Stochastic model of photodynamics in multichromophoric conjugated polymers

被引:12
作者
Barzykin, AV [1 ]
Tachiya, M [1 ]
机构
[1] Natl Inst Adv Ind Sci & Technol, AIST, Tsukuba, Ibaraki 3058565, Japan
关键词
D O I
10.1021/jp056088q
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A stochastic model of triplet exciton dynamics in multichromophoric conjugated polymers is presented and analyzed in detail, with a focus on the single molecule spectroscopy observables. The model deals with the evolution of a discrete statistical distribution of triplets in isolated polymer molecules. This approach should provide more accurate quantitative information on the dynamic processes involved, as compared to the previously used two-state model which assumes that a conjugated polymer cannot contain more than one triplet. In particular, it allows for determination of the triplet-triplet annihilation rate.
引用
收藏
页码:7068 / 7072
页数:5
相关论文
共 23 条
[1]   Single-molecule spectroscopy of conjugated polymers [J].
Barbara, PF ;
Gesquiere, AJ ;
Park, SJ ;
Lee, YJ .
ACCOUNTS OF CHEMICAL RESEARCH, 2005, 38 (07) :602-610
[2]   Stochastic models of carrier dynamics in single-walled carbon nanotubes [J].
Barzykin, AV ;
Tachiya, M .
PHYSICAL REVIEW B, 2005, 72 (07)
[3]   Single molecule modulation spectroscopy of conjugated polymers [J].
Gesquiere, AJ ;
Lee, YJ ;
Yu, J ;
Barbara, PF .
JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (25) :12366-12371
[4]   Hole-induced quenching of triplet and singlet excitons in conjugated polymers [J].
Gesquiere, AJ ;
Park, SJ ;
Barbara, PF .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2005, 127 (26) :9556-9560
[5]   Molecular-scale interface engineering for polymer light-emitting diodes [J].
Ho, PKH ;
Kim, JS ;
Burroughes, JH ;
Becker, H ;
Li, SFY ;
Brown, TM ;
Cacialli, F ;
Friend, RH .
NATURE, 2000, 404 (6777) :481-484
[6]   Solvent-related conformational changes and aggregation of conjugated polymers studied by single molecule fluorescence spectroscopy [J].
Huser, T ;
Yan, M .
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2001, 144 (01) :43-51
[7]   Singlet-triplet splitting of geminate electron-hole pairs in conjugated polymers -: art. no. 066803 [J].
Kadashchuk, A ;
Vakhnin, A ;
Blonski, I ;
Beljonne, D ;
Shuai, Z ;
Brédas, JL ;
Arkhipov, VI ;
Heremans, P ;
Emelianova, EV ;
Bässler, H .
PHYSICAL REVIEW LETTERS, 2004, 93 (06) :066803-1
[8]   Quantization of multiparticle Auger rates in semiconductor quantum dots [J].
Klimov, VI ;
Mikhailovsky, AA ;
McBranch, DW ;
Leatherdale, CA ;
Bawendi, MG .
SCIENCE, 2000, 287 (5455) :1011-1013
[9]   Triplet-to-singlet exciton formation in poly(p-phenylene-vinylene) light-emitting diodes -: art. no. 036601 [J].
Lin, LC ;
Meng, HF ;
Shy, JT ;
Horng, SF ;
Yu, LS ;
Chen, CH ;
Liaw, HH ;
Huang, CC ;
Peng, KY ;
Chen, SA .
PHYSICAL REVIEW LETTERS, 2003, 90 (03) :4
[10]   Direct exciton quenching in single molecules of MEH-PPV at 77 K [J].
Mirzov, O ;
Cichos, F ;
von Borczyskowski, C ;
Scheblykin, IG .
CHEMICAL PHYSICS LETTERS, 2004, 386 (4-6) :286-290