
TY  - JOUR
A1  - Easteal, AJ 
T1  - A Luminescent Probe Study of Water/Acetonitrile Mixtures
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1979
VL  - 32
IS  - 2
SP  - 271
EP  - 275
KW  - 
UR  - https://doi.org/10.1071/CH9790271 
N2  - Luminescence spectra for 1.0 &#215; 10-2 mol dm-3 solutions of salicylic acid in water, acetonitrile and water/acetonitrile mixtures have been determined. In the wavelength range 300-600 nm, all spectra showed a single broad emission band. The variations of the wavelength of maximum luminescence intensity (&#955;max) and luminescence band half-width (&#916;½) with solvent composition are similar to the composition dependence of these parameters observed previously for solutions of salicylic acid in water/alcohol mixtures. The invariance of &#916;½ with acetonitrile content up to approximately 15 mole% supports earlier conclusions that up to c. 15 mole% acetonitrile is accommodated within cavities in the water structure. The rapid increase in near 15 mole% acetonitrile provides further evidence for a progressive destruction of the water structure as the acetonitrile content is increased beyond c. 15 mole%. 
ER  -

