Diphenylanthracene-based Amorphous Molecular Fluorophores for Triplet–Triplet Annihilation Upconversion System

Abstract Novel diphenylanthracene-based amorphous molecular fluorophores have been designed and synthesized. They were found to exhibit fluorescence emission with fairly high quantum efficiencies both in solution, crystalline state, and amorphous state. And finally, triplet–triplet annihilation upconversion emissions have been achieved not only in toluene solutions but also as amorphous solids using present novel fluorophores as acceptors combined with platinum(II) octaethylporphyrin as a donor.