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Efficient intersystem crossing in 2-aminopurine riboside probed by femtosecond time-resolved transient vibrational absorption spectroscopy

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Efficient intersystem crossing in 2-aminopurine riboside probed by femtosecond time-resolved transient vibrational absorption spectroscopy. / Böhnke, Hendrik; Roettger, Katharina; Ingle, Rebecca; Marroux, Hugo; Bohnsack, Mats; Orr-Ewing, Andrew; Temps, Friedrich.

In: Physical Chemistry Chemical Physics, Vol. 20, 12.07.2018, p. 20033-20042.

Research output: Contribution to journalArticle

Harvard

Böhnke, H, Roettger, K, Ingle, R, Marroux, H, Bohnsack, M, Orr-Ewing, A & Temps, F 2018, 'Efficient intersystem crossing in 2-aminopurine riboside probed by femtosecond time-resolved transient vibrational absorption spectroscopy', Physical Chemistry Chemical Physics, vol. 20, pp. 20033-20042. https://doi.org/10.1039/C8CP02664E

APA

Böhnke, H., Roettger, K., Ingle, R., Marroux, H., Bohnsack, M., Orr-Ewing, A., & Temps, F. (2018). Efficient intersystem crossing in 2-aminopurine riboside probed by femtosecond time-resolved transient vibrational absorption spectroscopy. Physical Chemistry Chemical Physics, 20, 20033-20042. https://doi.org/10.1039/C8CP02664E

Vancouver

Böhnke H, Roettger K, Ingle R, Marroux H, Bohnsack M, Orr-Ewing A et al. Efficient intersystem crossing in 2-aminopurine riboside probed by femtosecond time-resolved transient vibrational absorption spectroscopy. Physical Chemistry Chemical Physics. 2018 Jul 12;20:20033-20042. https://doi.org/10.1039/C8CP02664E

Author

Böhnke, Hendrik ; Roettger, Katharina ; Ingle, Rebecca ; Marroux, Hugo ; Bohnsack, Mats ; Orr-Ewing, Andrew ; Temps, Friedrich. / Efficient intersystem crossing in 2-aminopurine riboside probed by femtosecond time-resolved transient vibrational absorption spectroscopy. In: Physical Chemistry Chemical Physics. 2018 ; Vol. 20. pp. 20033-20042.

Bibtex

@article{f1e9fa6d059841acb8bb236616cbe4b3,
title = "Efficient intersystem crossing in 2-aminopurine riboside probed by femtosecond time-resolved transient vibrational absorption spectroscopy",
abstract = "The photophysical dynamics of 2-aminopurine riboside (2APr) in CHCl3 have been studied following excitation at λpump = 310 nm by means of femtosecond transient vibrational absorption spectroscopy (TVAS) aided by quantum chemical density functional theory (DFT) and ab initio calculations. The experiments identified numerous vibrational marker bands in the regions of the NH2 stretch and the 2AP ring vibrations which could be assigned to the bleach of the S0 electronic ground state (GS) and to transient populations in the 1ππ* and 3ππ* excited electronic states. The temporal evolution of the transient vibrational bands shows that the decay of the 1ππ* population is accompanied by a partial recovery of the GS and a concurrent population of the 3ππ* state with a time constant of τ2 = 740 ± 15 ps. The ensuing electronic relaxation is concluded to proceed via the 1nπ* state as intermediate state. The absence of observable transient vibrational bands of this state hints at an upper limit for its lifetime of τ < 100 ps. The triplet quantum yield is found to be φT = 0.42 ± 0.07.",
author = "Hendrik B{\"o}hnke and Katharina Roettger and Rebecca Ingle and Hugo Marroux and Mats Bohnsack and Andrew Orr-Ewing and Friedrich Temps",
year = "2018",
month = "7",
day = "12",
doi = "10.1039/C8CP02664E",
language = "English",
volume = "20",
pages = "20033--20042",
journal = "Physical Chemistry Chemical Physics",
issn = "1463-9076",
publisher = "The Royal Society of Chemistry",

}

RIS - suitable for import to EndNote

TY - JOUR

T1 - Efficient intersystem crossing in 2-aminopurine riboside probed by femtosecond time-resolved transient vibrational absorption spectroscopy

AU - Böhnke, Hendrik

AU - Roettger, Katharina

AU - Ingle, Rebecca

AU - Marroux, Hugo

AU - Bohnsack, Mats

AU - Orr-Ewing, Andrew

AU - Temps, Friedrich

PY - 2018/7/12

Y1 - 2018/7/12

N2 - The photophysical dynamics of 2-aminopurine riboside (2APr) in CHCl3 have been studied following excitation at λpump = 310 nm by means of femtosecond transient vibrational absorption spectroscopy (TVAS) aided by quantum chemical density functional theory (DFT) and ab initio calculations. The experiments identified numerous vibrational marker bands in the regions of the NH2 stretch and the 2AP ring vibrations which could be assigned to the bleach of the S0 electronic ground state (GS) and to transient populations in the 1ππ* and 3ππ* excited electronic states. The temporal evolution of the transient vibrational bands shows that the decay of the 1ππ* population is accompanied by a partial recovery of the GS and a concurrent population of the 3ππ* state with a time constant of τ2 = 740 ± 15 ps. The ensuing electronic relaxation is concluded to proceed via the 1nπ* state as intermediate state. The absence of observable transient vibrational bands of this state hints at an upper limit for its lifetime of τ < 100 ps. The triplet quantum yield is found to be φT = 0.42 ± 0.07.

AB - The photophysical dynamics of 2-aminopurine riboside (2APr) in CHCl3 have been studied following excitation at λpump = 310 nm by means of femtosecond transient vibrational absorption spectroscopy (TVAS) aided by quantum chemical density functional theory (DFT) and ab initio calculations. The experiments identified numerous vibrational marker bands in the regions of the NH2 stretch and the 2AP ring vibrations which could be assigned to the bleach of the S0 electronic ground state (GS) and to transient populations in the 1ππ* and 3ππ* excited electronic states. The temporal evolution of the transient vibrational bands shows that the decay of the 1ππ* population is accompanied by a partial recovery of the GS and a concurrent population of the 3ππ* state with a time constant of τ2 = 740 ± 15 ps. The ensuing electronic relaxation is concluded to proceed via the 1nπ* state as intermediate state. The absence of observable transient vibrational bands of this state hints at an upper limit for its lifetime of τ < 100 ps. The triplet quantum yield is found to be φT = 0.42 ± 0.07.

U2 - 10.1039/C8CP02664E

DO - 10.1039/C8CP02664E

M3 - Article

VL - 20

SP - 20033

EP - 20042

JO - Physical Chemistry Chemical Physics

JF - Physical Chemistry Chemical Physics

SN - 1463-9076

ER -