Abstract
The dye of 2, 7-dimethyl-3, 6-diazacyclohepta-1, 6-diene perchlorate (dye 1) and chlorination of 2, 7-dimethyl-3, 6-diazacyclohepta-1, 6-diene perchlorate (dye 2) were prepared and characterized. The dye 2 molecules were introduced into the polyvinyl alcohol (PVA) films to produce solid ultraviolet (UV) filters. UV spectroscopy measurements were carried out to investigate the optical properties of UV filters. The UV filter exhibited high transmittance within solar blind spectral region (240–280 nm) and a strong absorption band occurred between 300 and 375 nm. The detection experiment results of corona discharge show that the UV filter can be used for solar blind detection.
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