Triplet exciton formation due to interaction between singlet excitons in polydiacetylene

K. Ichimura; M. Yoshizawa; H. Matsuda; S. Okada; M. M. Ohsugi; H. Nakanishi; T. Kobayashi

doi:10.1063/1.465721

Triplet exciton formation due to interaction between singlet excitons in polydiacetylene

K. Ichimura, M. Yoshizawa, H. Matsuda, S. Okada, M. M. Ohsugi, H. Nakanishi, T. Kobayashi

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

18 Citations (Scopus)

Abstract

The time-resolved spectroscopy in polydiacetylene single crystals (PDA-MADF {poly-1-[3-(methylamino)phenyl]-4-[3,5-bis(trifluoromethyl)phenyl]-1,3- butadiyne}) on femtosecond and picosecond time scales was performed. The time dependence of the photoinduced reflectance change in PDA-MADF exhibits three components with lifetimes ∼200 fs, 1 - 2 ps, and ≫200 ps. These components are assigned to the free ¹B_u excitons, self-trapped excitons, and triplet excitons. From the excitation intensity dependence of the reflectance change, a significant role of bimolecular interactions between singlet excitons for the formation of triplet excitons is clarified. A model of the mechanism of triplet exciton formation after the creation of singlet excitons is proposed.

Original language	English
Pages (from-to)	7404-7416
Number of pages	13
Journal	The Journal of Chemical Physics
Volume	99
Issue number	10
DOIs	https://doi.org/10.1063/1.465721
Publication status	Published - 1993 Jan 1
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)
Physical and Theoretical Chemistry

Access to Document

10.1063/1.465721

Cite this

@article{82abcb307c184fd6ad5fbc225ed3fd31,

title = "Triplet exciton formation due to interaction between singlet excitons in polydiacetylene",

abstract = "The time-resolved spectroscopy in polydiacetylene single crystals (PDA-MADF {poly-1-[3-(methylamino)phenyl]-4-[3,5-bis(trifluoromethyl)phenyl]-1,3- butadiyne}) on femtosecond and picosecond time scales was performed. The time dependence of the photoinduced reflectance change in PDA-MADF exhibits three components with lifetimes ∼200 fs, 1 - 2 ps, and ≫200 ps. These components are assigned to the free 1Bu excitons, self-trapped excitons, and triplet excitons. From the excitation intensity dependence of the reflectance change, a significant role of bimolecular interactions between singlet excitons for the formation of triplet excitons is clarified. A model of the mechanism of triplet exciton formation after the creation of singlet excitons is proposed.",

author = "K. Ichimura and M. Yoshizawa and H. Matsuda and S. Okada and Ohsugi, {M. M.} and H. Nakanishi and T. Kobayashi",

year = "1993",

month = jan,

day = "1",

doi = "10.1063/1.465721",

language = "English",

volume = "99",

pages = "7404--7416",

journal = "Journal of Chemical Physics",

issn = "0021-9606",

publisher = "American Institute of Physics Publising LLC",

number = "10",

}

TY - JOUR

T1 - Triplet exciton formation due to interaction between singlet excitons in polydiacetylene

AU - Ichimura, K.

AU - Yoshizawa, M.

AU - Matsuda, H.

AU - Okada, S.

AU - Ohsugi, M. M.

AU - Nakanishi, H.

AU - Kobayashi, T.

PY - 1993/1/1

Y1 - 1993/1/1

N2 - The time-resolved spectroscopy in polydiacetylene single crystals (PDA-MADF {poly-1-[3-(methylamino)phenyl]-4-[3,5-bis(trifluoromethyl)phenyl]-1,3- butadiyne}) on femtosecond and picosecond time scales was performed. The time dependence of the photoinduced reflectance change in PDA-MADF exhibits three components with lifetimes ∼200 fs, 1 - 2 ps, and ≫200 ps. These components are assigned to the free 1Bu excitons, self-trapped excitons, and triplet excitons. From the excitation intensity dependence of the reflectance change, a significant role of bimolecular interactions between singlet excitons for the formation of triplet excitons is clarified. A model of the mechanism of triplet exciton formation after the creation of singlet excitons is proposed.

AB - The time-resolved spectroscopy in polydiacetylene single crystals (PDA-MADF {poly-1-[3-(methylamino)phenyl]-4-[3,5-bis(trifluoromethyl)phenyl]-1,3- butadiyne}) on femtosecond and picosecond time scales was performed. The time dependence of the photoinduced reflectance change in PDA-MADF exhibits three components with lifetimes ∼200 fs, 1 - 2 ps, and ≫200 ps. These components are assigned to the free 1Bu excitons, self-trapped excitons, and triplet excitons. From the excitation intensity dependence of the reflectance change, a significant role of bimolecular interactions between singlet excitons for the formation of triplet excitons is clarified. A model of the mechanism of triplet exciton formation after the creation of singlet excitons is proposed.

UR - http://www.scopus.com/inward/record.url?scp=0001305130&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0001305130&partnerID=8YFLogxK

U2 - 10.1063/1.465721

DO - 10.1063/1.465721

M3 - Article

AN - SCOPUS:0001305130

VL - 99

SP - 7404

EP - 7416

JO - Journal of Chemical Physics

JF - Journal of Chemical Physics

SN - 0021-9606

IS - 10

ER -

Triplet exciton formation due to interaction between singlet excitons in polydiacetylene

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this