NDLI: Ferrocene-functionalized carbon nanoparticles

Content Provider	Royal Society of Chemistry (RSC)
Author	Chen, Shaowei Phebus, Bruce Konopelski, Joseph P. Song, Yang Zuckerman, Nathaniel B. Kang, Xiongwu
Copyright Year	2011
Abstract	Carbon nanoparticles were synthesized from natural gas soot and functionalized with ferrocenyl moieties by using 4-ferrocenylphenyldiazonium as the reactive precursor. The incorporation of the ferrocenyl units onto the carbon nanoparticle surface was confirmed by varied spectroscopic measurements. For instance, in FTIR measurements the characteristic vibrational bands of the ferrocenyl and phenyl moieties could be clearly identified. XPS measurements showed that there were approximately 31.9 ferrocenyl units per nanoparticle. UV-vis spectroscopic measurements displayed an absorption band at ca. 465 nm which was consistent with the optical characteristics of ferrocenyl derivatives. Furthermore, with surface functionalization by the ferrocenyl moieties, the photoluminescence of the carbon nanoparticles was found to diminish in intensity and red-shift in energy with the addition of NOBF4. This was accounted for by the formation of varied electron-accepting moieties on the particle surface, such as positively charged ferrocenium, quinone-like derivatives, and nitrosation of the aromatic rings of the graphitic cores. Interestingly, in electrochemical studies the nanoparticle-bound ferrocenyl moieties were found to exhibit two pairs of voltammetric waves with a difference of their formal potentials at about 78 mV, suggesting nanoparticle-mediated intraparticle charge delocalization at mixed valence as a result of the strong core–ligand covalent bonds and the conductive sp2carbon matrix of the graphitic cores. Consistent behaviors were observed in near-infrared measurements, indicating that the particles behaved analogously to a Class I/II mixed-valence compound.
Starting Page	1984
Ending Page	1989
Page Count	6
File Format	HTM / HTML PDF
ISSN	20403364
Volume Number	3
Issue Number	5
Journal	Nanoscale
DOI	10.1039/c0nr00953a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Ferrocenium tetrafluoroborate Carbon black Nanoparticle Inner sphere electron transfer Soot Photoluminescence Phenyl group Nitrosation Carbon Redshift Composite material Nitrosonium tetrafluoroborate Absorption band Electrochemistry Covalent bond Natural gas
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology

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