The phosphorescence excitation spectrum of jet-cooled xanthione in the region of the T1 ← S0 and S1 ← S0 absorption transitions

R. P. Brint; W. G. Doherty; A. A. Ruth

doi:10.1006/jmsp.2002.8684

The phosphorescence excitation spectrum of jet-cooled xanthione in the region of the T₁ ← S₀ and S₁ ← S₀ absorption transitions

R. P. Brint
, W. G. Doherty
, A. A. Ruth

School of Physics

University College Cork

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

Abstract

The ³A₂(nπ*) → ¹A₁X(T₁ → (S₀) phosphorescence excitation spectrum of jet-cooled xanthione was investigated in the region 14 920-17 600 cm^-1. The structure observed is shown to be due to the T₁ ← S₀ absorption and an assignment in terms of the vibronic structure of that band is proposed. A previous assignment of the S₁ ← S₀ origin is considered in detail and the transition involved is shown to be most probably due to absorption of a vibronic triplet state T_1z,v7. An alternative but tentative assignment of the S_1,0 ← S_0,0 transition is suggested. Comparison is made with previous spectroscopic and theoretical work on the molecule and its congeners, 4H-pyran-4-thione and 4H-1-benzopyran-4-thione.

Original language	English
Pages (from-to)	151-158
Number of pages	8
Journal	Journal of Molecular Spectroscopy
Volume	216
Issue number	1
DOIs	https://doi.org/10.1006/jmsp.2002.8684
Publication status	Published - 2002

Keywords

Aromatic thioketone
Excitation spectrum
Phosphorescence
Triplet state
Xanthione

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10.1006/jmsp.2002.8684

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title = "The phosphorescence excitation spectrum of jet-cooled xanthione in the region of the T1 ← S0 and S1 ← S0 absorption transitions",

abstract = "The 3A2(nπ*) → 1A1X(T1 → (S0) phosphorescence excitation spectrum of jet-cooled xanthione was investigated in the region 14 920-17 600 cm-1. The structure observed is shown to be due to the T1 ← S0 absorption and an assignment in terms of the vibronic structure of that band is proposed. A previous assignment of the S1 ← S0 origin is considered in detail and the transition involved is shown to be most probably due to absorption of a vibronic triplet state T1z,v7. An alternative but tentative assignment of the S1,0 ← S0,0 transition is suggested. Comparison is made with previous spectroscopic and theoretical work on the molecule and its congeners, 4H-pyran-4-thione and 4H-1-benzopyran-4-thione.",

keywords = "Aromatic thioketone, Excitation spectrum, Phosphorescence, Triplet state, Xanthione",

author = "Brint, \{R. P.\} and Doherty, \{W. G.\} and Ruth, \{A. A.\}",

year = "2002",

doi = "10.1006/jmsp.2002.8684",

language = "English",

volume = "216",

pages = "151--158",

journal = "Journal of Molecular Spectroscopy",

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T1 - The phosphorescence excitation spectrum of jet-cooled xanthione in the region of the T1 ← S0 and S1 ← S0 absorption transitions

AU - Brint, R. P.

AU - Doherty, W. G.

AU - Ruth, A. A.

PY - 2002

Y1 - 2002

N2 - The 3A2(nπ*) → 1A1X(T1 → (S0) phosphorescence excitation spectrum of jet-cooled xanthione was investigated in the region 14 920-17 600 cm-1. The structure observed is shown to be due to the T1 ← S0 absorption and an assignment in terms of the vibronic structure of that band is proposed. A previous assignment of the S1 ← S0 origin is considered in detail and the transition involved is shown to be most probably due to absorption of a vibronic triplet state T1z,v7. An alternative but tentative assignment of the S1,0 ← S0,0 transition is suggested. Comparison is made with previous spectroscopic and theoretical work on the molecule and its congeners, 4H-pyran-4-thione and 4H-1-benzopyran-4-thione.

AB - The 3A2(nπ*) → 1A1X(T1 → (S0) phosphorescence excitation spectrum of jet-cooled xanthione was investigated in the region 14 920-17 600 cm-1. The structure observed is shown to be due to the T1 ← S0 absorption and an assignment in terms of the vibronic structure of that band is proposed. A previous assignment of the S1 ← S0 origin is considered in detail and the transition involved is shown to be most probably due to absorption of a vibronic triplet state T1z,v7. An alternative but tentative assignment of the S1,0 ← S0,0 transition is suggested. Comparison is made with previous spectroscopic and theoretical work on the molecule and its congeners, 4H-pyran-4-thione and 4H-1-benzopyran-4-thione.

KW - Aromatic thioketone

KW - Excitation spectrum

KW - Phosphorescence

KW - Triplet state

KW - Xanthione

UR - https://www.scopus.com/pages/publications/0036027082

U2 - 10.1006/jmsp.2002.8684

DO - 10.1006/jmsp.2002.8684

M3 - Article

AN - SCOPUS:0036027082

SN - 0022-2852

VL - 216

SP - 151

EP - 158

JO - Journal of Molecular Spectroscopy

JF - Journal of Molecular Spectroscopy

IS - 1

ER -

The phosphorescence excitation spectrum of jet-cooled xanthione in the region of the T₁ ← S₀ and S₁ ← S₀ absorption transitions

Abstract

Keywords

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