Bright and Photostable Fluorescent Metal Nanocluster Supraparticles from Invert Emulsions
Shaochen Zhou, Bo Peng, Yanyan Duan, Kai Liu, Olli Ikkala, Robin H. A. Ras
Abstract
Fluorescent supraparticles of gold, silver and copper nanoclusters are synthesized by simply drying of invert emulsions, resulting in a dozen-fold increase in photoluminescence quantum yield (up to ≈80 %) and a significant improvement in photostability. The inhibition of the ligand twisting during the intramolecular charge transfer is found to be responsible for the enhancement, especially for the gold nanocluster supraparticles. This research provides a general, flexible, and easy method for producing highly luminescent and photostable metal nanocluster-based materials that promise practical applications in white-light-emitting diodes.
Topics & Concepts
NanoclustersFluorescenceQuantum yieldMaterials scienceNanotechnologyPhotoluminescenceMetalIntramolecular forceCopperLuminescenceLigand (biochemistry)PhotochemistryChemical engineeringChemistryOptoelectronicsMetallurgyOrganic chemistryOpticsPhysicsBiochemistryReceptorEngineeringNanocluster Synthesis and ApplicationsGold and Silver Nanoparticles Synthesis and ApplicationsAdvanced Nanomaterials in Catalysis