Diffusion-controlled reactions in room temperature ionic liquids

Charles M. Gordon, Andrew J. McLean, Mark J. Muldoon, Ian R. Dunkin

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

12 Citations (Scopus)


Laser flash photolysis has been used to determine bimolecular rate constants for the reaction of triplet excited state benzophenone with naphthalene in a range of room temperature ionic liquids. Comparison of the activation energies for this reaction with the activation energies for viscous flow indicated that the reaction operates under diffusion control in all liquids and at all temperatures studied. Using these data, we have obtained values for the limiting bimolecular rate constants between neutral reactants in these novel solvents. The importance of reliable kd values in mechanistic studies is illustrated by a photochemical Diels Alder reaction. We also report the experimental procedures necessary for the preparation of colourless "spectroscopic grade" ionic liquids.
Original languageEnglish
Title of host publicationIonic Liquids as Green Solvents
PublisherACS Publications
Number of pages13
ISBN (Electronic)9780841219618
ISBN (Print)9780841238565
Publication statusPublished - 26 Aug 2003

Publication series

NameACS Symposium Series
PublisherAmerican Chemical Society
ISSN (Print)0097-6156
ISSN (Electronic)1947-5918


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