efficiency of the polymer decreases with increasing polarity of the solvents.
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收藏
页码：1152 / 1157
页数：6
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共 27 条
  • [1] Influence of the attachment of chromophores to a polymer chain on their twisted intramolecular charge-transfer state in dilute solution
    Bajorek, A
    Paczkowski, J
    [J]. MACROMOLECULES, 1998, 31 (01) : 86 - 95
  • [2] BERLMAN IB, 1971, HDB FLUORESCENCE SPE, P323
  • [3] Photophysical characteristics of diphenyl carbazide-laser flash photolysis and fluorescence studies
    Bhasikuttan, AC
    Palit, DK
    Sapre, AV
    Mittal, JP
    [J]. CHEMICAL PHYSICS LETTERS, 2000, 316 (1-2) : 67 - 74
  • [4] LIGHT-EMITTING-DIODES BASED ON CONJUGATED POLYMERS
    BURROUGHES, JH
    BRADLEY, DDC
    BROWN, AR
    MARKS, RN
    MACKAY, K
    FRIEND, RH
    BURN, PL
    HOLMES, AB
    [J]. NATURE, 1990, 347 (6293) : 539 - 541
  • [5] Photoinduced intramolecular charge-transfer state of p-dimethylaminobenzoic acid in CdS and TiO2 colloid solutions
    Choi, J
    Yeo, K
    Yoon, M
    Lee, SJ
    Kim, K
    [J]. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2000, 132 (1-2) : 105 - 114
  • [6] MOLECULAR PHOSPHORESCENCE ENHANCEMENT VIA TUNNELING THROUGH PROTON-TRANSFER POTENTIALS
    GORMIN, D
    HELDT, J
    KASHA, M
    [J]. JOURNAL OF PHYSICAL CHEMISTRY, 1990, 94 (03) : 1185 - 1189
  • [7] Site-selective fluorescence studies of poly(p-phenylene vinylene) and its derivatives
    Harrison, NT
    Baigent, DR
    Samuel, IDW
    Friend, RH
    Grimsdale, AC
    Moratti, SC
    Holmes, AB
    [J]. PHYSICAL REVIEW B, 1996, 53 (23): : 15815 - 15822
  • [8] Making sense of polymer-based biosensors
    Heeger, PS
    Heeger, AJ
    [J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1999, 96 (22) : 12219 - 12221
  • [9] THE DYNAMICS OF BARRIER CROSSINGS IN SOLUTION - THE EFFECT OF A SOLVENT POLARITY-DEPENDENT BARRIER
    HICKS, J
    VANDERSALL, M
    BABAROGIC, Z
    EISENTHAL, KB
    [J]. CHEMICAL PHYSICS LETTERS, 1985, 116 (01) : 18 - 24
  • [10] POLARITY-DEPENDENT BARRIERS AND THE PHOTOISOMERIZATION DYNAMICS OF MOLECULES IN SOLUTION
    HICKS, JM
    VANDERSALL, MT
    SITZMANN, EV
    EISENTHAL, KB
    [J]. CHEMICAL PHYSICS LETTERS, 1987, 135 (4-5) : 413 - 420
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