Tetraalkylphosphonium-based ionic liquids for a single-step dye extraction/MALDI MS analysis platform |
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| Authors: | Lovejoy Katherine S Purdy Geraldine M Iyer Srinivas Sanchez Timothy C Robertson Al Koppisch Andrew T Del Sesto Rico E |
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| Affiliation: | Materials Physics and Applications-Material Chemistry Division (MPA-MC), Los Alamos National Laboratory, Mail Stop J514, Los Alamos, New Mexico 87545, USA. |
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| Abstract: | Room temperature ionic liquids, or RTILs, based on tetraalkylphosphonium (PR(4)(+)) cations were used as the basis of a platform that enables separation of dyes from textiles, extraction of dyes from aqueous solution, and identification of the dyes by MALDI-MS in a single experimental step for forensic purposes. Ionic liquids were formed with PR(4)(+) cations and ferulate (FA), α-cyano-4-hydroxycinnamate (CHCA), and 2,5-dihydroxybenzoate (DHB) anions. The use of tetraalkylphosphonium-based ionic liquids in MALDI-MS allowed detection of small molecule dyes without addition of a traditional solid MALDI matrix. |
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