Chalcones and cyanopyridine derivatives have emerged as attractive light sensitive materials, with potential use in cell probing and optoelectronic applications. They are highly fluorescent both in solution and solid state and thus well-suited for OLED applications. Besides being suitable for promising biological activities such as anticancer, antimicrobial, antidepressant, immunosuppressive, anti-inflammatory, etc., chalcone and its derivatives have displayed numerous other properties like optical, photochemical and NLO properties, and have been used as fluorescent dyes, in light emitting diodes, fluorescent sensors and as fluorescent probes. As a member of the p-conjugated system, the optical properties of chalcone and its derivatives, have received considerable attention owing to its nonlinear optical and fluorescence property, due to the delocalization of electronic charge and overlapping p orbitals. lg...