Tetraalkylphosphonium-based ionic liquids for a single-step dye extraction/MALDI MS analysis platform

Katherine S. Lovejoy, Geraldine M. Purdy, Srinivas Iyer, Timothy C. Sanchez, Al Robertson, Andrew T. Koppisch, Rico E. Del Sesto

Research output: Contribution to journalArticlepeer-review

21 Scopus citations


Room temperature ionic liquids, or RTILs, based on tetraalkylphosphonium (PR4+) 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 PR4 + 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.

Original languageEnglish (US)
Pages (from-to)2921-2930
Number of pages10
JournalAnalytical Chemistry
Issue number8
StatePublished - Apr 15 2011

ASJC Scopus subject areas

  • Analytical Chemistry


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