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. Author manuscript; available in PMC: 2020 Jan 1.
Published in final edited form as: J Phys Chem. 1990 Nov 1;94(22):8413–8416. doi: 10.1021/j100385a011

TABLE I:

Indole Decay Times and D-to-A Diffusion Coefficients in Propylene Glycol and Methanol at 20 °C

solvent [A] eq no. τD, ns R0, Å 106D, cm2/s χR2
propylene glycol 0 1 4.23 1.4
12 mM 1 2.57 92.8
2 〈4.23〉 24.9 4.1
2 〈4.23〉 〈24.3〉a 10.6
5 〈4.23〉 23.9 1.03 0.9
5 〈4.23〉 〈24.3〉 0.62 1.3
methanol 0 1 4.09 2.4
5 mM 1 2.03 30.7
2 〈4.09〉 37.1 95.8
2 〈4.09〉 〈26.1〉 1152.1
5 〈4.09〉 27.8 26.4 1.8
5 〈4.09〉 〈26.1〉 34.0 3.1
a

〈 〉indicates that the parameter was held fixed during the analysis.