Absorption spectra 2 Acetonitrile 2 Catalysis 2 Catalyst activity 2 Catalytic oxidation 2 Chemical equations 2 Crystalline materials 2 Electrocatalysis 2 Electrocatalytic activity 2 Electrolytic reduction 2 Enhanced stability 2 Ethanol oxidation 2 Fiber optic sensors 2 Films 2 Functional groups 2 Gold 2 Gold Nanoparticles 2 Gold catalysis 2 Mesoporous materials 2 Mesoporous thin films 2 Metal nanoparticles 2 Nanoparticles 2 Nitro groups 2 Nitro-group reductions 2 Phosphorescence 2 Phosphorescence emission 2 Photoacoustic effect 2 Photophysics 2 Thin films 2 Triplet state transient spectra 2