Switchable Solid-State Emission in GFP Chromophore Analogue Cocrystals via Competing AIE and ACQ Pathways

Abstract

We present a crystal-engineering approach enabling switchable solid-state emission (green → orange → quenched) in GFP-chromophore analogue cocrystals. Coformer’s electronic and supramolecular effect shifts the photophysical pathway: intramolecular CT in Cocrystal-I (green) and Cocrystal-III (Quenched) and intermolecular CT in Cocrystal-II, yielding orange emissions, highlighting cocrystallization’s power for tunable luminophores.