Fig. 7: Comparison of performances in CT complexation, photochromism, and photocatalysis between cage and ligand.
From: Charge-transfer complexation of coordination cages for enhanced photochromism and photocatalysis
a UV-vis spectra of 1-BArF (100 µM) and L1-BArF (300 µM) before and after addition of BPh4− (600 µM) in CH3OH. The filled areas show the absorption increase after BPh4− addition. Insets: color after BPh4− addition. b Comparison of the absorbances for 1-BArF (100 µM) and L1-BArF (300 µM) in the presence of BPh4− (600 µM), [B(Ph-OCH3)4]− (600 µM), or I− (800 µM) in CH3OH. c UV-vis spectra of 1-BArF (190 µM) and L1-BArF (570 µM) in CH3OH before and after Xe-light irradiation for 150 s. The filled areas show the absorption increase after irradiation. Insets: color after irradiation. d Photochromic kinetics of the mixture of 1-NTf2 (65 µM) or L1-NTf2 (195 µM) with BPh4− (390 µM) or BArF− (390 µM) in CH3OH. Insets: color after irradiation. e, f, Kinetics for photooxidation of BPh4− catalyzed by 1 or L1 in CH3OH (e) and in H2O (f). Conditions: 10 mol% for 1 or 30 mol% for L1, O2, 6 W light at 400 nm.
