Multifunctional chiral nematic cellulose nanocrystals/glycerol structural colored nanocomposites for intelligent responsive films, photonic inks and iridescent coatings†,Journal of Materials Chemistry C

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Multifunctional chiral nematic cellulose nanocrystals/glycerol structural colored nanocomposites for intelligent responsive films, photonic inks and iridescent coatings†
Journal of Materials Chemistry C ( IF 5.7 ) Pub Date : 2018-04-27 00:00:00 , DOI: 10.1039/c8tc01321g
Mingcong Xu _{1,

2,

3,

4} , Wei Li _{1,

2,

3,

4} , Chunhui Ma _{1,

2,

3,

4} , Haipeng Yu _{1,

2,

3,

4} , Yiqiang Wu _{4,

5,

6,

7,

8} , Yonggui Wang _{1,

2,

3,

4} , Zhijun Chen _{1,

2,

3,

4} , Jian Li _{1,

2,

3,

4} , Shouxin Liu _{1,

2,

3,

4}

Affiliation

Structural colored nanocomposites with photonic liquid crystal structures are desirable owing to their excellent optical performances, unique structural features and intelligent responsive behaviors. Herein, a series of cellulose nanocrystal (CNC)-based nanocomposite materials that mimic the cholesteric structural colored creatures in nature were prepared and their functional applications investigated. Multicolored, flexible and intelligent responsive iridescent films were constructed by mixing cellulose nanocrystals (CNCs) and glycerol (Gly) in different ratios. Consequently, redshifted structural colors were obtained from the increase in the helical pitch of the chiral nematic structures according to the microstructure analysis. In addition to improving the mechanical properties of the composite films, glycerol also promoted the crystallinity of the films to different degrees. The CNC/Gly20 films exhibited reversible reflection colors at different relative humidity because of the strong water absorption capability of glycerol. Furthermore, CNC/Gly composite suspensions were used as photonic inks to obtain photonic writing with unique fingerprint textures. Moreover, the CNC/Gly nanocomposites were also used to make iridescent coatings on different substrates. The incorporation of glycerol improved the compatibility between the interfaces. Thus, photonic nanocomposites from cellulose nanocrystals can potentially be developed as optical sensors, security markings and functional coatings.

中文翻译：

多功能手性向列型纤维素纳米晶体/甘油结构的彩色纳米复合材料，用于智能响应膜，光子墨水和虹彩涂层†

具有光子液晶结构的结构化彩色纳米复合材料是理想的，因为它们具有出色的光学性能，独特的结构特征和智能的响应行为。在此，制备了一系列模拟自然界中的胆甾型有色生物的基于纤维素纳米晶体（CNC）的纳米复合材料，并研究了它们的功能应用。通过以不同比例混合纤维素纳米晶体（CNC）和甘油（Gly）来构造彩色，柔性和智能响应式虹彩膜。因此，根据微观结构分析，从手性向列结构的螺旋间距的增加中获得红移的结构颜色。除了改善复合膜的机械性能外，甘油也不同程度地促进了薄膜的结晶度。由于甘油的强吸水能力，CNC / Gly20膜在不同的相对湿度下表现出可逆的反射色。此外，CNC / Gly复合悬浮液被用作光子墨水，以获得具有独特指纹纹理的光子书写。此外，CNC / Gly纳米复合材料还用于在不同的基材上制备虹彩涂层。甘油的掺入改善了界面之间的相容性。因此，来自纤维素纳米晶体的光子纳米复合材料可以潜在地开发为光学传感器，安全标记和功能涂层。由于甘油的强吸水能力，CNC / Gly20膜在不同的相对湿度下表现出可逆的反射色。此外，CNC / Gly复合悬浮液被用作光子墨水，以获得具有独特指纹纹理的光子书写。此外，CNC / Gly纳米复合材料还用于在不同的基材上制备虹彩涂层。甘油的掺入改善了界面之间的相容性。因此，来自纤维素纳米晶体的光子纳米复合材料可以潜在地开发为光学传感器，安全标记和功能涂层。由于甘油的强吸水能力，CNC / Gly20膜在不同的相对湿度下表现出可逆的反射色。此外，CNC / Gly复合悬浮液被用作光子墨水，以获得具有独特指纹纹理的光子书写。此外，CNC / Gly纳米复合材料还用于在不同的基材上制备虹彩涂层。甘油的掺入改善了界面之间的相容性。因此，来自纤维素纳米晶体的光子纳米复合材料可以潜在地开发为光学传感器，安全标记和功能涂层。CNC / Gly纳米复合材料还用于在不同的基材上制备虹彩涂层。甘油的掺入改善了界面之间的相容性。因此，来自纤维素纳米晶体的光子纳米复合材料可以潜在地开发为光学传感器，安全标记和功能涂层。CNC / Gly纳米复合材料还用于在不同的基材上制备虹彩涂层。甘油的掺入改善了界面之间的相容性。因此，来自纤维素纳米晶体的光子纳米复合材料可以潜在地开发为光学传感器，安全标记和功能涂层。

更新日期：2018-04-27

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