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. Author manuscript; available in PMC: 2012 Apr 25.
Published in final edited form as: J Phys Chem B. 2008 Dec 11;112(49):15646–15650. doi: 10.1021/jp807556x

TABLE 1.

Stern–Volmer Quenching Constants as a Function of Coverage of 1 onto Porous Vycor Glass or of 1 in Fluid Water Solution

photosens absorbance
λ520 		KD (M−1) KS (M−1) kq
(M−1 s−1)
1-adsa,b 0.87 23700 ± 1320 1310 ± 210 4.2 × 108
1-adsa,c 0.25 26500 ± 1220 510 ± 60 4.6 × 108
1-adsa,d 0.025 32100 ± 1460 650 ± 80 5.6 × 108
1 in fluid H2Oe ~0.2 89600 ± 2600 1160 ± 170 1.8 × 109
a

The PVG/1 samples were immersed in water.

b

Sample contained 0.9 × 10−6 mol 1 adsorbed onto PVG.

c

Sample contained 0.9 × 10−7 mol 1 adsorbed onto PVG.

d

Sample contained 0.9 × 10−8 mol 1 adsorbed onto PVG.

e

Homogeneous 1 in deionized water solution.