Origin and stabilization of photoexcitations in conjugated polymers

被引：14

作者：

Graupner, W ^{[1
]}

Eder, S ^{[1
]}

Petritsch, K ^{[1
]}

Leising, G ^{[1
]}

Scherf, U ^{[1
]}

机构：

[1] MAX PLANCK INST POLYMER RES, D-55128 MAINZ, GERMANY

来源：

SYNTHETIC METALS | 1997年 / 84卷 / 1-3期

关键词：

conjugated polymers; photoinduced absorption spectroscopy; photoluminescence; UV-Vis-NIR absorption;

D O I：

10.1016/S0379-6779(97)80839-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report studies on the nature of photoexcitations in onedimensional organic semiconductors using photoluminescence, absorption and photoinduced absorption techniques. The polymers of interest-ladder-type poly(para-phenylenes) (LPPPs)-show high intrachain order and a small distribution of effective conjugation lengths, which makes them a perfect model system for conjugated polymers. The influence of the effective conjugation length on the energetic position and the stabilization of photoexcited charged and neutral states is investigated. Interchain interactions are discussed on the base of optical spectroscopy under hydrostatic pressure.

引用

页码：507 / 510

页数：4

共 31 条

[1] The exciton binding energy in luminescent conjugated polymers
Bredas, JL
Cornil, J
Heeger, AJ
[J]. ADVANCED MATERIALS, 1996, 8 (05) : 447 - &
[2] ELECTRONIC-STRUCTURE OF HIGHLY CONDUCTING POLY-(PARA-PHENYLENE) CHAINS - AN ABINITIO HARTREE-FOCK STUDY
BREDAS, JL
THEMANS, B
ANDRE, JM
[J]. PHYSICAL REVIEW B, 1982, 26 (10): : 6000 - 6002
[3] PHOTOEXCITED STATES IN POLY(PARA-PHENYLENE VINYLENE) - COMPARISON WITH TRANS,TRANS-DISTYRYLBENZENE, A MODEL OLIGOMER
COLANERI, NF
BRADLEY, DDC
FRIEND, RH
BURN, PL
HOLMES, AB
SPANGLER, CW
[J]. PHYSICAL REVIEW B, 1990, 42 (18): : 11670 - 11681
[4] Does photogeneration produce bipolarons in poly(para-phenylene vinylene)?
Conwell, EM
Mizes, HA
[J]. SYNTHETIC METALS, 1996, 78 (03) : 201 - 207
[5] OPTICAL PROBES OF EXCITED-STATES IN POLY(P-PHENYLENEVINYLENE) - COMMENT
CONWELL, EM
ROTHBERG, LJ
MIZES, HA
[J]. PHYSICAL REVIEW LETTERS, 1994, 73 (23) : 3179 - 3179
[6] EDER S, IN PRESS ADV MAT
[7] ULTRAVIOLET ORGANIC LIQUID LASERS
FURUMOTO, HW
CECCON, HL
[J]. IEEE JOURNAL OF QUANTUM ELECTRONICS, 1970, QE 6 (05) : 262 - +
[8] Femtosecond relaxation of photoexcitations in a poly(para-phenylene)-type ladder polymer
Graupner, W
Leising, G
Lanzani, G
Nisoli, M
DeSilvestri, S
Scherf, U
[J]. PHYSICAL REVIEW LETTERS, 1996, 76 (05) : 847 - 850
[9] EXCITED-STATES IN PPP-TYPE LADDERPOLYMERS PROBED BY PHOTOINDUCED ABSORPTION
GRAUPNER, W
EDER, S
MAURI, M
LEISING, G
SCHERF, U
[J]. SYNTHETIC METALS, 1995, 69 (1-3) : 419 - 422
[10] GRAUPNER W, UNPUB PHYS REV B

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