Time-resolved Stokes shift measurements of the local structural relaxation were conducted for three DNA oligonucleotides. The method relies on a probe molecule that has a large change in dipole moment in the excited state. It is found that the 30%-50% of the relaxation in the DNA oligonucleotides are faster than 40 ps, has a nonlogarithmic decay and has a sequence dependent amplitude.
|Original language||English (US)|
|Number of pages||4|
|Journal||Physical review letters|
|State||Published - Apr 15 2002|
ASJC Scopus subject areas
- Physics and Astronomy(all)