Data from: Differential metal-binding properties of dynamic acylhydrazone polymers and their sensing applications

As one of common dynamic covalent bonds, acylhydrazone bond plays an important role in developing intelligent responsive materials. In this report, we present acylhydrazone-based dynamic polymers with multi-stimuli responsiveness, particularly metal recognition behaviours and their modulation. A series of polyacylhydrazones with different metal-binding sites were designed and prepared in a modular fashion. Titration of these receptors with a diverse set of metal ions, including Cu2+, Zn2+ and La3+, resulted in unique optical changes, and both the sensitivity and selectivity profiles can be regulated. Moreover, the metal-binding feature was facilely modulated by changing the solvent. The addition of weakly basic anions was employed to further fine-tune the responsiveness of the polymers by taking advantage of the cooperative effect with metal coordination. Finally, the sensitive detection of 6-mercaptopurine and pyrophosphate was achieved to demonstrate the application potential of these systems.酰腙键（acylhydrazone bond）作为一类常见的动态共价键，在智能响应材料的开发中具有重要应用价值。本研究报道了一类基于酰腙键的动态聚合物，其具备多刺激响应特性，尤其在金属识别行为及其调控方面表现突出。研究人员以模块化策略设计并制备了一系列带有不同金属结合位点的聚酰腙。向这类受体中滴加包括Cu²+、Zn²+、La³+在内的多种金属离子时，可观测到独特的光学信号变化，且其灵敏度与选择性均可实现调控。此外，通过改变溶剂即可便捷调控该聚合物的金属结合特性。借助金属配位的协同效应，添加弱碱性阴离子可进一步精准微调该聚合物的响应性能。本研究最终实现了对6-巯基嘌呤与焦磷酸的高灵敏检测，以此验证了该类体系的应用潜力。