Near-infrared two-photon absorption and excited state dynamics of a fluorescent diarylethene derivative

Sotome, Hikaru; Nagasaka, Tatsuhiro; Konishi, Tatsuki; Kamada, Kenji; Morimoto, Masakazu; Irie, Masahiro; Miyasaka, Hiroshi

doi:https://doi.org/10.1007/s43630-024-00573-y

Near-infrared two-photon absorption and excited state dynamics of a fluorescent diarylethene derivative

Sotome, Hikaru; Nagasaka, Tatsuhiro; Konishi, Tatsuki et al.

Photochemical and Photobiological Sciences, 2024, 23, 1041-1050

Number of Access:483（2025-08-15 01:09 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/97118

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Title	Near-infrared two-photon absorption and excited state dynamics of a fluorescent diarylethene derivative
Creator	CreatorName Sotome, Hikaru
	CreatorName Nagasaka, Tatsuhiro
	CreatorName Konishi, Tatsuki
	NRID 1000090356816 1000090356816 CreatorName Kamada, Kenji
	NRID 1000070447126 1000070447126 CreatorName Morimoto, Masakazu
	NRID 1000030001986 1000030001986 CreatorName Irie, Masahiro
	NRID 1000040182000 1000040182000 ORCID 0000-0002-6020-6591 0000-0002-6020-6591 researchmap permalink read0076304 read0076304 Scopus Author ID 8513846500 8513846500 CreatorName Miyasaka, Hiroshi
Subject	Diarylethene
	Excited state dynamics
	Photochromism
	Two-photon absorption
	Ultrafast spectroscopy
Description	The version of record of this article, first published in Photochemical and Photobiological Sciences, is available online at Publisher’s website: https://doi.org/10.1007/s43630-024-00573-y.
Abstract	Abstract: Near-infrared two-photon absorption and excited state dynamics of a fluorescent diarylethene (fDAE) derivative were investigated by time-resolved absorption and fluorescence spectroscopies. Prescreening with quantum chemical calculation predicted that a derivative with methylthienyl groups (mt-fDAE) in the closed-ring isomer has a two-photon absorption cross-section larger than 1000 GM, which was experimentally verified by Z-scan measurements and excitation power dependence in transient absorption. Comparison of transient absorption spectra under one-photon and simultaneous two-photon excitation conditions revealed that the closed-ring isomer of mt-fDAE populated into higher excited states deactivates following three pathways on a timescale of ca. 200 fs: (i) the cycloreversion reaction more efficient than that by the one-photon process, (ii) internal conversion into the S1 state, and (iii) relaxation into a lower state (S1’ state) different from the S1 state. Time-resolved fluorescence measurements demonstrated that this S1’ state is relaxed to the S1 state with the large emission probability. These findings obtained in the present work contribute to extension of the ON–OFF switching capability of fDAE to the biological window and application to super-resolution fluorescence imaging in a two-photon manner.
Publisher	Springer Nature
Source Title	Photochemical and Photobiological Sciences
Volume (Issue)	23
Page	1041-1050
Date of Issued	2024-06-01
Language	English
Handle URL	https://hdl.handle.net/11094/97118
PISSN	1474905X
eISSN	14749092
Relation.isIdenticalTo	DOI (Publisher Version) https://doi.org/10.1007/s43630-024-00573-y
Access Rights	open access
CopyRight	This article is licensed under a Creative Commons Attribution 4.0 International License.
oaire:version	Version of Record
Category	学術雑誌論文 Journal Article

Resource Type	journal article
Local Type	Journal Article
DCTERMS.bibliographicCitation	Photochemical and Photobiological Sciences. 2024, 23, p. 1041-1050
DC.title	Near-infrared two-photon absorption and excited state dynamics of a fluorescent diarylethene derivative
DC.creator	Sotome, Hikaru
	Nagasaka, Tatsuhiro
	Konishi, Tatsuki
	Kamada, Kenji
	Morimoto, Masakazu
	Irie, Masahiro
	Miyasaka, Hiroshi
DC.publisher	Springer Nature
DC.language' scheme='DCTERMS.RFC1766	English
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2024-06-01
DC.identifier	https://doi.org/10.1007/s43630-024-00573-y
DC.subject	Diarylethene
	Excited state dynamics
	Photochromism
	Two-photon absorption
	Ultrafast spectroscopy
DC.description	The version of record of this article, first published in Photochemical and Photobiological Sciences, is available online at Publisher’s website: https://doi.org/10.1007/s43630-024-00573-y.
DCTERMS.abstract	Abstract: Near-infrared two-photon absorption and excited state dynamics of a fluorescent diarylethene (fDAE) derivative were investigated by time-resolved absorption and fluorescence spectroscopies. Prescreening with quantum chemical calculation predicted that a derivative with methylthienyl groups (mt-fDAE) in the closed-ring isomer has a two-photon absorption cross-section larger than 1000 GM, which was experimentally verified by Z-scan measurements and excitation power dependence in transient absorption. Comparison of transient absorption spectra under one-photon and simultaneous two-photon excitation conditions revealed that the closed-ring isomer of mt-fDAE populated into higher excited states deactivates following three pathways on a timescale of ca. 200 fs: (i) the cycloreversion reaction more efficient than that by the one-photon process, (ii) internal conversion into the S1 state, and (iii) relaxation into a lower state (S1’ state) different from the S1 state. Time-resolved fluorescence measurements demonstrated that this S1’ state is relaxed to the S1 state with the large emission probability. These findings obtained in the present work contribute to extension of the ON–OFF switching capability of fDAE to the biological window and application to super-resolution fluorescence imaging in a two-photon manner.
DC.rights	This article is licensed under a Creative Commons Attribution 4.0 International License.
DC.format	97118
citation_title	Near-infrared two-photon absorption and excited state dynamics of a fluorescent diarylethene derivative
citation_author	Sotome, Hikaru
	Nagasaka, Tatsuhiro
	Konishi, Tatsuki
	Kamada, Kenji
	Morimoto, Masakazu
	Irie, Masahiro
	Miyasaka, Hiroshi
citation_publisher	Springer Nature
citation_language	English
citation_date	2024-06-01
citation_journal_title	Photochemical and Photobiological Sciences
citation_volume	23
citation_firstpage	1041
citation_lastpage	1050
citation_doi	https://doi.org/10.1007/s43630-024-00573-y
citation_public_url	https://hdl.handle.net/11094/97118

Near-infrared two-photon absorption and excited state dynamics of a fluorescent diarylethene derivative

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