Features of Previtamin D Cis-Trans Isomerization in the Nematic LC Matrices: Orientation and Cholesteric Order Effects.
In: Molecular Crystals & Liquid Crystals, Jg. 434 (2005-05-15), Heft 1, S. 325-325
academicJournal
Zugriff:
For the first time 7-dehydrocholesterol (7-DHC, provitamin D 3 ) photoisomerization was studied in nematic LC matrices (ZLI-1695, ZhK-805) in comparison with ethanol solution using UV absorption spectroscopy. Dissolution of chiral 7-DHC molecules in the nematic LCs induces cholesteric phase, and dramatic effect of the cholesteric pitch value on the spectral kinetics has been revealed. Significant increase in trans-isomer accumulation was observed as the cholesteric pitch was reduced from 2200 to 25 mkm. Noticeable effect of the LC orientation has been observed as well. [ABSTRACT FROM AUTHOR]
Titel: |
Features of Previtamin D Cis-Trans Isomerization in the Nematic LC Matrices: Orientation and Cholesteric Order Effects.
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Autor/in / Beteiligte Person: | Gvozdovskyy, I. ; Orlova, T. ; Terenetskaya, I. |
Zeitschrift: | Molecular Crystals & Liquid Crystals, Jg. 434 (2005-05-15), Heft 1, S. 325-325 |
Veröffentlichung: | 2005 |
Medientyp: | academicJournal |
ISSN: | 1542-1406 (print) |
DOI: | 10.1080/15421400590955361 |
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