Photochromic Bis(thiophen-3-yl)maleimides Studied with Time-Resolved Spectroscopy

C. Elsner; T. Cordes; P. Dietrich; M. Zastrow; T.T. Herzog; K. Rück-Braun; W. Zinth

doi:10.1021/jp806945m

Photochromic Bis(thiophen-3-yl)maleimides Studied with Time-Resolved Spectroscopy

C. Elsner, T. Cordes, P. Dietrich, M. Zastrow, T.T. Herzog, K. Rück-Braun, W. Zinth

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Abstract

The dynamics of the ring-closure reaction of three different bis(thiophen-3-yl)maleimides are investigated using ultrafast spectroscopy in the visible range. The structures of the molecules differ with respect to substitution of the thiophene ring and the maleimide. The experiments reveal reaction kinetics which point to the population of an excited electronic state for several nanoseconds. In the case of completely unsubstituted thiophene rings, a long excited-state lifetime (biexponential decay with 3 and 15 ns) can be observed. The remaining ultrafast absorption transients of this molecule are due to relaxational processes on the excited electronic potential energy surface. The ring-closure reaction has a small yield (

Original language	English
Pages (from-to)	1033-1039
Number of pages	7
Journal	The Journal of Physical Chemistry. A: Molecules, Spectroscopy, Kinetics, Environment, & General Theory
Volume	113
Issue number	6
DOIs	https://doi.org/10.1021/jp806945m
Publication status	Published - 2009

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title = "Photochromic Bis(thiophen-3-yl)maleimides Studied with Time-Resolved Spectroscopy",

abstract = "The dynamics of the ring-closure reaction of three different bis(thiophen-3-yl)maleimides are investigated using ultrafast spectroscopy in the visible range. The structures of the molecules differ with respect to substitution of the thiophene ring and the maleimide. The experiments reveal reaction kinetics which point to the population of an excited electronic state for several nanoseconds. In the case of completely unsubstituted thiophene rings, a long excited-state lifetime (biexponential decay with 3 and 15 ns) can be observed. The remaining ultrafast absorption transients of this molecule are due to relaxational processes on the excited electronic potential energy surface. The ring-closure reaction has a small yield (",

author = "C. Elsner and T. Cordes and P. Dietrich and M. Zastrow and T.T. Herzog and K. R{\"u}ck-Braun and W. Zinth",

note = "Relation: http://www.rug.nl/fmns-research/zernike/index Rights: University of Groningen, Zernike Institute for Advanced Materials",

year = "2009",

doi = "10.1021/jp806945m",

language = "English",

volume = "113",

pages = "1033--1039",

journal = "The Journal of Physical Chemistry. A: Molecules, Spectroscopy, Kinetics, Environment, & General Theory",

issn = "1520-5215",

publisher = "AMER CHEMICAL SOC",

number = "6",

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TY - JOUR

T1 - Photochromic Bis(thiophen-3-yl)maleimides Studied with Time-Resolved Spectroscopy

AU - Elsner, C.

AU - Cordes, T.

AU - Dietrich, P.

AU - Zastrow, M.

AU - Herzog, T.T.

AU - Rück-Braun, K.

AU - Zinth, W.

N1 - Relation: http://www.rug.nl/fmns-research/zernike/index Rights: University of Groningen, Zernike Institute for Advanced Materials

PY - 2009

Y1 - 2009

N2 - The dynamics of the ring-closure reaction of three different bis(thiophen-3-yl)maleimides are investigated using ultrafast spectroscopy in the visible range. The structures of the molecules differ with respect to substitution of the thiophene ring and the maleimide. The experiments reveal reaction kinetics which point to the population of an excited electronic state for several nanoseconds. In the case of completely unsubstituted thiophene rings, a long excited-state lifetime (biexponential decay with 3 and 15 ns) can be observed. The remaining ultrafast absorption transients of this molecule are due to relaxational processes on the excited electronic potential energy surface. The ring-closure reaction has a small yield (

AB - The dynamics of the ring-closure reaction of three different bis(thiophen-3-yl)maleimides are investigated using ultrafast spectroscopy in the visible range. The structures of the molecules differ with respect to substitution of the thiophene ring and the maleimide. The experiments reveal reaction kinetics which point to the population of an excited electronic state for several nanoseconds. In the case of completely unsubstituted thiophene rings, a long excited-state lifetime (biexponential decay with 3 and 15 ns) can be observed. The remaining ultrafast absorption transients of this molecule are due to relaxational processes on the excited electronic potential energy surface. The ring-closure reaction has a small yield (

U2 - 10.1021/jp806945m

DO - 10.1021/jp806945m

M3 - Article

SN - 1520-5215

VL - 113

SP - 1033

EP - 1039

JO - The Journal of Physical Chemistry. A: Molecules, Spectroscopy, Kinetics, Environment, & General Theory

JF - The Journal of Physical Chemistry. A: Molecules, Spectroscopy, Kinetics, Environment, & General Theory

IS - 6

ER -

Photochromic Bis(thiophen-3-yl)maleimides Studied with Time-Resolved Spectroscopy

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