Induction of cholesteric mesophases in nematic liquid crystals by some chiral aryl alkyl carbinols : A quantitative investigation |
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| Authors: | Giovanni Gottarelli Bruno Samorí Cristos Stremmenos Giovanni Torre |
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| Institution: | Istituto di Chimica degli Intermedi, viale Risorgimento 4, Università. 40136 Bologna, Italy;Istituto di Chimica Fisica e Spettroscopia, Università, 40136 Bologna, Italy;Istituto di Chimica Organica, via dei Campi, Università, Modena, Italy |
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| Abstract: | A series of chiral aryl alkyl carbinols, dissolved in MBBA and other nematic solvents, induce cholesteric structures. The handedness of the induced mesophases and the twisting power of the dopant alcohols are studied by means of CD and Grandjean-Cano microscopic techniques. The investigation points out the possibility of obtaining information on the stereochemistry of the dopant by studying the characteristics of the induced helices.Two different types of H- bonds between alcohols and MBBA are discussed in connection with a possible model of induction. |
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