Table 2. Various Fluorescence Quenching Parameters of [2AHBC] in ACN + DXN Solvent Mixtures.

solvent mixture (% v/v)	εa	KSVb (M–1)	(kq × 10–9)c (M–1 s–1)	[(1 – w)/Q]dI	(W)e	(V)f (M–1)	(r)g (Å)
100% ACN + 0% DXN	36.000	14.516	13.196	4.420	0.558–0.912	6.119	13.430
80% ACN + 20% DXN	28.600	8.274	7.522	5.509	0.449–0.889	8.499	14.990
60% ACN + 40% DXN	22.000	7.820	7.109	3.804	0.619–0.924	4.985	12.550
40% ACN + 60% DXN	15.300	7.248	6.589	5.445	0.455–0.891	8.340	14.890
20% ACN + 80% DXN	8.100	4.852	4.411	4.644	0.535–0.907	6.563	13.750
0% ACN + 100% DXN	2.100	2.545	2.314	5.498	0.450–0.890	8.472	14.970

^aDielectric constant of ACN + DXN solvent mixture.

^bS-V quenching constant.

^cBimolecular quenching rate constant.

^dIntercept.

^eUnquenched complex.

^fStatic quenching constant.

^gKinetic distance.