Hydrogels with UCST behavior and UV/temperature-induced multicolor fluorescence for synergistic coding and encryption  

具有UCST行为和UV/温度诱导多色荧光的水凝胶用于协同编码和加密

作　　者：Chuan Liu Kangan Hao Runhao Yu Rong Li Anrong Huang Chong Wu Kai Zheng Yinye Yang Xiaoling Zuo 刘川;郝康安;俞润昊;李蓉;黄安荣;吴翀;郑凯;杨吟野;左晓玲(College of Physics and Mechatronic Engineering,Guizhou Minzu University,Guiyang 550025,China;College of Materials Science and Engineering,Guizhou Minzu University,Guiyang 550025,China;National Engineering Research Center for Compounding and Modification of Polymeric Materials,Guiyang 550014,China;School of Materials and Energy Engineering,Guizhou Institute of Technology,Guiyang 550003,China;College of Pharmacy,Guizhou University of Traditional Chinese Medicine,Guiyang 550025,China)

机构地区：[1]College of Physics and Mechatronic Engineering,Guizhou Minzu University,Guiyang 550025,China [2]College of Materials Science and Engineering,Guizhou Minzu University,Guiyang 550025,China [3]National Engineering Research Center for Compounding and Modification of Polymeric Materials,Guiyang 550014,China [4]School of Materials and Energy Engineering,Guizhou Institute of Technology,Guiyang 550003,China [5]College of Pharmacy,Guizhou University of Traditional Chinese Medicine,Guiyang 550025,China

出　　处：《Science China Materials》2024年第11期3710-3718,共9页中国科学（材料科学）（英文版）

基　　金：the financial supported from the National Natural Science Foundation of China(12304482);Guizhou Provincial Basic Research Program(Natural Science)ZK[2022]Major Project 029;Fund Project of Guizhou Minzu University(4D Printing Smart Materials Technological Innovative Talents Team,GZMUZK[2023]CXTD01);the financial supported from the Guizhou Provincial Key Technology R&D Program[2020]4Y107。

摘　　要：The development of hydrogels capable of emitting multicolor fluorescence presents a promising avenue for addressing concerns related to information leakage and distortion of sensitive data.The integration of multifactorinduced tunable fluorescence with a unique upper critical solution temperature(UCST)behavior in hydrogels significantly contributes to the development of multi-dimensional and multi-level information storage materials that can dynamically display information as well as offer a high level of security and protection for information.However,the fusion of these advantageous properties into hydrogels intended for information storage and display remains a considerable challenge.In this context,we introduce a novel three-dimensional(3D)fluorescent code-producing hydrogel array fabricated via vat photopolymerization(VP)3D printing,a technique offers a sustainable and efficient approach.This array unites the desired properties,capable of sequentially revealing concealed information through two distinct steps:(i)a heat-induced phase transition,and(ii)multicolor fluorescence triggered by ultraviolet(UV)/temperature exposure under specific conditions(i.e.,certain UV irradiation duration,heating time,and wavelength).The reversible transparency and reprogrammable fluorescence emission properties of these hydrogels are expected to significantly enhance the processes of information encryption and anti-counterfeiting.This advancement could potentially revolutionize the field of information security.开发能够发射多色荧光的水凝胶为解决信息泄漏和敏感数据失真等问题提供了一条有希望的途径.将多因素诱导可调荧光与水凝胶中独特的上临界溶液温度(UCST)行为相结合,有助于开发既能动态显示信息,又能提供高水平信息安全与保护的多维和多级信息存储材料.然而,将这些优势特性融合到水凝胶中,并用于信息存储和显示仍然是一个相当大的挑战.在此背景下,我们通过光固化3D打印技术一一种可持续的和高效的材料制造方法,制备了一种新型三维荧光编码水凝胶阵列.该阵列结合了上述特性,并且需要两个不同步骤依次解密隐藏的信息,也即:ⅰ)温度诱导的相变,以及ⅱ)紫外光和温度在特定条件下(即特定的紫外光照射时长、加热时长和辐照波长)触发的多色荧光.这些水凝胶具有可逆透明性和可编程荧光发射特性,有望显著增强信息加密和防伪过程.这一进步有望为信息安全领域带来革命性变化.

关 键 词：fluorescent hydrogels multicolor fluorescence UCST effects information encryption 3D printing 

分 类 号：TQ427.26[化学工程] TP309.7[自动化与计算机技术—计算机系统结构]