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. Author manuscript; available in PMC: 2019 Jan 27.
Published in final edited form as: J Am Chem Soc. 2018 Sep 21;140(39):12622–12633. doi: 10.1021/jacs.8b08436

Table 1. Photophysical Properties of Nucleoside 1 in Different Microenvironments.

solvent λmaxa (nm) λem (nm) Stokes shift (cm−1) Irelb Φc τavc (ns) rc
water 322 437 8.17 × 103 1.00 0.11 0.84 0.03
methanol 322 418 7.13 × 103 0.43 0.04 0.33 n.d.
dioxane 324 400 5.86 × 103 0.36 0.03 0.31 n.d.
ethylene glycol 325 420 6.96 × 103 1.79 0.20 0.94 0.20
glycerol 326 424 7.09 × 103 4.39 0.52 2.36 0.34
a

Lowest energy absorption maximum is given.

b

Relative emission intensity at λem is given with respect to intensity in water.

c

Standard deviation for quantum yield (Φ), average lifetime (τav), and anisotropy (r) in different solvents is ≤0.005, ≤0.02 ns, and ≤0.003, respectively. n.d. = not determined.