Chiral self-assembly of helical particles

Faraday Discussions
Hima Bindu KolliAchille Giacometti

Abstract

The shape of the building blocks plays a crucial role in directing self-assembly towards desired architectures. Out of the many different shapes, the helix has a unique position. Helical structures are ubiquitous in nature and a helical shape is exhibited by the most important biopolymers like polynucleotides, polypeptides and polysaccharides as well as by cellular organelles like flagella. Helical particles can self-assemble into chiral superstructures, which may have a variety of applications, e.g. as photonic (meta)materials. However, a clear and definite understanding of these structures has not been entirely achieved yet. We have recently undertaken an extensive investigation on the phase behaviour of hard helical particles, using numerical simulations and classical density functional theory. Here we present a detailed study of the phase diagram of hard helices as a function of their morphology. This includes a variety of liquid-crystal phases, with different degrees of orientational and positional ordering. We show how, by tuning the helix parameters, it is possible to control the organization of the system. Starting from slender helices, whose phase behaviour is similar to that of rodlike particles, an increase in curlin...Continue Reading

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Citations

Oct 27, 2016·The Journal of Chemical Physics·Giorgio CinacchiAlessandro Tani
May 13, 2017·Soft Matter·Henricus Herman Wensink, Claudia Ferreiro-Córdova
Dec 17, 2017·The Journal of Chemical Physics·Giorgio CinacchiHima Bindu Kolli
May 18, 2016·Soft Matter·Štěpán Růžička, Henricus H Wensink
Jul 16, 2020·Physical Chemistry Chemical Physics : PCCP·Hiroaki TsujinoueNoriyoshi Arai
Mar 17, 2021·The Journal of Chemical Physics·Joyce T LopesAchille Giacometti
Dec 2, 2021·Nanoscale·Mingjiang ZhangTaotao Zhuang

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