Luminescent monitoring the state of dichroic complexes in polaroids based on polyvinyl alcohol

Abstract

In this work, to control the content of dichroic complexes in film polarizers based on polyvinyl alcohol, a luminescent technique is proposed that allows us to estimate: the ratio of molecular and paired iodine centers in H-type polarizers at T = 4.2 K; of dichroic complexes caused by molecular and aggregated forms of the dye in L-type polarizers at T = 300 K. The use of this technique will make it possible in the future to establish the dependence of the properties of polarizers on the structure of dichroic complexes, not only in H-type or L-type film polarizers but also in mixed (H + L)-type polarizers, to create polarizers of various spectral ranges.