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pH dependence of the chirality of nematic cellulose nanocrystals.
Scientific Reports ( IF 3.8 ) Pub Date : 2019-08-05 , DOI: 10.1038/s41598-019-47834-w Chenxi Li 1 , Julian Evans 1 , Nan Wang 1 , Tingbiao Guo 1 , Sailing He 2
Scientific Reports ( IF 3.8 ) Pub Date : 2019-08-05 , DOI: 10.1038/s41598-019-47834-w Chenxi Li 1 , Julian Evans 1 , Nan Wang 1 , Tingbiao Guo 1 , Sailing He 2
Affiliation
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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.
中文翻译：
pH值依赖于向列纤维素纳米晶体的手性。
通过天然纤维素的酸水解产生的纤维素纳米晶体形成众所周知的手性向列液晶相。形成手性的机制一直是激烈讨论的主题。使用硅油悬浮液中的纤维素纳米晶体小滴研究了相的pH和浓度依赖性，这可以方便，实时地对相行为和性质进行微型操作。我们证明了在低pH和高pH区域都存在向列相，这与Stroobants-Lekkerkerker-Odijk理论一致。我们的结果证实，静电相互作用在控制手性强度方面起着至关重要的作用。
更新日期：2019-08-06
中文翻译：
pH值依赖于向列纤维素纳米晶体的手性。
通过天然纤维素的酸水解产生的纤维素纳米晶体形成众所周知的手性向列液晶相。形成手性的机制一直是激烈讨论的主题。使用硅油悬浮液中的纤维素纳米晶体小滴研究了相的pH和浓度依赖性，这可以方便，实时地对相行为和性质进行微型操作。我们证明了在低pH和高pH区域都存在向列相，这与Stroobants-Lekkerkerker-Odijk理论一致。我们的结果证实，静电相互作用在控制手性强度方面起着至关重要的作用。
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