Lanthanide-Mediated Cyclodextrin-Based Supramolecular Assembly-Induced Emission Xerogel Films: A Transparent Multicolor Photoluminescent Material
Hong Yao, Xiao-Tong Kan, Qi Zhou, Yan-Bing Niu, You‐Ming Zhang, Tai‐Bao Wei, Qi Lin
Abstract
Supramolecular xerogel films as multicolor photoluminescent materials are ideal for applications in optical devices, such as photochromic smart windows and LEDs. Therefore, a blue-fluorescence supramolecular hydrogel has been successfully constructed from α-CD and benzimidazole derivatives (WCB) through host–guest interactions with supramolecular assembly-induced emission (SAIE) properties. The hydrogel WCB-α-CD enables the coordination with different lanthanide metal ions (Ms) to form supramolecular nanoparticles with spherical-like morphology, thus rendering the xerogel films for lanthanide luminescence. The xerogel films WCB-α-CD@Ms, with high luminous transmittance (T > 90%) and multicolor photoluminescence, exhibit a promising potential for smart optical film materials utilizing supramolecular assembly.