Table 1. Amphiphile Mole Fractions in Binary Aqueous Mixtures Wherein Abrupt Changes Occur in the Steady-State UV–Vis Absorption Spectral Properties and Dynamical Quantities (Average Rate of Population and/or Rotational Relaxations) from Time-Resolved Fluorescence Measurements Employing Neutral Dipolar Fluorophores.

cosolvent	Xcosolventmin (UV–vis absorption)	Xcosolventdyn (abrupt changes in dynamics)
2-butoxyethanol29 (2-BE)	0.02	0.04
tertiary butanol (TBA)28,30−32	0.04	0.1
tetrahydrofuran (THF)33	0.05	0.1
dioxane33	0.07	0.15
tetramethylurea (TMU)34	0.08	0.2
ethanol28	0.1	0.2