title: Laser photolysis of cytosine, cytidine and dCMP in aqueous solution.
abstract: Laser photolysis of cytosine and cytosine derivatives (cytidine and 2'-deoxycytidine-5'-monophosphate) using acetone as a sensitizer have been carried out in aqueous solution using a KrF laser. The absorption spectra of triplet states of cytosine and cytosine derivatives have been observed for the first time. From detailed kinetic analyses, the reaction mechanisms including triplet-triplet excitation transfer, and intramolecular excitation transfer within the exciplex arising from the interaction of triplet acetone with cytosine and cytosine derivatives, have been suggested. Accordingly, a series of kinetic parameters have also been obtained.
authors.affiliation: Laboratory of Radiation Chemistry, Shanghai Institute of Nuclear Research, China.
authors.forename: Z
authors.initials: Z
authors.lastname: Zuo
authors.forename: S
authors.initials: S
authors.lastname: Yao
authors.forename: J
authors.initials: J
authors.lastname: Luo
authors.forename: W
authors.initials: W
authors.lastname: Wang
authors.forename: J
authors.initials: J
authors.lastname: Zhang
mesh_terms: D003562:Cytidine / Q000528:radiation effects*; D003596:Cytosine / Q000528:radiation effects*; D003843:Deoxycytidine Monophosphate / Q000528:radiation effects*; D007700:Kinetics; D007834:Lasers; D010782:Photolysis; D012996:Solutions; D013053:Spectrophotometry; D013997:Time Factors
chemical_list: D012996:Solutions; D003843:Deoxycytidine Monophosphate; D003562:Cytidine; D003596:Cytosine