Effect of dicationic ionic liquids on lyotropic liquid crystals formed by a binary system composed of Triton-X 100 and water
Thieghi, Leila Thomazelli [UNIFESP]
Longo, Luiz S., Jr. [UNIFESP]
Alves, Sarah [UNIFESP]
Is part ofMolecular Crystals And Liquid Crystals
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In this work, binary mixtures of a non-ionic surfactant (Triton X-100) and water were studied with concentrations of 30% wt H2O, showing, lamellar mesophase at temperatures below 10 degrees C. Different dicationic ionic liquids were used for doping these mesophases: 1, n-bis(3-methylimidazolium-1-yl) alkane, 1, n-bis(1-methylpyrrolidinium1- yl) alkane and 1, n-bis(pyridinium-N-yl) alkane dibromide, where n = 6 and 8. Polarized Optical Microscopy and Small-Angle X-ray Scattering were used for identifying the mesophases and the influence of different dicationic ionic liquids on the lyotropic liquid crystals phase transitions. The addition of dicationic ionic liquids to the lyotropic liquid crystals samples led to changes in transition temperature and in mesophase structure itself (such as characteristic distances).
CitationMolecular Crystals And Liquid Crystals. Abingdon, v. 657, n. 1, p. 95-101, 2017.
KeywordsBinary system Triton-X
dicationic ionic liquids
lyotropic liquid crystal
SponsorshipSao Paulo Research Foundation (FAPESP)
Coordination for the Improvement of Higher Education Personnel (CAPES)
National Council for Scientific and Technological Development (CNPq)
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