Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Proposed mechanism of photosensitized T〈〉T dimerization in the triplet state. (i) Triplet–triplet energy transfer (TTET) from the photosensitizer (PS) to thymine–thymine, (ii) vibrational relaxation (VR) in T 1, (iii) 3BR formation by overcoming an energy barrier, (iv) intersystem crossing (iv), and (v) formation of thymine dimer or return to the Franck–Condon (FC) region in the electronic ground state
