Differential metal-binding properties of dynamic acylhydrazone polymers and their sensing applications.

ABSTRACT: 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 r

SUBMITTER: Gao S 

PROVIDER: S-EPMC5579109 | biostudies-literature | 2017 Aug

REPOSITORIES: biostudies-literature