Observation of exceptional 'de Vries-like' properties in a conventional aroylhydrazone based liquid crystal. Issue 63 (17th June 2016)

• Record Type: Journal Article
• Authors: Singh, Hemant Kumar; Singh, Sachin Kumar; Nandi, Rajib; Rao, D. S. Shankar; Prasad, S. Krishna; Singh, Ranjan K.; Singh, Bachcha
• Is Part Of: RSC advances. Volume 6:Issue 63(2016)
• Page Start: 57799
• Page End: 57802
• Publication Date: 2016-06-17
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c6ra10028g
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : N -(4-(Tetradecyloxy)-2-hydroxybenzylidene)-4′((4′′(hexadecyloxy)benzyl)oxy)benzohydrazide exhibits a de Vries reduction factor comparable to, or even lower than that reported heretofore. Abstract : Smectic liquid crystals with 'de Vries-like' properties are characterized by a maximum layer contraction of ≤1% upon transition from the non-tilted SmA phase to the tilted SmC phase. A straight alkoxy chain-terminated conventional aroylhydrazone based liquid crystal N -(4-(tetradecyloxy)-2-hydroxybenzylidene)-4′((4′′(hexadecyloxy)benzyl)oxy)benzohydrazide (BSac -1416 ) undergoes the SmA–SmC phase transition with a maximum layer contraction of 0.65%. The merits of the de Vries reduction factor, i.e. R and f values for this mesogen, are comparable to, or even lower than, those reported for established perfluorinated and polysiloxane-terminated bona fide de Vries-like materials.