Huang Haidong, Li Xinyang, Sun Wanyang, Zhang Hui, Wang Xiaohui, Li Yichen, Chai Liqin, Liu Guojin, Huang Yi, Zhou Lan, Shao Jianzhong
Engineering Research Centre for Eco-Dyeing and Finishing of Textiles, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China; Bestchrom (Zhejiang) Biotechnology Co., Ltd., Jiaxing, Zhejiang 314200, China.
Engineering Research Centre for Eco-Dyeing and Finishing of Textiles, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China.
J Colloid Interface Sci. 2025 Jul 15;690:137253. doi: 10.1016/j.jcis.2025.137253. Epub 2025 Mar 5.
The preparation of anti-counterfeiting textiles is usually associated with laborious processes, high cost and environmental risks. In this work, the core-shell colloidal nanospheres composed of the polystyrene (PS) core with embedded aggregation-induced emission (AIE) molecules of tetraphenylethene (TPE) and the shell of densely crosslinked PS ((PS-TPE)@CPS) were designed and synthesized via emulsion polymerization. The patterned fluorescence-responsive photonic crystals (FRPCs) were then constructed using the (PS-TPE)@CPS nanospheres as building blocks on textile substrates via screen printing. Thanks to the compatibility and affinity of TPE with PS and its own AIE property, the TPE molecules enriched in the PS core and then aggregated and embedded within (PS-TPE)@CPS colloidal nanospheres. Confined by the polymer chains, the TPE molecules formed π-π stacking and exhibited AIE effect, while maintaining a stable conjugated structure. The FRPC anti-counterfeiting patterns constructed with the (PS-TPE)@CPS nanospheres exhibited angle-dependent structural colors under visible light and sensitive responsive fluorescence characteristic under ultraviolet light, realizing the double anti-counterfeiting effect. This approach to achieve anti-counterfeiting textile is simple, cost-effective, and environmentally friendly. The obtained FRPC patterns possess excellent optical properties and anti-counterfeiting functions, meeting the requirements for the sustainable structural coloration of textiles, and also promoting the practical application of responsive photonic crystal anti-counterfeiting textiles.
防伪纺织品的制备通常与繁琐的工艺、高成本和环境风险相关。在这项工作中，通过乳液聚合设计并合成了一种核壳胶体纳米球，其由嵌入四苯乙烯（TPE）聚集诱导发光（AIE）分子的聚苯乙烯（PS）核以及密集交联的PS壳层（(PS-TPE)@CPS）组成。然后，以(PS-TPE)@CPS纳米球为构建单元，通过丝网印刷在纺织基材上构建了图案化的荧光响应光子晶体（FRPC）。由于TPE与PS的相容性和亲和力及其自身的AIE性质，TPE分子富集在PS核中，然后聚集并嵌入(PS-TPE)@CPS胶体纳米球内。受聚合物链的限制，TPE分子形成π-π堆积并表现出AIE效应，同时保持稳定的共轭结构。用(PS-TPE)@CPS纳米球构建的FRPC防伪图案在可见光下呈现角度依赖性结构颜色，在紫外光下具有灵敏的响应荧光特性，实现了双重防伪效果。这种制备防伪纺织品的方法简单、成本效益高且环境友好。所获得的FRPC图案具有优异的光学性能和防伪功能，满足纺织品可持续结构着色的要求，也推动了响应性光子晶体防伪纺织品的实际应用。
