Decay Pathways of Thymine Revisited

Bert M. Pilles; Benjamin Maerz; Jinquan Chen; Dominik B. Bucher; Peter Gilch; Bern Kohler; Wolfgang Zinth; Benjamin P. Fingerhut; Wolfgang J. Schreier

doi:10.1021/acs.jpca.8b02050

Decay Pathways of Thymine Revisited

Bert M. Pilles
, Benjamin Maerz
, Jinquan Chen
, Dominik B. Bucher
, Peter Gilch
, Bern Kohler
, Wolfgang Zinth^*
, Benjamin P. Fingerhut
, Wolfgang J. Schreier

^*此作品的通讯作者

精密光谱科学与技术高等研究院

Ludwig Maximilian University of Munich
Heinrich Heine University Düsseldorf
Ohio State University
Max-Born-Institute for Nonlinear Optics and Short Pulse Spectroscopy

科研成果: 期刊稿件 › 文章 › 同行评审

34 引用（Scopus）

摘要

The decay of electronically excited states of thymine (Thy) and thymidine 5′-monophosphate (TMP) was studied by time-resolved UV/vis and IR spectroscopy. In addition to the well-established ultrafast internal conversion to the ground state, a so far unidentified UV-induced species is observed. In D₂O, this species decays with a time constant of 300 ps for thymine and of 1 ns for TMP. The species coexists with the lowest triplet state and is formed with a comparably high quantum yield of about 10% independent of the solvent. The experimentally determined spectral signatures are discussed in the light of quantum chemical calculations of the singlet and triplet excited states of thymine.

源语言	英语
页（从-至）	4819-4828
页数	10
期刊	Journal of Physical Chemistry A
卷	122
期	21
DOI	https://doi.org/10.1021/acs.jpca.8b02050
出版状态	已出版 - 31 5月 2018

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10.1021/acs.jpca.8b02050

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title = "Decay Pathways of Thymine Revisited",

abstract = "The decay of electronically excited states of thymine (Thy) and thymidine 5′-monophosphate (TMP) was studied by time-resolved UV/vis and IR spectroscopy. In addition to the well-established ultrafast internal conversion to the ground state, a so far unidentified UV-induced species is observed. In D2O, this species decays with a time constant of 300 ps for thymine and of 1 ns for TMP. The species coexists with the lowest triplet state and is formed with a comparably high quantum yield of about 10\% independent of the solvent. The experimentally determined spectral signatures are discussed in the light of quantum chemical calculations of the singlet and triplet excited states of thymine.",

author = "Pilles, \{Bert M.\} and Benjamin Maerz and Jinquan Chen and Bucher, \{Dominik B.\} and Peter Gilch and Bern Kohler and Wolfgang Zinth and Fingerhut, \{Benjamin P.\} and Schreier, \{Wolfgang J.\}",

note = "Publisher Copyright: {\textcopyright} 2018 American Chemical Society.",

year = "2018",

month = may,

day = "31",

doi = "10.1021/acs.jpca.8b02050",

language = "英语",

volume = "122",

pages = "4819--4828",

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TY - JOUR

T1 - Decay Pathways of Thymine Revisited

AU - Pilles, Bert M.

AU - Maerz, Benjamin

AU - Chen, Jinquan

AU - Bucher, Dominik B.

AU - Gilch, Peter

AU - Kohler, Bern

AU - Zinth, Wolfgang

AU - Fingerhut, Benjamin P.

AU - Schreier, Wolfgang J.

PY - 2018/5/31

Y1 - 2018/5/31

N2 - The decay of electronically excited states of thymine (Thy) and thymidine 5′-monophosphate (TMP) was studied by time-resolved UV/vis and IR spectroscopy. In addition to the well-established ultrafast internal conversion to the ground state, a so far unidentified UV-induced species is observed. In D2O, this species decays with a time constant of 300 ps for thymine and of 1 ns for TMP. The species coexists with the lowest triplet state and is formed with a comparably high quantum yield of about 10% independent of the solvent. The experimentally determined spectral signatures are discussed in the light of quantum chemical calculations of the singlet and triplet excited states of thymine.

AB - The decay of electronically excited states of thymine (Thy) and thymidine 5′-monophosphate (TMP) was studied by time-resolved UV/vis and IR spectroscopy. In addition to the well-established ultrafast internal conversion to the ground state, a so far unidentified UV-induced species is observed. In D2O, this species decays with a time constant of 300 ps for thymine and of 1 ns for TMP. The species coexists with the lowest triplet state and is formed with a comparably high quantum yield of about 10% independent of the solvent. The experimentally determined spectral signatures are discussed in the light of quantum chemical calculations of the singlet and triplet excited states of thymine.

UR - https://www.scopus.com/pages/publications/85046936783

U2 - 10.1021/acs.jpca.8b02050

DO - 10.1021/acs.jpca.8b02050

M3 - 文章

C2 - 29747505

AN - SCOPUS:85046936783

SN - 1089-5639

VL - 122

SP - 4819

EP - 4828

JO - Journal of Physical Chemistry A

JF - Journal of Physical Chemistry A

IS - 21

ER -

Decay Pathways of Thymine Revisited

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