Ultrafast dynamics in a series of carotenoids investigated by time-resolved stimulated Raman spectroscopy

Masayuki Yoshizawa; Hideki Hashimoto

doi:10.1117/12.503934

Ultrafast dynamics in a series of carotenoids investigated by time-resolved stimulated Raman spectroscopy

Masayuki Yoshizawa, Hideki Hashimoto

SCI - Physics

Research output: Contribution to journal › Conference article › peer-review

5 Citations (Scopus)

Abstract

Vibrational relaxation in excited states of all-trans-carotenoids has been investigated using femtosecond stimulated Raman spectroscopy with resolutions of 250 fs and 25 cm^-1. The initially photoexcited 1B_u ⁺ state in carotenoids relaxes to the 2A_g^- excited state within 1 ps. The 1B_u^- excited state is an intermediate state of the relaxation. After the relaxation to the 2A _g^- state, the excess energy is held in a C=C stretching mode (ν₁) and remains longer than several picoseconds in short (mini) carotenes. Vibrational feature of carotenoids is of importance in energy transfer of photosynthesis. Femtosecond time-resolved vibrational spectroscopy is necessary to investigate the initial ultrafast kinetics.

Original language	English
Pages (from-to)	13-22
Number of pages	10
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	5212
DOIs	https://doi.org/10.1117/12.503934
Publication status	Published - 2003
Event	Linear and Nonlinear Optics of Organic Materials III - San Diego, CA, United States Duration: 2003 Aug 4 → 2003 Aug 6

Keywords

Carotenoid
Femtosecond Raman Spectroscopy
Vibrational Relaxation

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

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10.1117/12.503934

Cite this

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title = "Ultrafast dynamics in a series of carotenoids investigated by time-resolved stimulated Raman spectroscopy",

abstract = "Vibrational relaxation in excited states of all-trans-carotenoids has been investigated using femtosecond stimulated Raman spectroscopy with resolutions of 250 fs and 25 cm-1. The initially photoexcited 1Bu + state in carotenoids relaxes to the 2Ag- excited state within 1 ps. The 1Bu- excited state is an intermediate state of the relaxation. After the relaxation to the 2A g- state, the excess energy is held in a C=C stretching mode (ν1) and remains longer than several picoseconds in short (mini) carotenes. Vibrational feature of carotenoids is of importance in energy transfer of photosynthesis. Femtosecond time-resolved vibrational spectroscopy is necessary to investigate the initial ultrafast kinetics.",

keywords = "Carotenoid, Femtosecond Raman Spectroscopy, Vibrational Relaxation",

author = "Masayuki Yoshizawa and Hideki Hashimoto",

year = "2003",

doi = "10.1117/12.503934",

language = "English",

volume = "5212",

pages = "13--22",

journal = "Proceedings of SPIE - The International Society for Optical Engineering",

issn = "0277-786X",

publisher = "SPIE",

note = "Linear and Nonlinear Optics of Organic Materials III ; Conference date: 04-08-2003 Through 06-08-2003",

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TY - JOUR

T1 - Ultrafast dynamics in a series of carotenoids investigated by time-resolved stimulated Raman spectroscopy

AU - Yoshizawa, Masayuki

AU - Hashimoto, Hideki

PY - 2003

Y1 - 2003

N2 - Vibrational relaxation in excited states of all-trans-carotenoids has been investigated using femtosecond stimulated Raman spectroscopy with resolutions of 250 fs and 25 cm-1. The initially photoexcited 1Bu + state in carotenoids relaxes to the 2Ag- excited state within 1 ps. The 1Bu- excited state is an intermediate state of the relaxation. After the relaxation to the 2A g- state, the excess energy is held in a C=C stretching mode (ν1) and remains longer than several picoseconds in short (mini) carotenes. Vibrational feature of carotenoids is of importance in energy transfer of photosynthesis. Femtosecond time-resolved vibrational spectroscopy is necessary to investigate the initial ultrafast kinetics.

AB - Vibrational relaxation in excited states of all-trans-carotenoids has been investigated using femtosecond stimulated Raman spectroscopy with resolutions of 250 fs and 25 cm-1. The initially photoexcited 1Bu + state in carotenoids relaxes to the 2Ag- excited state within 1 ps. The 1Bu- excited state is an intermediate state of the relaxation. After the relaxation to the 2A g- state, the excess energy is held in a C=C stretching mode (ν1) and remains longer than several picoseconds in short (mini) carotenes. Vibrational feature of carotenoids is of importance in energy transfer of photosynthesis. Femtosecond time-resolved vibrational spectroscopy is necessary to investigate the initial ultrafast kinetics.

KW - Carotenoid

KW - Femtosecond Raman Spectroscopy

KW - Vibrational Relaxation

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DO - 10.1117/12.503934

M3 - Conference article

AN - SCOPUS:1242308495

SN - 0277-786X

VL - 5212

SP - 13

EP - 22

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

T2 - Linear and Nonlinear Optics of Organic Materials III

Y2 - 4 August 2003 through 6 August 2003

ER -

Ultrafast dynamics in a series of carotenoids investigated by time-resolved stimulated Raman spectroscopy

Abstract

Keywords

ASJC Scopus subject areas

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