Effect of dicationic ionic liquids on lyotropic liquid crystals formed by a binary system composed of Triton-X 100 and water

Thieghi, Leila T.; Longo Jr, Luiz S.; Licence, Peter; Alves, Sarah

Abstract

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 10oC. Different dicationic ionic liquids were used for doping these mesophases: 1,n-bis(3-methylimidazolium-1-yl)alkane, 1,n-bis(1-methylpyrrolidinium-1-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).

Citation

Thieghi, L. T., Longo Jr, L. S., Licence, P., & Alves, S. (in press). Effect of dicationic ionic liquids on lyotropic liquid crystals formed by a binary system composed of Triton-X 100 and water. Molecular Crystals and Liquid Crystals, 657(1), https://doi.org/10.1080/15421406.2017.1403241

• Journal Article Type: Article
• Acceptance Date: Jan 18, 2018
• Online Publication Date: Jan 18, 2018
• Deposit Date: Feb 20, 2018
• Publicly Available Date: Jan 19, 2019
• Journal: Molecular Crystals and Liquid Crystals
• Print ISSN: 1542-1406
• Electronic ISSN: 1563-5287
• Publisher: Taylor and Francis
• Peer Reviewed: Peer Reviewed
• Volume: 657
• Issue: 1
• DOI: https://doi.org/10.1080/15421406.2017.1403241
• Keywords: Lyotropic liquid crystal; Dicationic ionic liquids; Binary system Triton-X; Lamellar mesophase
• Public URL: https://nottingham-repository.worktribe.com/output/906012
• Publisher URL: http://www.tandfonline.com/doi/full/10.1080/15421406.2017.1403241
• Additional Information: This is an Accepted Manuscript of an article published by Taylor & Francis in Molecular Crystals and Liquid Crystals on 18/01/2018, available online: http://www.tandfonline.com/10.1080/15421406.2017.1403241
• Contract Date: Feb 20, 2018