. 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	λ_max^a (nm)	λ_em (nm)	Stokes shift (cm⁻¹)	I_rel^b	Φ^c	τ_av^c (ns)	r^c
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

Lowest energy absorption maximum is given.

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

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