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Ruoff, Rodney S.
Center for Multidimensional Carbon Materials (CMCM)
Research Interests
  • Next generation carbons, ultrathin sp3-bonded carbon sheets, negative curvature (‘Schwartzites’) carbons, sp3/sp2 hybrid carbon materials, model compounds for novel carbon materials, reaction mechanisms

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Rupturing C60 Molecules into Graphene-Oxide-like Quantum Dots: Structure, Photoluminescence, and Catalytic Application

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Title
Rupturing C60 Molecules into Graphene-Oxide-like Quantum Dots: Structure, Photoluminescence, and Catalytic Application
Author
Chen, GuanxiongZhuo, ZhiwenNi, Kun NiKim, Na YeonZhao, YuanChen, ZongweiXiang, BinYang, Lihua.Zhang, QunLee, ZonghoonWu, XiaojunRuoff, Rodney S.Zhu, Yanwu
Issue Date
2015-10
Publisher
WILEY-V C H VERLAG GMBH
Citation
SMALL, v.11, no.39, pp.5296 - 5304
Abstract
The large-scale synthesis of graphene-oxide-like quantum dots (GOLQDs) is reported by oxidizing C-60 molecules using a modified Hummers method with a yield of approximate to 25 wt% readily achieved. The GOLQDs are highly soluble in water and in addition to hexagons have other carbon rings in the structure. They have an average height of approximate to 1.2 nm and a diameter distribution of 0.6-2.2 nm after drying on substrates. First-principle calculations indicate that a possible rupturing route may include the insertion of oxygen atoms to CC bonds in the C-60 molecule, followed by rupture of that CC bonds. The GOLQD suspension has a strong photoluminescence (PL) with peak position dependent on excitation wavelength. The PL is related to the size and emissive traps caused by oxygen-containing groups. The GOLQDs also catalyze the oxidation of benzyl alcohol with a high selectivity.
URI
https://scholarworks.unist.ac.kr/handle/201301/17692
URL
http://onlinelibrary.wiley.com/doi/10.1002/smll.201501611/abstract
DOI
10.1002/smll.201501611
ISSN
1613-6810
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CHM_Journal Papers
MSE_Journal Papers
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