Polysulfone as a scintillation material without doped fluorescent molecules

Irradiation-responsive polysulfone film as a colorimetric UVA/UVB differentiator

“…In 2015 Nakamura et al reported the emission of a Indigoblue light of a dense PSU film, with maximum emission spectra at 380 nm when excited at 340 nm maximum. 9 Despite this observation, the first dose-response curve, was obtained after irradiation at 297 AE 5 nm. 12 A careful analysis of excitation spectra of PSU shows a low intense band at close 295 nm, together with the expected intense excitation band at 325 nm (Fig.…”

“…In terms of fluorescence, PSU absorbs light close to 340 nm and emits an Indigo-blue fluorescence at 380 nm. 9 The potential use of PSU as dosimeter for measuring solar UV radiation was studied by A. Davis, B. L. Diffey and G. H. W. Dean after detecting film darkening under ultraviolet radiation, attributed to degradation and loss of tensile properties. 10 Simultaneously, the broad absorption band in the near ultraviolet, extended to visible, with increment relatable with the incident ultraviolet dose.…”

“…In terms of fluorescence, PSU absorbs light close to 340 nm and emits an Indigo-blue fluorescence at 380 nm. 9…”