Infrared laser desorption of hydroquinone from a water-ethanol liquid beam
Access Status
Authors
Date
2003Type
Metadata
Show full item recordCitation
Source Title
ISSN
Collection
Abstract
We have investigated the 1.9-mum IR desorption of hydroquinone in a water/ethanol liquid beam under relatively high desorption laser fluences (1316 and 2632 mJ cm(-2) pulse(-1)). The appearance of the IR desorption/UV ionization TOF mass spectrum of hydroquinone (HQ) is interpreted in terms of dissociation of solvated HQ clusters during the ionization event. The maximum in the hydroquinone desorption velocity distribution is 300 ms-1, and the translational temperature of the desorbed species is approximately 1500 K. We see no evidence for an acoustic compression - ejection mechanism, suggesting that such a process is operative at desorption laser fluences lower than employed here. Our results suggest a general mechanism for the high-powered IR desorption from a liquid beam whereby desorbed species are ejected into the vacuum possessing considerable translational energy but remain internally cool.
Related items
Showing items related by title, author, creator and subject.
-
Ji, X.; Banks, C.; Silvester, Debbie; Wain, A.; Compton, R. (2007)The oxidation of hydroquinone and reduction of benzoquinone have been studied by cyclic voltammetry at glassy carbon electrodes in propylene carbonate. Diffusion coefficients of the different species obtained from ...
-
Criquet, J.; Rodriguez, E.; Allard, Sebastian; Wellauer, S.; Salhi, E.; Joll, C.; von Gunten, U. (2015)Phenolic compounds are known structural moieties of natural organic matter (NOM), and their reactivity is a key parameter for understanding the reactivity of NOM and the disinfection by-product formation during oxidative ...
-
Nguyen, Thanh Vinh (2010)Thirty years ago, cyclobutenediones were only studied as theoretically interesting molecules without much thought towards their potential use in building complex structures.[1–3] Late in the 1980s, these compounds started ...