Naimhwaka, Johannes H2022-05-112022-05-112021http://hdl.handle.net/11070/3167Abstract A ruthenium bipyridyl-dye sensitizer (N) based on the naphthyl-thiazole anchoring-ancillary ligand was synthesized and characterized using spectroscopic methods of UV–Vis, 1 H NMR, FTIR and fuorescence. The functional properties of N were investigated through its photoinduced and intramolecular based charge transfer mechanisms. Subsequently, N displayed interesting charge transfer-based properties (ESIPT) that are complementary to molecular photovoltaic and chemosensing properties. The properties were investigated and studied in dimethyl sulfoxide (DMSO), due to its polar nature and solubility of the dye. Dye sensitizer exhibitions were investigated through solvatochromism efect on the optoelectronic properties, while chemosensing abilities were inspected through colorimetric activities, upon molar addition of anions. Thus, it was established that a dual functional N is a potential dye sensitizer with optoelectronic properties displaying high molar extinction coefcients in acetone. In addition, it was found that N is a colorimetric and fuorometric probe selective and sensitive to biologically important anions of CN−, F−, OH− and AcO− through fuorescence enhancement, as a result of hydrogenbonding leading to deprotonation. The sensing probe, however, displayed more strongly association with CN−. Keywords Molecular photovoltaic · Ruthenium dye sensitizer · Colorimetric probe · Solvatochromism · CN− sensoren-USMolecular photovoltaicRuthenium dye sensitizerColorimetric probeSolvatochromismCN− sensorArticle