Effect of the surface chemistry on the photoluminescence properties of boron doped carbon dots

摘要: Abstract Two boron-doped carbon dots (BCDs), CA BA and TB BA, were prepared from various boron containing precursors using a bottom-up approach. The BCDs’ chemistry morphology evaluated by IR, XPS TEM analyses. surface of BCDs was rich in functional groups including C B, B–O, O bonds. Their optical properties analyzed UV–vis, excitation fluorescence spectroscopy. solutions, when excited at 350 nm, emitted fluorescent light with maximum 420−430 nm (in violet range). spectra deconvoluted into three components centered respectively 250, around 320 350 nm. peak 250 nm linked to the bonds, one 320 nm - B bonds 350 nm O/C calculated quantum yields varied between 1.7 9.5 %. latter number corresponds best reported for BCDs. This study highlighted importance especially governing photoluminescence highest yield found highcontribution small contribution