A Reversibly Responsive Fluorochromic Hydrogel Based on Lanthanide-Mannose Complex.

ABSTRACT: Fluorochromic materials that are dynamic in response to external stimuli are of great interest for the development of advanced sensors and luminescent materials. Herein, a design based on a lanthanide-containing polymeric hydrogel possessing characteristic emission of lanthanides (Eu and Tb) and showing response to stimuli of metal ions is reported. The fluorochromic hydrogel is prepared using a lanthanide-mannose complex in gelation matrix. The lanthanide-mannose complex shows tunable fluorescent emission in response to Fe²⁺, due to the inhibition of the "antenna effect" between metal ions and ligands upon stimulation. The fluorescent hydrogel shows reversible "On/Off" fluorochromic response to Fe²⁺/ethylenediaminetetraacetic acid (EDTA). Remarkably, the fluorescent

SUBMITTER: Meng K 

PROVIDER: S-EPMC6523369 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature