Počet záznamů: 1
Large thermally irreversible photoinduced shift of selective light reflection in hydrazone-containing cholesteric polymer systems
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SYSNO ASEP 0573328 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Large thermally irreversible photoinduced shift of selective light reflection in hydrazone-containing cholesteric polymer systems Tvůrce(i) Boychuk, A. (RU)
Shibaev, V. (RU)
Cigl, Martin (FZU-D) RID, ORCID
Hamplová, Věra (FZU-D) RID, ORCID, SAI
Novotná, Vladimíra (FZU-D) RID, ORCID, SAI
Bobrovsky, A. (RU)Celkový počet autorů 6 Číslo článku e202300011 Zdroj.dok. ChemPhysChem. - : Wiley - ISSN 1439-4235
Roč. 24, č. 11 (2023)Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova cholesteric mesophase ; helical twisting power ; hydrazone photochrome ; photoisomerization ; photopatterning Vědní obor RIV CC - Organická chemie Obor OECD Condensed matter physics (including formerly solid state physics, supercond.) CEP GC20-22615J GA ČR - Grantová agentura ČR Způsob publikování Omezený přístup Institucionální podpora FZU-D - RVO:68378271 UT WOS 000955344900001 EID SCOPUS 85150612052 DOI 10.1002/cphc.202300011 Anotace In this work we synthesized and studied a comb-shaped hydrazone-containing copolyacrylate exhibited cholesteric liquid crystalline properties with the pitch length of the helix being tuned under irradiation with light. In the cholesteric phase selective light reflection in near IR spectral range was measured and large blue shift of reflection peak from 1650 nm to 500 nm was found under blue light irradiation. This shift is related to Z-E isomerization of photochromic hydrazone-containing groups and photochemically reversible. Improved and faster photooptical response was found after doping of copolymer with 10wt% of low-molar-mass liquid crystal. It is noteworthy that both isomers of the hydrazone photochromic group are thermally stable that enable to achieve pure photoinduced switch without any dark relaxation at any temperatures. Large photoinduced shift of the selective light reflection together with thermal bistability make such systems promising for the application in photonics. Pracoviště Fyzikální ústav Kontakt Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Rok sběru 2024 Elektronická adresa https://doi.org/10.1002/cphc.202300011
Počet záznamů: 1