The UV/VIS spectrophotometric scans were obtained to determine the opto-electronic properties of 2-oxo-2-(1-oxo-1H-isochromen-3-yl)ethyl methacrylate (other name: 2-(isocoumarin-3-yl)-2-oxoethyl methacrylate) compound thin film. refractive index at 700 nm was found be 1.61. values real part dielectric constant higher than those imaginary part. results indicated that electronic transition respon...