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Photostability of D–π–A nonlinear optical chromophores containing a benzothiazolium acceptor
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SYSNO ASEP 0359974 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Photostability of D–π–A nonlinear optical chromophores containing a benzothiazolium acceptor Tvůrce(i) Cigáň, M. (SK)
Gáplovský, A. (SK)
Sigmundová, I. (SK)
Zahradník, P. (SK)
Dědic, R. (CZ)
Hromadová, Magdaléna (UFCH-W) RID, ORCID, SAIZdroj.dok. Journal of Physical Organic Chemistry. - : Wiley - ISSN 0894-3230
Roč. 24, č. 6 (2011), s. 450-459Poč.str. 10 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova photooxidation ; photostability ; singlet oxygen Vědní obor RIV CG - Elektrochemie CEP GA203/08/1157 GA ČR - Grantová agentura ČR CEZ AV0Z40400503 - UFCH-W (2005-2011) UT WOS 000291361200003 DOI 10.1002/poc.1782 Anotace For the practical application of second-order NLO materials, not only a high molecular quadratic hyperpolarizability β but also good thermal, chemical, and photochemical stabilities are required. Most of the state-of-the-art chromophores with high NLO response cannot be put to use because they are photochemically highly unstable. Good thermal and photochemical stabilities with preserved high hyperpolarizabilities can be achieved by replacement of an aromatic ring with easily delocalizable heteroaromatics, e.g., with benzothiazole. Furthermore, desirable modifications of the benzothiazole fragment lead to improvement in β values. Here we report results of a comprehensive investigation of the photochemical stability of seven D–π–A push–pull molecules based on a N-methylbenzothiazolium acceptor and a N,N-dimethylaminophenyl donor with a different length of conjugated bridge and different acceptor strength. Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2012
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