Thermally irreversible photoinduced shift of selective light reflection in 1D cholesteric photonic structure

Martin Cigl; Vera Hamplova; Vladimira Novotna

doi:10.1117/12.3029556

20 June 2024 Thermally irreversible photoinduced shift of selective light reflection in 1D cholesteric photonic structure

Martin Cigl, Vera Hamplova, Vladimira Novotna

Author Affiliations +

Proceedings Volume PC13006, Biomedical Spectroscopy, Microscopy, and Imaging III; PC130060Z (2024) https://doi.org/10.1117/12.3029556
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Abstract

Design and synthesis of photosensitive 1D photonic system based on cholesteric liquid crystalline polymer will be presented. The photosensitivity and chirality is provided by a novel chiral hydrazone photochromic moiety covalently boud to the polymer backbone of a comb-shaped copolymer. Combination of the chirality and photosensitivity enabled reversible photomanipulation of the helical pitch of the supramolecular cholesteric structure resulting in material with a tunable selective reflection of circularly polarized light of the same helical sense as the chiral structure. In contrast to many other photochromic systems based on E-Z isomerization, the E and Z isomers of hydrazone photochromic group are kinetically stable that enable to achieve a pure photoinduced switch without any dark relaxation at any temperatures

Conference Presentation

Citation Download Citation

Martin Cigl, Vera Hamplova, and Vladimira Novotna "Thermally irreversible photoinduced shift of selective light reflection in 1D cholesteric photonic structure", Proc. SPIE PC13006, Biomedical Spectroscopy, Microscopy, and Imaging III, PC130060Z (20 June 2024); https://doi.org/10.1117/12.3029556

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