Safeguarding long-lived excitons from excimer traps in H-aggregated dye-assemblies
Samaresh Samanta, Subir K. Ray, Shubham Deolka, S. Saha, K. R. Pradeep, Rohit Bhowal, Nirmalya Ghosh, Debangshu Chaudhuri
Abstract
that stabilizes the lower exciton state, and inhibits excimer formation. A PL Mueller matrix study shows an increase in the excited state polarization anisotropy, indicating a strong localization of the nascent exciton, which further safeguards it from the self-trapping process. Finally, the possibility of achieving excimer-free excitonic PL in solution self-assembly is also demonstrated.
Topics & Concepts
ExcitonExcimerPhotoluminescenceChromophoreExcited stateTrappingPeryleneMaterials scienceChemical physicsPhotochemistrySpectroscopyBiexcitonMolecular physicsChemistryFluorescenceCondensed matter physicsOptoelectronicsAtomic physicsOpticsPhysicsEcologyQuantum mechanicsBiologySpectroscopy and Quantum Chemical StudiesPhotoreceptor and optogenetics researchPhotochemistry and Electron Transfer Studies