A Ternary Luminescent Supramolecular Assembly System for Efficient Photocatalysis and Tunable White Light Emission

Abstract

A ternary host-guest complex composed of two pillar[5]arene derivatives (WP5 and m-TPEP5) and an Eosin Y derivative guest (WESY) has been demonstrated to form supramolecular nanoparticles in aqueous solution. These nanoparticles can be used as artificial light-harvesting systems (ALHSs) and efficiently catalyze difluoromethylation reactions in water. Furthermore, the nanoparticles can act as effective energy donor, with NiR selected as the energy acceptor, resulting in Förster resonance energy transfer (FRET) fromm-TPEP5-WESY-WP5 to NiR. By accurately adjusting the ratio of donor to acceptor, white light emission can be achieved. Furthermore, the multi-component white light-emitting diode was fabricated by using the m-TPEP5-WESY-WP5-NiR nanoparticles as phosphor.

Keywords: Ternary supramolecular system, Artificial light-harvesting systems, Förster resonanceenergy transfer, Photocatalysis, White light emission