Fig. 10. The energetic overlap of the initially-formed Frack-Condon state (¹MLCT) and the photoluminescence ³MLCT with the acceptor states in anatase TiO₂ at pH 1. Intersystem crossing (isc) and internal conversion (ic) compete kinetically with excited-state injection. Inset shows the structure of a Ru(ii) sensitizer undergoing excited-state injection. Adapted with permission from ref. 68. Copyright 2016 American Chemical Society.