Fluorescence emission properties of C60 nanoparticles

Fluorescence properties of C60 nanoparticles produced by sonication in pyridine have been systematically investigated. The fluorescence emission of C60 is dependent on the particle size. A red shift of emission maximum from 424 to 468 nm originates from the average size increase caused by strong interaction among C60 molecules in nanoparticles. In addition, it is also confirmed that the emergence of broad fluorescence emission band in the 550–570 nm region is ascribed to C60 nanoparticles aggregation.

The average size of C60 nanoparticles determines the position of fluorescence emission. A red shift of emission maximum from 424 to 468 nm occurs with the increase of the average size from tens of nanometers to hundreds of nanometers, clearly demonstrating the potential application of fluorescence spectroscopy in monitoring nanoparticles and aggregation of C60 in suspension.Figure optionsDownload as PowerPoint slideHighlights
► The relationship between C60 NPS size and fluorescence emission was investigated.
► A red shift of emission maximum occurs with the increase of average size of C60 NPS.
► Aggregation of C60 NPS causes an emergence of yellow–green fluorescence emission.