White emission thin films based on rationally designed supramolecular coordination polymers

Abstract

Fabrication of solid white luminescent materials is a challenging topic. In this work we report that upon combining the advantages of aggregation induced emission and reversible coordination polymers, solid white luminescent films with the CIE coordinates of (0.335, 0.347) and external quantum efficiencies of up to 11.74% can be achieved via layer-by-layer assembly. In particular, the ratio of the R(red) G(green) B(blue) elements can be rationally controlled via concentration, demonstrating the advantage of reversible coordination polymers in the fabrication of functional materials. The white emission of the solid thin film displays excellent stability against temperature, pH, and explosion materials, but exhibits specific detection for Cl₂, suggesting its great potential for application as both a robust luminescent material and a chemical sensor.