Mechanism and dynamics of azobenzene photoisomerization

Thomas Schultz; Jason Quenneville; Benjamin Levine; Alessandro Toniolo; Todd J. Martínez; Stefan Lochbrunner; Michael Schmitt; James P. Shaffer; Marek Z. Zgierski; Albert Stolow

doi:10.1021/ja021363x

Mechanism and dynamics of azobenzene photoisomerization

Thomas Schultz
, Jason Quenneville
, Benjamin Levine
, Alessandro Toniolo
, Todd J. Martínez
, Stefan Lochbrunner
, Michael Schmitt
, James P. Shaffer
, Marek Z. Zgierski
, Albert Stolow

Chemistry

National Research Council of Canada
University of Illinois at Urbana-Champaign

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

321 Scopus citations

Abstract

The excited-state dynamics of trans-azobenzene were investigated by femtosecond time-resolved photoelectron spectroscopy and ab initio molecular dynamics. Two near-degenerate ππ* excited states, S₂ and S_3,4, were identified in a region hitherto associated with only one excited state. These results help to explain contradictory reports about the photoisomerization mechanism and the wavelength dependence of the quantum yield. A new model for the isomerization mechanism is proposed.

Original language	English
Pages (from-to)	8098-8099
Number of pages	2
Journal	Journal of the American Chemical Society
Volume	125
Issue number	27
DOIs	https://doi.org/10.1021/ja021363x
State	Published - Jul 9 2003

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10.1021/ja021363x

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title = "Mechanism and dynamics of azobenzene photoisomerization",

abstract = "The excited-state dynamics of trans-azobenzene were investigated by femtosecond time-resolved photoelectron spectroscopy and ab initio molecular dynamics. Two near-degenerate ππ* excited states, S2 and S3,4, were identified in a region hitherto associated with only one excited state. These results help to explain contradictory reports about the photoisomerization mechanism and the wavelength dependence of the quantum yield. A new model for the isomerization mechanism is proposed.",

author = "Thomas Schultz and Jason Quenneville and Benjamin Levine and Alessandro Toniolo and Mart{\'i}nez, \{Todd J.\} and Stefan Lochbrunner and Michael Schmitt and Shaffer, \{James P.\} and Zgierski, \{Marek Z.\} and Albert Stolow",

year = "2003",

month = jul,

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doi = "10.1021/ja021363x",

language = "English",

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T1 - Mechanism and dynamics of azobenzene photoisomerization

AU - Schultz, Thomas

AU - Quenneville, Jason

AU - Levine, Benjamin

AU - Toniolo, Alessandro

AU - Martínez, Todd J.

AU - Lochbrunner, Stefan

AU - Schmitt, Michael

AU - Shaffer, James P.

AU - Zgierski, Marek Z.

AU - Stolow, Albert

PY - 2003/7/9

Y1 - 2003/7/9

N2 - The excited-state dynamics of trans-azobenzene were investigated by femtosecond time-resolved photoelectron spectroscopy and ab initio molecular dynamics. Two near-degenerate ππ* excited states, S2 and S3,4, were identified in a region hitherto associated with only one excited state. These results help to explain contradictory reports about the photoisomerization mechanism and the wavelength dependence of the quantum yield. A new model for the isomerization mechanism is proposed.

AB - The excited-state dynamics of trans-azobenzene were investigated by femtosecond time-resolved photoelectron spectroscopy and ab initio molecular dynamics. Two near-degenerate ππ* excited states, S2 and S3,4, were identified in a region hitherto associated with only one excited state. These results help to explain contradictory reports about the photoisomerization mechanism and the wavelength dependence of the quantum yield. A new model for the isomerization mechanism is proposed.

UR - https://www.scopus.com/pages/publications/0038682666

U2 - 10.1021/ja021363x

DO - 10.1021/ja021363x

M3 - Article

AN - SCOPUS:0038682666

SN - 0002-7863

VL - 125

SP - 8098

EP - 8099

JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

IS - 27

ER -

Mechanism and dynamics of azobenzene photoisomerization

Abstract

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