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

^*Corresponding author for this work

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

30 Scopus citations

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.

Original language	English
Pages (from-to)	4819-4828
Number of pages	10
Journal	Journal of Physical Chemistry A
Volume	122
Issue number	21
DOIs	https://doi.org/10.1021/acs.jpca.8b02050
State	Published - 31 May 2018
Externally published	Yes

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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",

journal = "Journal of Physical Chemistry A",

issn = "1089-5639",

publisher = "American Chemical Society",

number = "21",

}

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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