Photochemical Fate: The First Step Determines Efficiency of H₂ Formation with a Supramolecular Photocatalyst

Tuning of photocatalytic activity by creating a tridentate coordination sphere for palladium

“…Apparently, this is the case as the obtained excitation spectrum shows an maximum at 416 nm in the visible range identical to the absorption spectrum. Taking this experimental evidence and the results of the theoretical calculations into account an interesting conclusion can be drawn: obviously the excitation at 416 nm not only leads to the conventional MLCT states transferring electron density to the phen moiety, 43 but also the ILCT state significantly contributes to the population of the emissive MLCT state.…”

“…It was shown by several groups that B3LYP provides a balanced description of the absorption features of such complexes. 43,65 The absorption spectra were simulated by determining the excitation energies and oscillator strengths of the 100 lowest singlet excited states. The effects of the interaction with a solvent (acetonitrile, ε = 35.688, n = 1.344) on the geometry, frequencies, excitation energies and excited state gradients were taken into account by the integral equation formalism of the polarizable continuum model.…”

Ruthenium Imidazophenanthrolinium Complexes with Prolonged Excited‐State Lifetimes

“…A direct correlation between the number of bbip ligands attached to the ruthenium center and the reduced susceptibility of the corresponding excited-state lifetimes to the presence of 3 O 2 as a potential triplet metal-to-ligand charge-transfer ( 3 MLCT) excited-state quencher is discussed. As the location of the first excited state plays an important role in determining the deactivation pathways and the photocatalytic activity, [31] we elucidated this important aspect through resonance Raman spectroscopy.…”

Energy Transfer in a Hybrid IrIII Carbene–PtII Acetylide Assembly for Efficient Hydrogen Production

“…[7][8][9][10][11][12][13][14][15] However,i fi ti sp ossible to sensitize catalytic sites by means of unidirectional energy transfer powering the intermolecular electron-transfer process, which is ak ey step in natural photosynthetic reactions, [26] improving features of these assembles for use in photocatalysis may become feasible.…”