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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Comparison between lyotropic cholesteric phase behavior with partly fluorinated surfactants and their exact hydrogenated counterparts

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Author(s):
Akpinar, Erol [1] ; Yurdakul, Sinan [1] ; Figueiredo Neto, Antonio Martins [2]
Total Authors: 3
Affiliation:
[1] Abant Izzet Baysal Univ, Arts & Sci Fac, Dept Chem, TR-14030 Golkoy, Bolu - Turkey
[2] Univ Sao Paulo, Inst Fis, Rua Matao 1371, BR-05508090 Sao Paulo, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: JOURNAL OF MOLECULAR LIQUIDS; v. 259, p. 239-248, JUN 1 2018.
Web of Science Citations: 3
Abstract

In this study, we examined lyotropic intrinsic cholesteric phase properties of some amino acid-based chiral surfactants, with partly fluorinated and hydrogenated chains, to investigate the effect of the twist structure of fluorocarbon chain on the helical twisting power of chiral surfactants. We synthesized some chiral and achiral surfactants, and their fluorinated/hydrogenated counterpart surfactants, taking into account the rule that {[}1 CF2 = 1.5 CH2]. We prepared lyotropic mixtures exhibiting discotic cholesteric phases by dissolution of chiral surfactants L-alaninehydrochloride undecylester (L-AUnDE), L-serinehydrochloride undecylester (L-SUnDE) and their partly fluorinated counterparts (L-APFOE and L-SPFOE, respectively) into sodium chloride (NaCl)/water mixtures, separately. The pitch measurements were used to evaluate the helical twisting powers of each fluorinated/hydrogenated chiral surfactants. The results indicated that the twist structure of fluorocarbon chain provides higher helical twisting power with respect to the hydrocarbon chain. (C) 2018 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 11/13616-4 - Optical and structural properties of elastomers and complex fluids of biological interest
Grantee:Antonio Martins Figueiredo Neto
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 08/57685-7 - NICT of Complex Fluids (IFCx)
Grantee:Antonio Martins Figueiredo Neto
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 14/50983-3 - INCT 2014: complex fluids
Grantee:Antonio Martins Figueiredo Neto
Support Opportunities: Research Projects - Thematic Grants