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Journal of Nanoparticle Research

Erschienen in:

01.02.2018 | Research Paper

Solvothermal tuning of photoluminescent graphene quantum dots: from preparation to photoluminescence mechanism

verfasst von: Bao-Ping Qi, Xiaoru Zhang, Bing-Bing Shang, Dongshan Xiang, Shenghui Zhang

Erschienen in: Journal of Nanoparticle Research | Ausgabe 2/2018

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Abstract

Solvothermal synthesis was employed to tune the surface states of graphene quantum dots (GQDs). Two series of GQDs with the particle sizes from 2.6 to 4.5 nm were prepared as follows: (I) GQDs with the same size but different oxygen degrees; (II) GQDs with different core sizes but the similar surface chemistry. Both the large sizes and the high surface oxidation degrees led to the redshift photoluminescence (PL) of GQDs. Electrochemiluminescence (ECL) spectra from two series of GQDs were all in accordance with their PL spectra, respectively, which provided good evidence for the conjugated structures in GQDs responsible for PL.

Vorheriger Artikel Dispersing surface-modified imogolite nanotubes in polar and non-polar solvents

Nächster Artikel Quantum mechanical investigation of optoelectronic properties of gold nanoparticle attached titanium dioxide nanorods for device applications

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Titel: Solvothermal tuning of photoluminescent graphene quantum dots: from preparation to photoluminescence mechanism
verfasst von: Bao-Ping Qi
Xiaoru Zhang
Bing-Bing Shang
Dongshan Xiang
Shenghui Zhang
Publikationsdatum: 01.02.2018
Verlag: Springer Netherlands
Erschienen in: Journal of Nanoparticle Research / Ausgabe 2/2018
Print ISSN: 1388-0764
Elektronische ISSN: 1572-896X
DOI: https://doi.org/10.1007/s11051-018-4123-8

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