Jump to main content
Jump to site search

Issue 4, 2009
Previous Article Next Article

Wavelength and solvent independent photochemistry: the electrocyclic ring-closure of indolylfulgides

Author affiliations

Abstract

A wavelength and solvent dependent study of a photochromic indolylfulgide is presented. The ring-closure reaction is characterized using stationary and time-resolved spectroscopy with femtosecond time resolution. After excitation into the first excited singlet state (S1) the photoprocesses proceed on ultrafast timescales (0.3–0.45 ps) in both polar and non-polar solvents. Excitation into higher electronic states results in similar reaction kinetics as found for S1 excitation. A simple kinetic scheme can be established for the photoprocesses under all different experimental conditions: as expected from organic textbooks neither the solvent surroundings nor the excitation wavelength strongly alter the reaction scheme. The experimental study demonstrates that the ring-closure reaction of photochromic indolylfulgides can be considered as a very robust photoprocess: this fact may lead to a great variety of different applications where the reaction dynamics of the molecular switch are not disturbed by any surrounding effects.

Graphical abstract: Wavelength and solvent independent photochemistry: the electrocyclic ring-closure of indolylfulgides

Back to tab navigation

Publication details

The article was received on 07 Oct 2008, accepted on 26 Jan 2009 and first published on 11 Feb 2009


Article type: Paper
DOI: 10.1039/B817627B
Photochem. Photobiol. Sci., 2009,8, 528-534

  •   Request permissions

    Wavelength and solvent independent photochemistry: the electrocyclic ring-closure of indolylfulgides

    T. Cordes, T. T. Herzog, S. Malkmus, S. Draxler, T. Brust, J. A. DiGirolamo, W. J. Lees and M. Braun, Photochem. Photobiol. Sci., 2009, 8, 528
    DOI: 10.1039/B817627B

Search articles by author

Spotlight

Advertisements