TY - JOUR
T1 - Solvent-enabled photodissociation of CO2- in water clusters
AU - Habteyes, Terefe
AU - Velarde, Luis
AU - Sanov, Andrei
N1 - Funding Information:
This work is supported by the NSF grant No. CHE-0134631 and the Packard Fellowship in Science and Engineering.
PY - 2006/6/24
Y1 - 2006/6/24
N2 - The photofragmentation of CO2- (H2 O)m, m = 3-20 at 355 nm yields two types of anionic products: O-(H2O)m-k, 1 ≤ k ≤ 3, and CO2- (H2 O)m - k, 4 ≤ k ≤ 9, depending on the parent cluster size. The O-(H2O)m-k fragments, attributed to the dissociation of hydrated CO2-, are dominant for m = 3-7, while the water-evaporation products, CO2- (H2 O)m - k, take precedence for m = 8-20. The dissociation of CO2- is proposed to proceed via a hydration-stabilized excited state, originating from a low-lying CO2- resonance. In the evaporation channel, the suggested routes include cluster predissociation, CO2- photodissociation/recombination, and charge transfer to solvent.
AB - The photofragmentation of CO2- (H2 O)m, m = 3-20 at 355 nm yields two types of anionic products: O-(H2O)m-k, 1 ≤ k ≤ 3, and CO2- (H2 O)m - k, 4 ≤ k ≤ 9, depending on the parent cluster size. The O-(H2O)m-k fragments, attributed to the dissociation of hydrated CO2-, are dominant for m = 3-7, while the water-evaporation products, CO2- (H2 O)m - k, take precedence for m = 8-20. The dissociation of CO2- is proposed to proceed via a hydration-stabilized excited state, originating from a low-lying CO2- resonance. In the evaporation channel, the suggested routes include cluster predissociation, CO2- photodissociation/recombination, and charge transfer to solvent.
UR - http://www.scopus.com/inward/record.url?scp=33744935304&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33744935304&partnerID=8YFLogxK
U2 - 10.1016/j.cplett.2006.04.070
DO - 10.1016/j.cplett.2006.04.070
M3 - Article
AN - SCOPUS:33744935304
SN - 0009-2614
VL - 424
SP - 268
EP - 272
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 4-6
ER -