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Induction of optical activity in a nematic mesophase by l-menthol. Optical properties of liquid crystal mixtures

✍ Scribed by H. Stegemeyer; K.-J. Mainusch

Publisher
Elsevier Science
Year
1972
Tongue
English
Weight
283 KB
Volume
16
Category
Article
ISSN
0009-2614

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✦ Synopsis

The heiical twistin:: powe: of I-menthol in n ncmntic solvent (RIBBA) has been measured bg mcnns of kduced optica! activity and circular dichroism. The optical rotatory dispersion curve is estremcly broadened corresponding to a widened region of total reflection. The induced t\vist sharply increases with concentration resultin_r in a maximum vniuc prior to the breakdown of liquid crystal suucturc. These results xc in escellent agrcemcnt with the predictions of the molecular theory of Goossens.

πŸ“œ SIMILAR VOLUMES

A model for the induction of a cholester
A model for the induction of a cholesteric mesophase in nematic MBBA by the addition of optically active 1-phenylethanol
✍ G. Gottarelli; B. Samorǐ; C. Stremmenos πŸ“‚ Article πŸ“… 1976 πŸ› Elsevier Science 🌐 English βš– 380 KB

Solutions of (-)Sa-phenylethanol and benzyl alcohol in MBBA have been studied by IR and CD spectroscopy. From the data, a possible mechanism is deduced by which (-)Sa-phenylethanoi and analogous derivatives induce a right handed cholesteric mesophase in MBBX.