Nanosecond time-resolved photoinduced absorption of trans-polyacetylene

T. Kobayashi; M. Yoshizawa; H. Fujimoto; J. Tanaka

doi:10.1016/0379-6779(87)90766-1

Nanosecond time-resolved photoinduced absorption of trans-polyacetylene

T. Kobayashi, M. Yoshizawa, H. Fujimoto, J. Tanaka

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

The photoinduced absorption and bleaching of trans-polyacetylene were investigated in nanosecond time regime for the first time. The transient absorption near the band gap and the bleaching of the interband transition were observed for both trans-(CH)_x and trans-(CD)_x. The absorption near the band gap saturates at ΔA/A_{O ∼ 0.01}. The decay curves of transient absorbance change can be fitted to erf[(t/τ)^{- 1 2}]. The time constants are 144±15 ns ((CH)_x) and 305±27 ns ((CD)_x) at 4 K and 32±6 ns ((CH)_x) and 40±6 ns ((CD)_x) at 290 K. When the trans content in cis-rich film decreases, the time constant becomes longer. The decay kinetics was interpreted by the interchain recombination of photoexcited polaron pairs.

Original language	English
Pages (from-to)	367-372
Number of pages	6
Journal	Synthetic Metals
Volume	17
Issue number	1-3
DOIs	https://doi.org/10.1016/0379-6779(87)90766-1
Publication status	Published - 1987 Jan
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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@article{8ce8c18a44d8422d8fff6c8c7c3db92f,

title = "Nanosecond time-resolved photoinduced absorption of trans-polyacetylene",

abstract = "The photoinduced absorption and bleaching of trans-polyacetylene were investigated in nanosecond time regime for the first time. The transient absorption near the band gap and the bleaching of the interband transition were observed for both trans-(CH)x and trans-(CD)x. The absorption near the band gap saturates at ΔA/AO ∼ 0.01. The decay curves of transient absorbance change can be fitted to erf[(t/τ)- 1 2]. The time constants are 144±15 ns ((CH)x) and 305±27 ns ((CD)x) at 4 K and 32±6 ns ((CH)x) and 40±6 ns ((CD)x) at 290 K. When the trans content in cis-rich film decreases, the time constant becomes longer. The decay kinetics was interpreted by the interchain recombination of photoexcited polaron pairs.",

author = "T. Kobayashi and M. Yoshizawa and H. Fujimoto and J. Tanaka",

note = "Funding Information: ACKNOWLEDGEMENTS This work is supported by the Grant-in-Aid for the Special Distinguished Research from the Ministry of Education, Science, and Culture to T.K.(56222005) and the Toray Science and Technology Foundation and the Kurata Science Foundation to T.K., and by the Grant-in-Aid of the Ministry of Education on Special Project on Organic Thin Films to J.T.(60211014).",

year = "1987",

month = jan,

doi = "10.1016/0379-6779(87)90766-1",

language = "English",

volume = "17",

pages = "367--372",

journal = "Synthetic Metals",

issn = "0379-6779",

publisher = "Elsevier BV",

number = "1-3",

}

TY - JOUR

T1 - Nanosecond time-resolved photoinduced absorption of trans-polyacetylene

AU - Kobayashi, T.

AU - Yoshizawa, M.

AU - Fujimoto, H.

AU - Tanaka, J.

N1 - Funding Information: ACKNOWLEDGEMENTS This work is supported by the Grant-in-Aid for the Special Distinguished Research from the Ministry of Education, Science, and Culture to T.K.(56222005) and the Toray Science and Technology Foundation and the Kurata Science Foundation to T.K., and by the Grant-in-Aid of the Ministry of Education on Special Project on Organic Thin Films to J.T.(60211014).

PY - 1987/1

Y1 - 1987/1

N2 - The photoinduced absorption and bleaching of trans-polyacetylene were investigated in nanosecond time regime for the first time. The transient absorption near the band gap and the bleaching of the interband transition were observed for both trans-(CH)x and trans-(CD)x. The absorption near the band gap saturates at ΔA/AO ∼ 0.01. The decay curves of transient absorbance change can be fitted to erf[(t/τ)- 1 2]. The time constants are 144±15 ns ((CH)x) and 305±27 ns ((CD)x) at 4 K and 32±6 ns ((CH)x) and 40±6 ns ((CD)x) at 290 K. When the trans content in cis-rich film decreases, the time constant becomes longer. The decay kinetics was interpreted by the interchain recombination of photoexcited polaron pairs.

AB - The photoinduced absorption and bleaching of trans-polyacetylene were investigated in nanosecond time regime for the first time. The transient absorption near the band gap and the bleaching of the interband transition were observed for both trans-(CH)x and trans-(CD)x. The absorption near the band gap saturates at ΔA/AO ∼ 0.01. The decay curves of transient absorbance change can be fitted to erf[(t/τ)- 1 2]. The time constants are 144±15 ns ((CH)x) and 305±27 ns ((CD)x) at 4 K and 32±6 ns ((CH)x) and 40±6 ns ((CD)x) at 290 K. When the trans content in cis-rich film decreases, the time constant becomes longer. The decay kinetics was interpreted by the interchain recombination of photoexcited polaron pairs.

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U2 - 10.1016/0379-6779(87)90766-1

DO - 10.1016/0379-6779(87)90766-1

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AN - SCOPUS:0022561509

VL - 17

SP - 367

EP - 372

JO - Synthetic Metals

JF - Synthetic Metals

SN - 0379-6779

IS - 1-3

ER -

Nanosecond time-resolved photoinduced absorption of trans-polyacetylene

Abstract

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