Mixture of changing uniaxial micellar forms in lyotropic biaxial nematics

Henriques, E. F.; Passos, C.B.; Henriques, Vera B.; Amáral, L. Q.

doi:10.1080/02678290802015986

Cited by 23 publications

(2 citation statements)

References 53 publications

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“…This result inspired a Maier–Saupe model for a polydisperse solution of micelles of axial symmetry [ 54 ], giving a phase diagram with a biaxial phase at small average anisometries and finite dispersion in size. A further model [ 55 ] considered, with a statistical microscopic approach, a mixture of cylinder and disk micelles, with changes of uniaxial micellar form occurring either smoothly or abruptly, to mimic the possibilities of both the biaxial phase and coexistence.…”

Section: Self-assembly and Lyotropic Liquid Crystalsmentioning

confidence: 99%

Supramolecular Aggregates: Hardness Plus Softness

Amáral

2021

Molecules

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The properties of supramolecular aggregates cross several disciplines, embracing the sciences of nature and joining theory, experiment, and application. There are few articles centering on the problems of interdisciplinarity, and this paper gives an alternative approach, starting with scientific divulgation, bringing concepts from their origin, to facilitate the access of young scientists to the scientific content. Didactic examples are taken from the experience of the author in changing directions of research due to several circumstances of life (including maternity), starting from the view of a rigorous student of physics and evolving to several subjects in chemistry. The scientific part starts with concepts related to nuclear interactions, using the technique of neutron scattering in reactors, and evolves to research in molecular physics. Finally, it arrives at the academic context, with research in condensed matter physics, with X-ray and other techniques, starting with detergents forming nematic lyotropic liquid crystals and the phase transition sequence of isotropic to nematics to hexagonal. The scientific subjects evolved to biological and bio-inspired liquid crystals, including DNA and also specific lipids and phospholipids in biomimetic membranes. Special attention is given to the question of distribution of matter in these complex systems and the non-trivial connections between biochemistry, structures, auto-aggregation, and biology.

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Section: Self-assembly and Lyotropic Liquid Crystalsmentioning

confidence: 99%

Supramolecular Aggregates: Hardness Plus Softness

Amáral

2021

Molecules

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“…Biaxial nematic lyotropic phase has been the subject of extensive studies by several authors [1][2][3][4][5][6][7][8][9][10] from the onset of the 1980's. The uniaxial nematic phases have been shown to be prolate (calamitic -N C + ) and oblate (discotic -N D -) micellar aggregates dispersed in water [11].…”

Section: Introductionmentioning

confidence: 99%