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. 2022 Aug 18;10(1):nwac171. doi: 10.1093/nsr/nwac171

Figure 3.

Figure 3.

Optical properties and charge dynamics analysis. (a) UV–Vis diffuse reflectance spectra of COF-BBT, COP-BBT and the model molecule; (b) HOMO and LUMO positions of COF-BBT together with the theoretical potentials of hydrogen evolution and water oxidation; (c) steady-state PL emission spectra of COF-BBT, COP-BBT and the model molecule under 400-nm excitation; (d) EPR spectra of COF-BBT and COP-BBT under visible-light irradiation (λ > 420 nm); (e) TA spectra of COF-BBT at different decay times under 525-nm excitation; (f) TA traces of ESA signals from COF-BBT and COP-BBT probed at 560 and 625 nm, respectively.