Investigation of the primary photodynamics of the aqueous formate anion.
We have investigated the primary photodynamics of the aqueous formate anion using femtosecond transient absorption spectroscopy. The formate anions are excited at 200 nm, and the resulting products are probed in the region 200-650 nm. The ultraviolet part of the transient spectrum compares favorably with that of O-(aq). However, its counter radical, HCO(aq), is not observed. In the visible region hydrated electrons are observed. The electrons are produced from photodetachment of the formate anions and from two-photon ionization of water.
Petersen
Christian
C
Department of Chemistry, University of Aarhus, Langelandsgade 140, DK-8000 Aarhus C, Denmark. chrp@chem.au.dk
Thøgersen
Jan
J
Jensen
Svend Knak
SK
Keiding
Søren Rud
SR
D000838:Anions / Q000737:chemistry*; D004583:Electrons; D005561:Formates / Q000737:chemistry*; D007700:Kinetics; D008956:Models, Chemical; D010777:Photochemistry; D010782:Photolysis; D013056:Spectrophotometry, Ultraviolet; D014867:Water / Q000737:chemistry*
D000838:Anions; D005561:Formates; D014867:Water