Xiong Zhile, Li Yunbin, Liang Jiashuai, Xiang Shengchang, Lv Yuanchao, Zhang Zhangjing
Fujian Provincial Key Laboratory of Polymer Materials, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, China.
Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China.
ACS Appl Mater Interfaces. 2022 Aug 24;14(33):38098-38104. doi: 10.1021/acsami.2c11761. Epub 2022 Aug 11.
One-dimensional (1D) metal-organic frameworks (MOFs) have shown great potential for designing more sensitive and smart stimuli-responsive photoluminescence metal-organic frameworks (PL-MOFs). Herein, we propose a strategy for constructing the 1D MOFs with tunable stimuli-responsive luminescence regions based on coordination-guided conformational locking. Two flexible 1D MOF microcrystals with - and -coordination modes, respectively, were synthesized by controlling the spatial constraint of solvents. The two 1D frameworks possess different conformation lockings of gain ligands, which have a great influence on the rotating restrictions and corresponding excited-state behaviors, generating the remarkably distinct color-tunable ranges (cyan-blue to green and cyan-blue to yellow, respectively). On this basis, the two 1D MOF materials, benefiting from the varied stimuli-responsive ranges, have displayed great potential in fulfilling the anticounterfeiting and information encryption applications. These results provide valuable guidance for the development of smart MOF-based stimuli-responsive materials in information identification and data encryption.
一维（1D）金属有机框架（MOF）在设计更灵敏、智能的刺激响应光致发光金属有机框架（PL-MOF）方面展现出巨大潜力。在此，我们基于配位引导的构象锁定提出一种构建具有可调刺激响应发光区域的一维MOF的策略。通过控制溶剂的空间限制，分别合成了具有 - 和 - 配位模式的两种柔性一维MOF微晶。这两种一维框架对增益配体具有不同的构象锁定，这对旋转限制和相应的激发态行为有很大影响，产生了明显不同的颜色可调范围（分别为蓝绿色到绿色以及蓝绿色到黄色）。在此基础上，这两种一维MOF材料受益于不同的刺激响应范围，在防伪和信息加密应用中展现出巨大潜力。这些结果为基于智能MOF的刺激响应材料在信息识别和数据加密方面的发展提供了有价值的指导。
