Photoisomerization dynamics of alkyl-substituted stilbenes in supersonic jets

Klaus Rademann; Uzi Even; Shiomo Rozen; Joshua Jortner

doi:10.1016/0009-2614(86)85145-4

Photoisomerization dynamics of alkyl-substituted stilbenes in supersonic jets

Klaus Rademann^*, Uzi Even, Shiomo Rozen, Joshua Jortner

^*Corresponding author for this work

School of Chemistry

Tel Aviv University

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

12 Scopus citations

Abstract

We report time-resolved fluorescence decay lifetimes from photoselected states of jet-cooled 4-ethyl-trans-stilbene (4ETS) and 4-n-propyl-trans-stilbene (4PTS) in the energy range E_v = 0-2800 cm^-1 above the S₁ origin. Alkyl substitution enhances the non-radiative decay rates. These data can be fitted by the statistical RRKM theory in conjunction with the reduction of the photoisomerization threshold from E_t = 1300±50 cm^-1 for trans-stilbene to E_t = 1100±100cm^-1 for 4ETS, and E_t = 1000±100 cm^-1 for 4PTS.

Original language	English
Pages (from-to)	5-11
Number of pages	7
Journal	Chemical Physics Letters
Volume	125
Issue number	1
DOIs	https://doi.org/10.1016/0009-2614(86)85145-4
State	Published - 21 Mar 1986

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title = "Photoisomerization dynamics of alkyl-substituted stilbenes in supersonic jets",

abstract = "We report time-resolved fluorescence decay lifetimes from photoselected states of jet-cooled 4-ethyl-trans-stilbene (4ETS) and 4-n-propyl-trans-stilbene (4PTS) in the energy range Ev = 0-2800 cm-1 above the S1 origin. Alkyl substitution enhances the non-radiative decay rates. These data can be fitted by the statistical RRKM theory in conjunction with the reduction of the photoisomerization threshold from Et = 1300±50 cm-1 for trans-stilbene to Et = 1100±100cm-1 for 4ETS, and Et = 1000±100 cm-1 for 4PTS.",

author = "Klaus Rademann and Uzi Even and Shiomo Rozen and Joshua Jortner",

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T1 - Photoisomerization dynamics of alkyl-substituted stilbenes in supersonic jets

AU - Rademann, Klaus

AU - Even, Uzi

AU - Rozen, Shiomo

AU - Jortner, Joshua

PY - 1986/3/21

Y1 - 1986/3/21

N2 - We report time-resolved fluorescence decay lifetimes from photoselected states of jet-cooled 4-ethyl-trans-stilbene (4ETS) and 4-n-propyl-trans-stilbene (4PTS) in the energy range Ev = 0-2800 cm-1 above the S1 origin. Alkyl substitution enhances the non-radiative decay rates. These data can be fitted by the statistical RRKM theory in conjunction with the reduction of the photoisomerization threshold from Et = 1300±50 cm-1 for trans-stilbene to Et = 1100±100cm-1 for 4ETS, and Et = 1000±100 cm-1 for 4PTS.

AB - We report time-resolved fluorescence decay lifetimes from photoselected states of jet-cooled 4-ethyl-trans-stilbene (4ETS) and 4-n-propyl-trans-stilbene (4PTS) in the energy range Ev = 0-2800 cm-1 above the S1 origin. Alkyl substitution enhances the non-radiative decay rates. These data can be fitted by the statistical RRKM theory in conjunction with the reduction of the photoisomerization threshold from Et = 1300±50 cm-1 for trans-stilbene to Et = 1100±100cm-1 for 4ETS, and Et = 1000±100 cm-1 for 4PTS.

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Photoisomerization dynamics of alkyl-substituted stilbenes in supersonic jets

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