Construction of an Artificial Light-Harvesting System Based on an Aggregation-Induced Emission Type Multiperformance Supramolecular Fluorescent Gel

Abstract

Artificial light-harvesting systems (ALHSs) based on multiperformance fluorescent gels with aggregation-induced emission (AIE) effect are presented. A multiperformance gel (PVA/Bh) is prepared comprising poly(vinyl alcohol) (PVA) and a bibenzimidazole compound (Bh). It was found that Bh and PVA were cross-linked by hydrogen bonding at 90 °C to form a stable polymer gel in ethylene glycol−H 2 O solvent, achieving various properties such as light transmission, tensile strength, thermal remodeling, and so on. Subsequently, we successfully constructed two ALHSs (Bh−BODIPY 505/515 (BDP) and Bh−Sulforhodamine 101 (SR101)). In these systems, the Bh acts as the donor, while BDP and SR101 act as acceptors. The energy transfer process from Bh to BDP and SR101 is confirmed in these two different systems. Additionally, Bh can be used as a good information writing material and information encryption material. This study will provide a basis for the design and manufacture of ALHSs based on multiperformance fluorescent gels.

An anti-freeze fluorescent organogel with rapid shape-forming properties for constructing artificial light harvesting systems used in extremely cold environments

“…25,26 Therefore, some scientists have attempted to add donors and acceptors to these materials to form ALHS organogels. 27,28 George et al used long-lived phosphorescence materials as energy donors and fluorescent dyes as acceptors and embedded these in PVA. 29 Phosphor energy transfer occurred from the donor to acceptor, and achieved controllable red and yellow fluorescence.…”

A multifunctional organogel for constructing artificial light harvesting systems with excellent energy transfer efficiency

“…These cases hinted that supramolecular gel systems can also help in the development of efficient gel ALHSs. 20,21…”