Taylor Cones of Ionic Liquids as Ion Sources: The Role of Electrical Conductivity and Surface Tension

C Larriba,G Saito,J Wilkes,I Romero-Sanz,C Bueno,J Fernandez De La Mora,S Castro,D Garoz,Y Yoshida,K Matsumoto,R Hagiwara

doi:10.1021/bk-2007-0975.ch021

Taylor Cones of Ionic Liquids as Ion Sources: The Role of Electrical Conductivity and Surface Tension

C Larriba, G Saito + Show 9 more

https://doi.org/10.1021/bk-2007-0975.ch021

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Publication Date: Aug 30, 2007

Citations: 13

Affiliation: Yale University, Kyoto University, United States Air Force Academy

#High Surface Tension #Ionic Liquids + Show 8 more

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Abstract

A purely ionic regime (PIR) of charge emission from Taylor cones of ionic liquids (ILs) held in a vacuum exists, giving ion beams of high quality. This regime is favored by ionic liquids of high electrical conductivity K and high surface tension γ. The present search for such ILs relies on an improved form of the capillary rise method using sample volumes smaller than 0.1 cm3. Prior and new observations are used to confirm the important role of both γ and K for PIR operation from conventional capillary electrospray sources.

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