Surface modification
of p-phenylenediamine-derived
carbon dots using 4-morpholinoaniline with an electron-donating and
rigid structure followed by purification using silica gel column chromatography
increased the photoluminescence quantum yield from 28.3 to 41.8% in
chloroform. The improved photoluminescence quantum yield was observed
for the surface modification by postaddition of the surface modifier
after the formation of the π-conjugated structure of the carbon
dot core but was not observed for the carbon dots prepared from a
mixture of p-phenylenediamine and 4-morpholinoaniline.
The finding of this work gives us an idea to design carbon dots with
high photoluminescence quantum yield for application of color conversion
in white-light-emitting diodes.
Carbon quantum dots (CQDs) are environmentally friendly phosphors. However, there have been few reports on red-emitting CQDs with narrow-bandwidths, all of which were synthesized via solvothermal methods using autoclaves. Here,...
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.