Sheng Mingfei, Zhang Liping, Jiang Shan, Yang Li, Zaaboul Farah, Fu Shaohai
Key Laboratory of Science & Technology of Eco-Textile, Jiangnan University, Ministry of Education, Wuxi, Jiangsu 214122, China.
School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China.
ACS Appl Mater Interfaces. 2021 Mar 24;13(11):13586-13595. doi: 10.1021/acsami.1c00003. Epub 2021 Mar 14.
Liquid crystal microcapsules have attracted increasing attention due to their sophisticated structures and adjustable multifunctional features. However, the synthesis of a microscale substrate with wide electromagnetic waveband modulation characteristics and good photoelectric stabilization is still limited and challenging. Herein, a new breed of microcapsules containing dye-doped liquid crystals in a yolk-shell configuration with VTES (vinyl-trim-ethyl-silane)-modified FeO@SiO is created. It exhibits an unexpected color enhancement effect, reversible electrochromic performance, and excellent magnetically controllable characteristics. Additionally, a multispectral (visible light, near-infrared light, and high-frequency electromagnetic wave) electro-responsive fabric based on the proposed microcapsules was developed to explore its application in wearable sensors. The present work opens an avenue toward the fabrication of microscale microencapsulated soft materials with a continuous and stable yolk-shell structure. Moreover, it will expand the application regimes of liquid crystal materials in smart windows and advanced textiles.
液晶微胶囊因其复杂的结构和可调节的多功能特性而受到越来越多的关注。然而，具有宽电磁波波段调制特性和良好光电稳定性的微尺度基底的合成仍然有限且具有挑战性。在此，制备了一种新型的微胶囊，其具有核壳结构，内核为掺杂染料的液晶，外壳为经乙烯基三乙氧基硅烷（VTES）改性的FeO@SiO。它表现出意想不到的颜色增强效果、可逆的电致变色性能和优异的磁控特性。此外，基于所提出的微胶囊开发了一种多光谱（可见光、近红外光和高频电磁波）电响应织物，以探索其在可穿戴传感器中的应用。目前的工作为制备具有连续稳定核壳结构的微尺度微胶囊化软材料开辟了一条途径。此外，它将扩大液晶材料在智能窗户和先进纺织品中的应用范围。
