Two-photon-induced cycloreversion reaction of coumarin photodimers

Title data

Kim, H. C. ; Kreiling, Stefan ; Greiner, Andreas ; Hampp, Norbert:
Two-photon-induced cycloreversion reaction of coumarin photodimers.
In: Chemical Physics Letters. Vol. 372 (2003) Issue 5-6 . - pp. 899-903.
ISSN 1873-4448
DOI: https://doi.org/10.1016/S0009-2614(03)00535-9

Official URL:

Abstract in another language

Photochemical reactions induced by two-photon-absorption processes offer several advantages over common one-photon initiated photoreactions, e.g., three-dimensional spatial control. We present the photocleavage reaction of coumarin photodimers via a two-photon process using pulsed frequency-doubled Nd:YAG-laser light. The two-photon-induced cycloreversion reaction leads selectively to the cleavage of the coumarin photodimers resulting in the formation of monomeric coumarin molecules. The two-photon cross section of the coumarin photodimer was determined to be of 1.6 x 10(-52) cm(4) s photon(-1). The presented reaction is of interest, e.g., for the photo-triggered release of chemicals in areas which cannot be directly optically addressed due to cover layers which have a high absorption at the single-photon-absorption wavelength. (C) 2003 Elsevier Science B.V. All rights reserved.

Further data

Item Type:	Article in a journal
Refereed:	Yes
Keywords:	PHOTOPOLYMERIZATION
Institutions of the University:	Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II > Chair Macromolecular Chemistry II - Univ.-Prof. Dr. Andreas Greiner Faculties Faculties > Faculty of Biology, Chemistry and Earth Sciences Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II
Result of work at the UBT:	No
DDC Subjects:	500 Science > 540 Chemistry
Date Deposited:	14 Apr 2015 08:20
Last Modified:	07 Sep 2023 11:37
URI:	https://eref.uni-bayreuth.de/id/eprint/9745