https://doi.org/10.15407/spqeo2.04.091
PACS: 42.79.K
Development of personal biodosimeter of UV radiation based on vitamin D photosynthesis in nematic liquid crystal matrix
A. G. Dyadyusha, I. A. Gvozdovsky, E. N. Salkova, I. P. Terenetskaya
Semiconductor Physics, Quantum Electronics and Optoelectronics - 1999. - 2, ¹4.-P.91-95.-Engl. Il.: 4. Ref.: 11.
Abstract. A new approach to the problem of personal UV biodosimeter is described. Nematic liquid crystal (LC-805) is converted into induced cholesteric phase using photosensitive chiral dopant of steroid biomolecules (7-dehydrocholesterol (provitamin D3) or 7-DHC-benzoate). Significant changes in optical characteristics of the LC films depending on the duration of UV exposure are observed as a result of UV initiated photoisomerizations that change helical twisting power of dopant molecules.
Keywords: UV dosimetry, photoresponsive materials, liquid crystals, provitamin D photoisomerization.
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