.png){kind=icon}
返回
Chirality-selected phase behaviour in ionic polypeptide complexes
.png){kind=icon}
OA
AI
DOI：10.1038/ncomms7052.png)
.png){kind=icon}
.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Polyelectrolyte complexes present new opportunities for self-assembled soft matter. Factors determining whether the phase of the complex is solid or liquid remain unclear. Ionic polypeptides enable examination of the effects of stereochemistry on complex formation. Here we demonstrate that chirality determines the state of polyelectrolyte complexes, formed from mixing dilute solutions of oppositely charged polypeptides, via a combination of electrostatic and hydrogen-bonding interactions. Fluid complexes occur when at least one of the polypeptides in the mixture is racemic, which disrupts backbone hydrogen-bonding networks. Pairs of purely chiral polypeptides, of any sense, form compact, fibrillar solids with a beta-sheet structure. Analogous behaviour occurs in micelles formed from polypeptide block copolymers with polyethylene oxide, where assembly into aggregates with either solid or fluid cores, and eventually into ordered phases at high concentrations, is possible. Chirality is an exploitable tool for manipulating material properties in polyelectrolyte complexation.
Keyword:
CHARGED BLOCK-COPOLYMERS
FORCE-FIELD
COACERVATION
MICELLES
SIMULATIONS
DYNAMICS
POLYELECTROLYTES
TRANSITIONS
RECOGNITION
STABILITY
AI总结
对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
IF:
15.7
论文数:
9.3W
被引数:
91.2W
机构
引用论文
分享收藏Effect of charged segment length on physicochemical properties of core-shell type polyion complex micelles from block ionomers.png)
MACROMOLECULES
MACROMOLECULESIF5.2
PREAI
分享收藏
查看更多内容