Definitions for lyotropic
ly·otrop·ic

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1. lyotropicadjective

   describing a liquid crystal that exhibits phase transitions as a function of concentration

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1. lyotropic

   A liquid crystalline mesophase is called lyotropic (a portmanteau of lyo- "dissolve" and -tropic "change" ) if formed by dissolving an amphiphilic mesogen in a suitable solvent, under appropriate conditions of concentration, temperature and pressure. A mixture of soap and water is an everyday example of a lyotropic liquid crystal. Historically, the term was used to describe the common behavior of materials composed of amphiphilic molecules upon the addition of a solvent. Such molecules comprise a water-loving hydrophilic head-group (which may be ionic or non-ionic) attached to a water-hating, hydrophobic group. The micro-phase segregation of two incompatible components on a nanometer scale results in different type of solvent-induced extended anisotropic arrangement, depending on the volume balances between the hydrophilic part and hydrophobic part. In turn, they generate the long-range order of the phases, with the solvent molecules filling the space around the compounds to provide fluidity to the system.In contrast to thermotropic liquid crystals, lyotropic liquid crystals have therefore an additional degree of freedom, that is the concentration that enables them to induce a variety of different phases. As the concentration of amphiphilic molecules is increased, several different type of lyotropic liquid crystal structures occur in solution. Each of these different types has a different extent of molecular ordering within the solvent matrix, from spherical micelles to larger cylinders, aligned cylinders and even bilayered and multiwalled aggregates.

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1. Lyotropic

   A material is called lyotropic if it forms liquid crystal phases upon the addition of a solvent. Historically the term was used to describe materials composed of amphiphilic molecules. Such molecules comprise of an ionic or non-ionic hydrophilic head-group which is attracted to water, and attached to a hydrophobic group which is repelled by water. Typical hydrophobic groups are saturated or unsaturated hydrocarbon chains. Examples of amphiphilic compounds are the salts of fatty acids; phospholipids. Many simple amphiphiles are used as detergents. Lyotropic liquid crystal phases in these materials are formed by a process of self-assembly that is driven by the hydrophobic effect. Lyotropic liquid crystal phases are formed on the dissolution of amphiphilic molecules of a material in a solvent. There are several different type of lyotropic liquid crystal structures. Each of these different types has a different extent of molecular ordering within the solvent matrix. The term lyotropic has also been applied to the liquid crystalline phases that are formed by certain polymeric materials, particularly those consisting of rigid rod-like macromolecules, when they are mixed with appropriate solvents. Examples are suspensions of rod-like viruses as the Tobacco Mosaic Virus as well as man-made colloidal suspensions of non-spherical colloidal particles. Other examples include DNA and Kevlar, which dissolves in sulfuric acid to give a lyotropic phase. It is noted that in these cases the solvent acts to lower the melting point of the materials thereby enabling the liquid crystalline phases to be accessible. These liquid crystalline phases are closer in architecture to thermotropic liquid crystalline phases than to the conventional lyotropic phases. In contrast to the behaviour of amphiphilic molecules, the lyotropic behaviour of the rod-like molecules does not involve self-assembly.

How to pronounce lyotropic?

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How to say lyotropic in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of lyotropic in Chaldean Numerology is: 9

2. Pythagorean Numerology

   The numerical value of lyotropic in Pythagorean Numerology is: 7

References

1. ^ Wiktionary
   https://en.wiktionary.org/wiki/Lyotropic
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Lyotropic
3. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=lyotropic