Tracer caffeine diffusion in aqueous solutions at 298 K. The effect of caffeine self-association

Citation data:

Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases, ISSN: 0300-9599, Vol: 85, Issue: 2, Page: 415-419

Publication Year:
1989
Usage 39
Abstract Views 37
Link-outs 2
Citations 23
Citation Indexes 23
Repository URL:
https://ro.uow.edu.au/scipapers/4524; https://works.bepress.com/w_price/83
DOI:
10.1039/f19898500415
Author(s):
William E. Price
Publisher(s):
Royal Society of Chemistry (RSC); The Royal Society of Chemistry
Tags:
Chemistry; k; caffeine; effect; self; tracer; diffusion; association; aqueous; solutions; 298; CMMB; Life Sciences; Physical Sciences and Mathematics; Social and Behavioral Sciences
article description
Tracer diffusion coefficients for caffeine in aqueous solutions are reported for the complete caffeine solubility range (0-0.1 mol dm) at 298 K. The results show a strong concentration dependence and are interpreted in terms of caffeine self-association. On the basis of a simple equilibrium model, estimates for the diffusion coefficients of the caffeine dimer and trimer are obtained.