Table 1.

Numerical summary of electron transfer data

	Metal oxide species (acceptor)
CdSe diam., nm (donor)	SnO2		TiO2		ZnO
	-ΔG, eV	kET, s-1	-ΔG, eV	kET, s-1	-ΔG, eV	kET, s-1
2.8	0.56	2.77 × 1011	0.085	1.68 × 1011	0.037	1.15 × 1011
3.3	0.53	2.69 × 1011	0.057	6.02 × 1010	0.0092	7.26 × 1010
4.0	0.52	2.42 × 1011	0.047	7.18 × 1010	−0.00091	3.10 × 1010
4.2	0.49	4.62 × 1011	0.020	5.07 × 1010	−0.028	1.86 × 1010

Values for -ΔG and k_ET were computed from Eqs. 4 and 5, respectively.