UV laser spectroscopy of mass-selected ionic liquid building blocks in the gas-phase

TY - JOUR

T1 - UV laser spectroscopy of mass-selected ionic liquid building blocks in the gas-phase

AU - Harvey, Andrew J A

AU - Sen, Ananya

AU - Yoshikawa, Naruo

AU - Dessent, Caroline E H

PY - 2015/8/1

Y1 - 2015/8/1

N2 - 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[Tf2N-]m and [EMIM+]n[Tf2N-]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.

AB - 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[Tf2N-]m and [EMIM+]n[Tf2N-]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.

UR - http://www.scopus.com/inward/record.url?scp=84933054149&partnerID=8YFLogxK

U2 - 10.1016/j.cplett.2015.06.023

DO - 10.1016/j.cplett.2015.06.023

M3 - Article

AN - SCOPUS:84933054149

SN - 0009-2614

VL - 634

SP - 216

EP - 220

JO - Chemical Physics Letters

JF - Chemical Physics Letters

ER -