title: Supercoiling as a Physical Process Providing Formation of Macroscopic Anisometric Supramolecular Structures.
abstract: Solutions of chiral and achiral trifluoroacetyl amino alcohols (TFAAA) contain anisometric structures with a diameter <1 nm and length ~7 nm. In homochiral solutions and xerogels, chiral TFAAA form strings with a diameter of ~30-100 nm and length more than ~1 μ, and achiral TFAAA condensate into isometric granule with diameter of ~1 μ. We conclude that molecular chirality determines helicity of strings within tens of nanometers or more. Stabilization of supramolecular structure of strings is presumably achieved via their supercoiling.
authors.affiliation: N. N. Semenov Institute of Chemical Physics, Russian Academy of Sciences, Moscow, Russia. ab1954@yandex.ru.
authors.forename: A A
authors.initials: AA
authors.lastname: Skoblin
authors.affiliation: N. N. Semenov Institute of Chemical Physics, Russian Academy of Sciences, Moscow, Russia.
authors.forename: S V
authors.initials: SV
authors.lastname: Stovbun
mesh_terms: D000605:Amino Alcohols / Q000737:chemistry*; D003510:Cyclohexanes / Q000737:chemistry; D005463:Fluoroacetates / Q000737:chemistry*; D005782:Gels; D006536:Heptanes / Q000737:chemistry; D008968:Molecular Conformation; D053838:Scattering, Small Angle; D012996:Solutions; D013237:Stereoisomerism; D014961:X-Ray Diffraction
chemical_list: D000605:Amino Alcohols; D003510:Cyclohexanes; D005463:Fluoroacetates; D005782:Gels; D006536:Heptanes; D012996:Solutions; C506365:Cyclohexane
keywords: chirality; helicoidal Strings; spiral strings; supercoiling; supramolecular constructions