Dendritic sidegroups as three-dimensional barriers to aggregation quenching of conjugated polymer fluorescence

被引：144

作者：

Jakubiak, R

Bao, Z

Rothberg, L ^{[1
]}

机构：

[1] Univ Rochester, Dept Chem, Rochester, NY 14627 USA

[2] Univ Rochester, NSF, Ctr Photoinduced Charge Transfer, Rochester, NY 14627 USA

[3] Lucent Technol, Bell Labs, Murray Hill, NJ 07974 USA

来源：

SYNTHETIC METALS | 2000年 / 114卷 / 01期

关键词：

dendritic sidegroups; three-dimensional barriers; conjugated polymer fluorescence;

D O I：

10.1016/S0379-6779(00)00225-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study the photophysics of poly-phenylenevinylene (PPV) polymers with large dendritic sidegroups under both isolated chain and aggregated chain conditions. Aggregation causes a substantial reduction in photoluminescence (PL) quantum yield but that decrease is ameliorated by the attachment of an additional generation of dendron to the PPV backbone. Three-dimensional separation of chromophores can be achieved with these sidegroups and the formation of nearly nan-emissive interchain excitations leads to a factor of four enhancements in solid-state PL. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：61 / 64

页数：4

共 22 条

[1] Poly(phenylenevinylene)s with dendritic side chains: Synthesis, self-ordering, and liquid crystalline properties
Bao, ZN
Amundson, KR
Lovinger, AJ
[J]. MACROMOLECULES, 1998, 31 (24) : 8647 - 8649
[2] Photoluminescence in pyridine-based polymers: Role of aggregates
Blatchford, JW
Jessen, SW
Lin, LB
Gustafson, TL
Fu, DK
Wang, HL
Swager, TM
MacDiarmid, AG
Epstein, AJ
[J]. PHYSICAL REVIEW B, 1996, 54 (13): : 9180 - 9189
[3] Bu''nau G. v., 1970, RANG DALESPHARMACOLO, V74, P1294, DOI [10.1002/bbpc.19700741223, DOI 10.1002/BBPC.19700741223]
[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] Campbell AJ, 1998, MACROMOL CHEM PHYS, V199, P109, DOI 10.1002/(SICI)1521-3935(19980101)199:1<109::AID-MACP109>3.0.CO
[6] 2-N
[7] Fluorescence quantum yield of rhodamine 6G in ethanol as a function of concentration using thermal lens spectrometry
Fischer, M
Georges, J
[J]. CHEMICAL PHYSICS LETTERS, 1996, 260 (1-2) : 115 - 118
[8] PHOTOEXCITATION IN CONJUGATED POLYMERS
FRIEND, RH
BRADLEY, DDC
TOWNSEND, PD
[J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS, 1987, 20 (11) : 1367 - 1384
[9] Evidence of aggregate formation for 2,5-dialkylpoly(p-phenyleneethynylenes) in solution and thin films
Halkyard, CE
Rampey, ME
Kloppenburg, L
Studer-Martinez, SL
Bunz, UHF
[J]. MACROMOLECULES, 1998, 31 (25) : 8655 - 8659
[10] PREPARATION OF POLYMERS WITH CONTROLLED MOLECULAR ARCHITECTURE - A NEW CONVERGENT APPROACH TO DENDRITIC MACROMOLECULES
HAWKER, CJ
FRECHET, JMJ
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1990, 112 (21) : 7638 - 7647

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