e.g. Filippa Pettersson or Cancer Res. 75(6) , 1102-12, (2015) or 10.1002/anie.201600521
The Journal of organic chemistry
Determination of basic strength of aliphatic amines through ion pair formation in some ionic liquid solutions
F D'Anna, P Vitale, R Noto
Index: Furlong, Jorge J.; Lewkowicz, Elizabeth S.; Nudelman, Norma S. Journal of the Chemical Society, Perkin Transactions 2: Physical Organic Chemistry (1972-1999), 1990 , # 8 p. 1461 - 1465
... The Journal of Organic ... J. Org. ... absorbances, at a given wavelength of p-nitrophenol solutions in the presence and absence of amines, respectively, Δε is the variation in molar absorbitivity as a consequence of the ion pair formation, K is the equilibrium constant value, and S t is ...