Enhancing the luminescence of carbon nanodots in films by tailoring the functional groups through alkylamine-functionalization and reduction

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Enhancing the luminescence efficiency and stability of solid-state phosphors with facile processability is important for various applications. Carbon-based materials might have proper optical features and durability under ambient conditions. However, carbon-based phosphors usually showed severe quenching of the photoluminescence in the absence of solvent. Alkylamine-functionalization of carbon-based phosphors can alleviate the quenching, but it also resulted in low luminous efficiency. In this study, tailoring the functional groups of carbon nanodots (CNDs) was carefully studied through alkylamine-functionalization and reduction. The reduction with NaBH4 changed the electron-withdrawing functional groups on the alkylamine-functionalized CNDs to electron-donating groups, enhancing the luminescence efficiency. The delicate modulation of alkylamine-functionalization and reduction enabled efficient and robust photoluminescence in the film without any host materials.
Publisher
ROYAL SOC CHEMISTRY
Issue Date
2019-11
Language
English
Article Type
Article
Citation

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, v.21, no.47, pp.26095 - 26101

ISSN
1463-9076
DOI
10.1039/c9cp05241k
URI
http://hdl.handle.net/10203/268826
Appears in Collection
CBE-Journal Papers(저널논문)MS-Journal Papers(저널논문)
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