由聚合物表面活性剂辅助组装的液晶纳米粒子驱动器用于制造具有可调光和可变颜色的仿生智能界面,ACS Applied Nano Materials

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由聚合物表面活性剂辅助组装的液晶纳米粒子驱动器用于制造具有可调光和可变颜色的仿生智能界面
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2022-10-05 , DOI: 10.1021/acsanm.2c03505
Aiqin Gao _{1,

2} , Teng Ma ₂ , Mengmeng Li ₂ , Huanghuang Chen ₂ , Meng Ju ₂ , Aiqin Hou _{1,

2} , Kongliang Xie _{1,

2}

Affiliation

制备具有可调光、自阴影和可调颜色性能的仿生智能材料是先进材料领域的一项重大挑战。在这项工作中，设计了一种具有光湿度刺激响应的液晶纳米颗粒致动器（LCNA），它是通过表面活性剂辅助方法由功能性液晶分子2-（3'，3'-二甲基- 6-硝基螺[色烯-2,2'-二氢吲哚]-1'-基）乙基十二烷基邻苯二甲酸酯（EDP-SP）。含有 LCNA 的仿生薄膜显示出可调节的光、自阴影和响应环境光和湿度刺激的颜色变化。自组装的两亲纳米粒子极大地提高了刺激响应的敏感性。仿生纳米致动器由多个超分子相互作用触发，例如液晶分子的重排、分子间氢键的相互作用以及纳米粒子中的光异构化。它们实时显示出出色的调光和变色灵敏度和可逆性。包含自组装 LCNA 的仿生接口引起了极大的兴趣，并在 3D 打印、智能纺织品和人造仿生皮肤方面具有许多潜在应用。

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Liquid Crystal Nanoparticle Actuator by Polymer Surfactant-Assisted Assembly for Fabricating Bioinspired Smart Interface with Adjustable Light and Changeable Color

Fabrication of bioinspired intelligent materials with adjustable light, self-shading, and tunable color performances is a significant challenge in the fields of advanced materials. In this work, a liquid crystal nanoparticle actuator (LCNA) with photo-humidity stimuli responses was designed, which was supramolecular self-assembled by the surfactant-assisted method from a functional liquid crystal molecule 2-(3′,3′-dimethyl-6-nitrospiro[chromene-2,2′-indolin]-1′-yl)ethyl dodecyl phthalate (EDP-SP). Bionic films containing the LCNA showed adjustable light, self-shading, and color changes in response to environmental light and humidity stimuli. The self-assembled amphiphilic nanoparticles greatly improved the stimuli-responsive sensitivity. A bionic nanoactuator was triggered by multiple supramolecular interactions, such as the rearrangement of liquid crystal molecules, the interactions of intermolecular hydrogen bonds, and the photoisomerization in the nanoparticles. They show excellent dimming and color-changing sensitivity and reversibility in real time. Bionic interfaces containing the self-assembled LCNA attract much interest and have many potential applications in 3D printing, smart textiles, and artificial bionic skin.

更新日期：2022-10-05

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