Anomalous behavior of the DNA liquid-crystalline dispersion particles and their phases

被引：11

作者：

Yevdokimov, Yuri M. ^{[1
]}

Skuridin, Sergey G. ^{[1
]}

Salyanov, Viktor, I ^{[1
]}

Kats, Efim, I ^{[2
]}

机构：

[1] Russian Acad Sci, Engelhardt Inst Mol Biol, Vavilova St 32, Moscow 119991, Russia

[2] Russian Acad Sci, Landau Inst Theoret Phys, Kosygina St 2, Moscow 119334, Russia

来源：

CHEMICAL PHYSICS LETTERS | 2018年 / 707卷

基金：

俄罗斯科学基金会;

关键词：

ds DNA; Liquid-crystalline dispersions of DNA; Circular dichroism spectra; Liquid-crystalline phases of DNA; Optical textures; Hexagonal and cholesteric packing of DNA; Phase transitions; REENTRANT CHOLESTERIC PHASE; CIRCULAR-DICHROISM; TRANSITION; MOLECULES; PITCH;

D O I：

10.1016/j.cplett.2018.07.028

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The dispersions were obtained as a result of phase exclusion of the DNA molecules from aqueous-salt-PEG-containing solutions. The CD spectra have shown cholesteric and hexagonal packing of the DNA in single dispersion particles at room temperature. The phase transition of the hexagonal -> the "re-entrant" cholesteric packing of DNA takes place at elevated temperature. The texture of the "re-entrant" phase does not demonstrate attributes of DNA cholesteric phase. Alternative reasons of such discrepancy are discussed in the presented Letter. (C) 2018 Published by Elsevier B.V.

引用

页码：154 / 159

页数：6

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