Stability and reaction dynamics of trifluorinated indolylfulgides

Thomas Brust; Simone Draxler; Alexander Popp; Xi Chen; Watson J. Lees; Wolfgang Zinth; Markus Braun

doi:10.1016/j.cplett.2009.07.013

Stability and reaction dynamics of trifluorinated indolylfulgides

Thomas Brust, Simone Draxler, Alexander Popp, Xi Chen, Watson J. Lees, Wolfgang Zinth, Markus Braun

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

14 Scopus citations

Abstract

Quantum efficiencies and ultrafast dynamics of the ring-closure and ring-opening reaction of a trifluorinated dicyclopropyl indolylfulgide with improved photostability are investigated by stationary and ultrafast absorption spectroscopy. The ring-closure reaction occurs on the time scale of 200 fs and is found to be temperature independent (T = 287-333 K). However, an activated behaviour is observed for the ring-opening reaction. A comparison with the corresponding non-substituted indolylfulgide shows that the dicyclopropyl group favours the open isomer via lower cyclisation and higher cycloreversion quantum efficiencies and faster dynamics of the ring-opening reaction.

Original language	English (US)
Pages (from-to)	298-303
Number of pages	6
Journal	Chemical Physics Letters
Volume	477
Issue number	4-6
DOIs	https://doi.org/10.1016/j.cplett.2009.07.013
State	Published - Aug 6 2009
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)
Physical and Theoretical Chemistry

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10.1016/j.cplett.2009.07.013

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title = "Stability and reaction dynamics of trifluorinated indolylfulgides",

abstract = "Quantum efficiencies and ultrafast dynamics of the ring-closure and ring-opening reaction of a trifluorinated dicyclopropyl indolylfulgide with improved photostability are investigated by stationary and ultrafast absorption spectroscopy. The ring-closure reaction occurs on the time scale of 200 fs and is found to be temperature independent (T = 287-333 K). However, an activated behaviour is observed for the ring-opening reaction. A comparison with the corresponding non-substituted indolylfulgide shows that the dicyclopropyl group favours the open isomer via lower cyclisation and higher cycloreversion quantum efficiencies and faster dynamics of the ring-opening reaction.",

author = "Thomas Brust and Simone Draxler and Alexander Popp and Xi Chen and Lees, {Watson J.} and Wolfgang Zinth and Markus Braun",

note = "Funding Information: Supported by Deutsche Forschungsgemeinschaft through the DFG-Cluster of Excellence Munich-Centre for Advanced Photonics and the SFB 749. Financial support to W.J.L. from the N ih /N igms Program (SC3GM084752) is gratefully acknowledged.",

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doi = "10.1016/j.cplett.2009.07.013",

language = "English (US)",

volume = "477",

pages = "298--303",

journal = "Chemical Physics Letters",

issn = "0009-2614",

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number = "4-6",

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TY - JOUR

T1 - Stability and reaction dynamics of trifluorinated indolylfulgides

AU - Brust, Thomas

AU - Draxler, Simone

AU - Popp, Alexander

AU - Chen, Xi

AU - Lees, Watson J.

AU - Zinth, Wolfgang

AU - Braun, Markus

N1 - Funding Information: Supported by Deutsche Forschungsgemeinschaft through the DFG-Cluster of Excellence Munich-Centre for Advanced Photonics and the SFB 749. Financial support to W.J.L. from the N ih /N igms Program (SC3GM084752) is gratefully acknowledged.

PY - 2009/8/6

Y1 - 2009/8/6

N2 - Quantum efficiencies and ultrafast dynamics of the ring-closure and ring-opening reaction of a trifluorinated dicyclopropyl indolylfulgide with improved photostability are investigated by stationary and ultrafast absorption spectroscopy. The ring-closure reaction occurs on the time scale of 200 fs and is found to be temperature independent (T = 287-333 K). However, an activated behaviour is observed for the ring-opening reaction. A comparison with the corresponding non-substituted indolylfulgide shows that the dicyclopropyl group favours the open isomer via lower cyclisation and higher cycloreversion quantum efficiencies and faster dynamics of the ring-opening reaction.

AB - Quantum efficiencies and ultrafast dynamics of the ring-closure and ring-opening reaction of a trifluorinated dicyclopropyl indolylfulgide with improved photostability are investigated by stationary and ultrafast absorption spectroscopy. The ring-closure reaction occurs on the time scale of 200 fs and is found to be temperature independent (T = 287-333 K). However, an activated behaviour is observed for the ring-opening reaction. A comparison with the corresponding non-substituted indolylfulgide shows that the dicyclopropyl group favours the open isomer via lower cyclisation and higher cycloreversion quantum efficiencies and faster dynamics of the ring-opening reaction.

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DO - 10.1016/j.cplett.2009.07.013

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VL - 477

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EP - 303

JO - Chemical Physics Letters

JF - Chemical Physics Letters

SN - 0009-2614

IS - 4-6

ER -

Stability and reaction dynamics of trifluorinated indolylfulgides

Abstract

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