Blue-emitting InP quantum dots participate in an efficient resonance energy transfer process in water
Pradyut Roy, Mishika Virmani, Pramod P. Pillai
Abstract
∼75%) from blue-emitting InP/ZnS QDs to rhodamine B dye (Rh B) in water. The quenching dynamics fits well with the Perrin formalism and the distance-dependent quenching (DDQ) model, which confirms an electrostatically driven multi-layer assembly of Rh B acceptor molecules around the InP/ZnS QD donor. Furthermore, the process of FRET was successfully translated into the solid state, proving their suitability for device-level studies as well. In short, our study expands the spectrum of aqueous QDs based on InP towards the blue region for future biological and light harvesting studies.
Topics & Concepts
Quantum dotPhotoluminescenceIndium phosphideFörster resonance energy transferQuantum yieldAcceptorMaterials scienceOptoelectronicsZincFluorescencePhotochemistryNanotechnologyChemistryOpticsGallium arsenidePhysicsMetallurgyCondensed matter physicsQuantum Dots Synthesis And PropertiesAdvanced biosensing and bioanalysis techniquesCarbon and Quantum Dots Applications