Journal
FARADAY DISCUSSIONS
Volume 163, Issue -, Pages 159-171Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3fd20149j
Keywords
-
Categories
Funding
- National Science Foundation [CHE-0718219, CHE-1150660]
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [1150660] Funding Source: National Science Foundation
Ask authors/readers for more resources
The excited and ground state dynamics of a series of 1,3-cyclohexadiene derivatives and their hexatriene photoproducts are studied using ultrafast broadband UV-visible transient absorption spectroscopy. The substitution pattern around the cyclohexadiene backbone alters the excited state potential energy surface in the Franck-Condon region as evidenced by changes in the excited state absorption and fluorescence properties of the systems. Unsubstituted 1,3-cyclohexadiene and alpha-phellandrene exhibit no excited state absorption while a strong excited state absorption in the visible spectral region is observed for both alpha-terpinene and Provitamin D-3. Steric factors introduced by the ring substitutions determine the dominant rotational isomer at equilibrium for the hexatriene photoproducts. Coupling to the solvent during the conformational relaxation from the initial helical all-cis hexatriene is unique to each photoproduct, but the relaxation process occurs on a 6-10 ps timescale regardless of the size or substitution pattern on the triene.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available