Activation of Solid-State Emission and Photostability through Molecular Confinement: The Case of Triptycene-Fused Quinacridone Dyes
Giovanni Preda, Andrea Aricò, Chiara Botta, Davide Ravelli, Daniele Merli, Sara Mattiello, Luca Beverina, Dario Pasini
Abstract
We report the facile, metal-free convergent synthesis and the characterization of novel quinacridone dyes in which two triptycene units end-cap and sterically confine the quinacridone chromophore. A precise comparison of the confined dyes with their known homologues reveals that the reduction of π-π interactions in triptycene-fused quinacridone dyes compared to classical quinacridone results not only in an increase of solubility and processability but also in an enhancement of fluorescence quantum yield and photostability in the solid state.
Topics & Concepts
TriptyceneChemistryChromophorePhotochemistryQuantum yieldFluorescenceYield (engineering)Polymer chemistryMaterials sciencePhysicsQuantum mechanicsMetallurgyLuminescence and Fluorescent MaterialsOrganic Electronics and PhotovoltaicsOrganic Light-Emitting Diodes Research