UV laser spectroscopy of mass-selected ionic liquid building blocks in the gas-phase.
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| Title: | UV laser spectroscopy of mass-selected ionic liquid building blocks in the gas-phase. |
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| Authors: | Harvey, Andrew J.A.1, Sen, Ananya1, Yoshikawa, Naruo1, Dessent, Caroline E.H.1 caroline.dessent@york.ac.uk |
| Source: | Chemical Physics Letters. Aug2015, Vol. 634, p216-220. 5p. |
| Subjects: | Ionic liquids, Ultraviolet lasers, Electronic spectra, Fragmentation reactions, Ultraviolet spectroscopy, Absorption |
| Abstract: | We report the first UV laser action spectra of mass-selected aggregates composed of the cationic and anionic constituents of two ionic liquids, i.e. [BMIM + ] n [Tf 2 N − ] m and [EMIM + ] n [Tf 2 N − ] m where n ≠ m and n , m = 1,2. Each aggregate cluster displays a maximum absorption at 220 nm, the high energy limit scanned. However, the anionic and cationic aggregate photofragmentation cross-sections are notably different, indicating distinctive decay mechanisms. We compare our spectra to other gas-phase spectroscopic methods and discuss the general utility of our technique as a facile route to obtaining gas-phase electronic spectra of isolated ionic liquids. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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