2009/09/25 by Saptarshi Ray, Ray, S. C., Arindam Saha +5
Engineering · Materials Science · #Carbon Nanotubes in Composites #FOS: Physical sciences #Graphene and Nanomaterials Applications #Materials Science (cond-mat.mtrl-sci) #Other Condensed Matter (cond-mat.other)
paper · pdf · doi:10.48550/arxiv.0909.4622
openalex publication_date 2009/09/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Fluorescent carbon nanoparticle (CNP) having 2-6 nm in size with quantum yield of about ~3% were synthesized via nitric acid oxidation of carbon soot and this approach can be used for milligram scale synthesis of these water soluble particles. These CNPs are nano-crystalline with predominantly graphitic structure and shows green fluorescence under UV exposure. While nitric acid oxidation induces nitrogen and oxygen incorporation into soot particle that afforded water solubility and light emitting property; the isolation of small particles from a mixture of different size particles improved the fluorescence quantum yield. These CNP shows encouraging cell imaging application. They enter into cell without any further functionalization and fluorescence property of these particles can be used for fluorescence based cell imaging application.