Morphology-controllable fabrication of organic microcrystals by solid-phase reactions: revealing morphology-sensitive highly efficient phosphorescence and enhanced near-infrared absorption

Abstract

The vapor-solid and solid-phase anion exchange reactions provide useful strategies for the morphology-controllable fabrication of organic microcrystals. The changes in morphology induce interesting changes in the photophysical properties of organic microcrystals. Significantly, hexangular microflakes exhibit higher phosphorescence quantum yield (up to 57.5%) and enhanced near-infrared absorption.