. Author manuscript; available in PMC: 2021 Feb 25.

Published in final edited form as: J Am Chem Soc. 2020 Dec 23;143(1):176–183. doi: 10.1021/jacs.0c07879

Table 1.

Emission lifetime data (τ_obs) for various photoβ₂:α₂ combinations and calculated k_CS rates of F_nY₃₅₆ oxidation relative to Y₃₅₆ of E₅₂Q-photoβ₂ in complex with either wt or Y₇₃₁F-α₂.

Entry	photoβ₂	α₂	pH	τ_obs (ns)^a	k_CS (10⁵ s^–1)^a
1	Y₃₅₆F	Y₇₃₁F	7.6	730 (10)^{b, c}	k₀
2	Y₃₅₆	Y₇₃₁F	7.6	590 (20)^c	3.3 (1)
3	E₅₂Q	Y₇₃₁F	7.6	617(5)	0.6(3)
4	E₅₂Q	wt	7.6	622(2)	0.5(3)
5	E₅₂Q/Y₃₅₆F	Y₇₃₁F	7.6	642(6)	k₀
6	E₅₂Q/Y₃₅₆F	wt	7.6	632(8)	n.a.^d
7	E₅₂Q/ 3,5-F₂Y₃₅₆	Y₇₃₁F	8.2	590(1)	1.4(2)
8	E₅₂Q/ 3,5-F₂Y₃₅₆	wt	8.2	553(2)	2.5(3)
9	E₅₂Q/ 3,5-F₂Y₃₅₆	Y₇₃₁F	7.6	596(4)	1.2(4)
10	E₅₂Q/ 3,5-F₂Y₃₅₆	wt	7.6	572(5)	1.9(4)
11	E₅₂Q/2,3,5-F₃Y₃₅₆	Y₇₃₁F	7.6	602(1)	1.0(2)
12	E₅₂Q/2,3,5-F₃Y₃₅₆	wt	7.6	543(3)	2.8(3)

The rate laws and accompanying photophysical schemes that describe τ_obs and k_CS for the various photoβ₂ systems are given in Figure S1.

Used as τ₀ in the calculation of k_CS per Eq. 2.

Values obtained from reference 27.

Not applicable.