Surface passivation of carbon nanoparticles with p-phenylenediamine towards photoluminescent carbon dots

The versatility of the surface chemistry of carbon dots (CDs) can generate high flexibility in engineering their surface functionality for a wide and precise array of applications. In respect of this, we perform for the first time the surface passivation of carboxylated carbon nanoparticles with p -...

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Bibliographic Details
Published in:RSC advances 2016-01, Vol.6 (62), p.56944-56951
Main Authors: Craciun, A. M., Diac, A., Focsan, M., Socaci, C., Magyari, K., Maniu, D., Mihalache, I., Veca, L. M., Astilean, S., Terec, A.
Format: Article
Language:English
Subjects:
Arrays
Carbon
Flexibility
Nanoparticles
Passivation
Photoluminescence
Strategy
Surface chemistry
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Summary:The versatility of the surface chemistry of carbon dots (CDs) can generate high flexibility in engineering their surface functionality for a wide and precise array of applications. In respect of this, we perform for the first time the surface passivation of carboxylated carbon nanoparticles with p -phenylenediamine to prepare water soluble photoluminescent CDs exhibiting intriguing physicochemical properties. The new strategy used to engineer the surface functionality allows us to synthesize CDs with a stable excitation independent green photoluminescence with a quantum yield of 14% and lifetime of 11.8 ns, suitable for application in bioimaging, sensing and optoelectronics.
ISSN:2046-2069
2046-2069
DOI:10.1039/C6RA10127E