1,10-Bis(diphenylamino)-4,6-decadiyne as an active component of a radiochromic film dosimeter

Gamma-irradiation processes are very important tools for minimizing microbial load in dry food, inhibiting the proliferation of T-lymphocytes blood, and sterilization medical devices. To this end, a composite film dosimeter made radiation-sensitive monomer, 1,10-bis(diphenylamino)-4,6-decadiyne (DPD), embedded poly(vinyl alcohol) was prepared using an automatic applicator system. This polymeric undergoes color change from pale yellow to deep orange upon γ-irradiation due topochemical polymerization DPD monomer. is proportional amount absorbed dose. With increasing doses, gradual disappearance νC≡C Raman band C≡C-C≡C chemical groups observed, new νC=C bands ascribed formation polydiacetylene with enyne structure detected. The irradiated films exhibited two absorption maxima at 470 502 nm as measured by UV-Vis spectrophotometry, intensities these increased doses. Analysis high-resolution flatbed scanner (2400 dpi) showed increase optical density doses up 269.1 kGy. Stability studies revealed that underwent intensity ∼3.1% over 50 days storage. In addition, relative humidities range 0–75.3% had limited impact on dose response films, 4% range. uncertainty (2σ) measurements 4.46%, demonstrating effectiveness radiation monitoring 296.1