pH dependence of the chirality of nematic cellulose nanocrystals

Scientific Reports
Chenxi LiSailing He

Abstract

Cellulose nanocrystals produced by acid hydrolysis of native cellulose form a well-known chiral nematic liquid crystal phase. The mechanism involved in the formation of chirality has been the subject of a vigorous discussion. The pH and concentration dependence of the phase is studied using cellulose nanocrystal droplets within a silicon oil suspension, which allows for convenient real-time microscale manipulation of phase behaviors and properties. We demonstrate the existence of nematic phases at both low and high pH regions consistent with the Stroobants - Lekkerkerker - Odijk theory. Our results confirm electrostatic interactions play a critical role in controlling the strength of the chirality.

References

Dec 6, 2008·Langmuir : the ACS Journal of Surfaces and Colloids·Asako HiraiMasaki Tsuji
Mar 6, 2010·Chemical Reviews·Youssef HabibiOrlando J Rojas
Nov 19, 2010·Nature·Kevin E ShopsowitzMark J Maclachlan
May 29, 2012·Angewandte Chemie·Kevin E ShopsowitzMark J MacLachlan
Mar 29, 2014·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Ji Hyun ParkJan P F Lagerwall
Nov 21, 2014·Chemical Communications : Chem Comm·Maik SchlesingerMark J MacLachlan
Dec 19, 2014·Angewandte Chemie·Michael GieseMark J MacLachlan
May 29, 2015·Langmuir : the ACS Journal of Surfaces and Colloids·Christina SchützLennart Bergström
May 5, 2016·Nature Communications·Pei-Xi WangMark J MacLachlan
Aug 27, 2016·Nature Communications·Yunfeng LiEugenia Kumacheva
Dec 14, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Michael S ReidEmily D Cranston

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dynamic laser

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