祝贺向卫东和梁晓娟老师指导研究生在nanoscale上发表学术论文-威尼斯人888

标题：multicolour nitrogen-doped carbon: tuneable photoluminescence and sandwich fluorescent glass-based light-emitting diodes

abstact：the first use of the combination of ammonium citrate (ac) and ethylenediamine tetraacetic acid (edta) as coordinating precursors for the synthesis of highly fluorescent (quantum yield=67%) multicolour nitrogen-doped carbon dots (cds) is reported. under uv light, these cds emitted outstanding luminescence in colours from dark blue to red. interestingly, a single component white-light cds point with high fluorescence efficiency was obtained by surface control. alterations of the photoluminescence (pl) emission of these full-colour cds were tentatively proposed to benefit from surface functional groups, such as c=o and c=n. an energy-level model was proposed to explain the continuously adjustable full-colour emissions. the white light may be attributed to the overlap of diverse light emissions induced by the electron transitions between the energy levels. subsequently, to avoid aggregation-induced solid-state fluorescence quenching, multicolour cd-based sandwich glasses with various colour emissions were fabricated, which are anticipated to be compatible with the all-optical light-emitting diodes (leds). the facile preparation and outstanding optical features are believed to provide an alternative synthesis route and inspire more research into applications and cd-based materials of multicolour cds

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