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Photoinduced dissociation of cyclobutane thymine dimer studied by semiclassical dynamics simulation

Paper ID Volume ID Publish Year Pages File Format Full-Text
30962 44522 2010 6 PDF Available
Title
Photoinduced dissociation of cyclobutane thymine dimer studied by semiclassical dynamics simulation
Abstract

Photoinduced dissociation of the thymine dimer is studied in a semiclassical dynamics simulation. The simulation follows excitation of an isolated thymine dimer by a 25 fs fwhm laser pulse, and finds that dissociation proceeds via an asynchronously concerted mechanism, in which the C5–C5′ bond breaks soon after application of the laser pulse, followed by cleavage of the C6–C6′ bond. The dissociation results in two thymine monomers, one in an electronically excited state and the other in the ground state. The former decays to the electronic ground state through an avoided crossing induced by deformation of the pyrimidine ring at the C5′ and C6′ sites.

Keywords
Cyclobutane thymine dimer; Photoinduced dissociation; Semiclassical dynamics simulation
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Photoinduced dissociation of cyclobutane thymine dimer studied by semiclassical dynamics simulation
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology B: Biology - Volume 101, Issue 1, 5 October 2010, Pages 31–36
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
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Full-text PDF Download
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