Abstract

QUANTUM DOTS IN PHARMACEUTICAL SCIENCES: BEYOND IMAGING TOWARD ADVANCED DRUG DELIVERY AND PRECISION THERAPEUTICS

*Mr. Pratik Dilip Kachare, Mr. Rohan D. Kachare, Ms. Aakanksha Mane, Ms. Neha Mahanawar, Mrs. Anuradha Salunkhe

Abstract

Quantum dots (QDs) are nanoscale semiconductor materials that possess unique size-dependent optical and electronic properties arising from the quantum confinement effect. Initially developed as fluorescent probes for bioimaging, quantum dots have rapidly evolved into multifunctional nanoplatforms with diverse applications in pharmaceutical sciences. Their use in targeted drug delivery, controlled drug release, biosensing, theranostics, gene delivery, vaccine development, antimicrobial therapy, tissue engineering, and precision medicine has been made possible by their remarkable photostability, tunable emission spectra, high surface-area-tovolume ratio, and ease of surface functionalization. Recent advances in carbon- and graphene-based quantum dots have further addressed concerns associated with the toxicity of conventional heavy metal-containing quantum dots, thereby improving their biocompatibility and expanding their biomedical potential. This review provides a comprehensive overview of the fundamental principles, classification, synthesis methods, and characterization techniques of quantum dots, followed by an in-depth discussion of their emerging pharmaceutical applications beyond conventional imaging. Particular emphasis is placed on recent developments in multifunctional drug delivery systems, stimuli-responsive nanocarriers, cancer therapeutics, biosensors, and personalized medicine. Furthermore, the review critically examines the challenges associated with toxicity, large-scale manufacturing, regulatory approval, and clinical translation. Emerging trends, including green synthesis, artificial intelligence-assisted quantum dot design, and multifunctional nanomedicine, are also highlighted as promising directions for future research. Overall, quantum dots represent a rapidly advancing class of nanomaterials with the potential to transform modern pharmaceutical research and therapeutic strategies, although continued efforts to improve their safety, scalability, and regulatory acceptance remain essential for successful clinical implementation.

Keywords: Quantum dots; Nanomedicine; Targeted drug delivery; Theranostics; Precision medicine; Carbon quantum dots; Biosensors; Drug delivery systems.