Mesoporous crystalline silver-chalcogenolate cluster-assembled material with tailored photoluminescence properties

Abstract

Crystalline cluster-assembled materials (CAMs) are emerging as types of exploratory fabrications due to their atomically precise structures and intriguing chemical/physical properties, as well as their luminescent function. However, constructing novel luminescent porous crystalline CAMs present an enduring and significant challenge owing to their instability and poor ambient-temperature photoluminescent quantum yields. In this work, we synthesized successfully, a mesoporous crystalline CAM (1 DMAC), based on silver-chalcogenolate cluster and 1,1,2,2-tetrakis(4- (pyridin-4-yl)phenyl)ethene (TPPE) ligand, with highsymmetry structure and ultralarge pores. 1 DMAC exhibited adjustable intense luminescence, originating from aggregation-induced emission (AIE) properties of the TPPE ligand. The diameter of the cubic cage in 1 DMAC was as high as 32 Å, which endowed it with satisfactory encapsulation capacity for different guest molecules. Interestingly, by adjusting functionalized guest molecules, circularly polarized luminescence, white-light-emitting, and room-temperature phosphorescence were readily realized. 1 DMAC could enrich limited kinds of mesoporous crystalline CAMs and offers the prospect of application in host-guest chemistry. More importantly, this work provides a strategy, versatile for tailoring luminescence in crystalline porous materials.