This Special Issue reprint investigates the cutting edge of luminescence nanotechnology, focusing on the synthesis and diverse applications of luminescent nanomaterials. The collection synthesizes 15 papers, including two reviews and thirteen research articles, that explore advancements in areas such as in vitro and in vivo imaging, fluorescence resonance energy transfer-based detection, and photodynamic activation. It also delves into applications for solid-state displays, novel materials like perovskite quantum dots, and phenomena such as aggregation-induced emissions, representing significant new developments in the field.

This collection of papers represents new developments in luminescence nanotechnology, covering a broad spectrum of research from synthesis to application. The included articles focus on key areas such as particle-based sensing technology, particle-based therapeutics, and the development of novel materials and structures. The compilation offers insights into the latest advancements for researchers and practitioners in the field of luminescence nanotechnology.