Chemical Modification of Carbon Hexagonal Plane by Ligand Exchange Reaction of Ferrocene

Miyake, Mikio; Yasuda, Koji; Kashihara, Takayuki; Teranishi, Toshiharu

doi:10.1246/cl.1999.1037

Cited by 18 publications

(19 citation statements)

References 18 publications

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“…Grafting of polymers onto GO by ligand-exchange reaction with ferrocene 3.1. Ligand-exchange reaction of ferrocene with graphene structure of nanocarbons Morrison et al reported that the h 6 -benzene-h 5 -cyclopentadienyliron cation could be readily prepared by the ligand-exchange reaction of ferrocene with benzene in the presence of AlCl 3 and Al powders as the catalysts [31,32]. Furthermore, Miyake et al reported that the ligand-exchange reaction is successfully applied for the introduction of functional groups to graphene structure of various carbon materials [32].…”

Section: Identification Of Peg Grafting Onto Go By Gc-msmentioning

confidence: 99%

A Novel Grafting of Polymers onto the Surface of Graphene Oxide

Tsubokawa¹,

Yamauchi²,

Fujiki³

et al. 2017

Graphene Materials - Structure, Properties and Modifications

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A simple grafting of polymers onto graphene oxide (GO) was achieved by polymer radical trapping, ligand-exchange reaction, and surface initiated cationic and anionic graft polymerization. Grafting of poly(ethylene glycol) (PEG) onto GO was successfully achieved by trapping of PEG radicals formed by thermal decomposition of PEG macroazo initiator to give PEG-grafted GO. The grafting of copolymers containing vinyl ferrocene moieties onto GO surfaces was also successfully achieved by the ligand-exchange reaction between ferrocene moieties of these copolymers and GO. Carboxyl groups on GO have an ability to initiate the cationic polymerizations of vinyl monomers, such as N-vinylcarbazole and isobutyl vinyl ether. The corresponding vinyl polymers were grafted onto GO, during the cationic polymerization, based on the termination of growing polymer cation by counter anion (carboxylate) groups on GO. It was found that the anionic ring-opening alternating copolymerization of epoxides with cyclic acid anhydrides was successfully initiated by potassium carboxylate groups on GO, introduced by neutralization of carboxyl groups with KOH, to give the corresponding polyester-grafted GO. The dispersibility of GO in organic solvents was remarkably improved by the grafting of the above polymers onto GO. In addition, easy preparation of reduced GO-based conducting polyaniline composite organogel will be discussed.

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Section: Identification Of Peg Grafting Onto Go By Gc-msmentioning

confidence: 99%

A Novel Grafting of Polymers onto the Surface of Graphene Oxide

Tsubokawa¹,

Yamauchi²,

Fujiki³

et al. 2017

Graphene Materials - Structure, Properties and Modifications

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“…In the coexistence of AlCl 3 and Al powder, poly(Vf-co-MMA) was successfully grafted onto ND surfaces (Run 4). It is because AlCl 3 receives cyclopentadiene of ferrocene, and after the grafting of the copolymers, iron in ferrocene moiety exists in reduced form [24], because it is known that Al powder prevents ferrocene from being oxidized to ferricinium cation [25].…”

Section: Grafting Of Poly(vf-co-vinyl Monomer) Onto Ndsmentioning

confidence: 99%

“…The results indicate that the ligand-exchange reaction of ferrocene containing polymer with ND needs large excess of catalyst. In general, the ligand-exchange reaction of ferrocene with carbon black carried out in the presence of a large excess of AlCl 3 [24,25]. This may be due to deactivation of catalysts by the interaction with functional groups on ND surface.…”

Section: Grafting Of Poly(vf-co-vinyl Monomer) Onto Ndsmentioning

confidence: 99%

Suface grafting of polymers onto nanodiamond by ligand-exchange reaction of ferrocene moieties of polymers with polycondensed aromatic rings of the surface

Cha

Shirai

Fujiki

et al. 2011

Diamond and Related Materials

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“…[41][42][43][44] Miyake et al reported that ligandexchange reaction of ferrocene can be applied to the introduction of functional groups to graphene sheet of various carbon materials, such as active carbon fiber and carbon black. 45 Grafting of Poly(Vf-co-MMA) onto CNT and VGCF…”

Section: Grafting Of Polymers Onto Carbon Nanotube and Nanofiber Surfmentioning

confidence: 99%

Preparation and Properties of Polymer-grafted Carbon Nanotubes and Nanofibers

Tsubokawa

2005

Polym J

118

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ABSTRACT:Recent advances in surface grafting of polymers onto carbon nanotubes (CNT) and nanofibers, such as vapor grown carbon fiber (VGCF), are reviewed. The grafting of polymers onto these surfaces was achieved by (1) the ''grafting onto'' method, (2) ''polymer reaction'' method, (3) ''grafting from'' method, and (4) ''stepwise growth'' method by dendrimer synthesis methodology. For the grafting of polymers, surface functional groups, such as carboxyl and phenolic hydroxyl groups, previously introduced onto the surface by oxidation with nitric acid, were used as grafting sites. These functional groups were converted into various initiating groups and surface initiated graft polymerization was achieved. The graphene sheet (polycondensed aromatic rings) of CNT and VGCF were used as grafting sites by using ligand-exchange reaction with polymers containing ferrocene moieties. The radical trapping nature of CNT and VGCF surface was used for the grafting of polymers. Dispersibility in solvents for good solvents of grafted polymer was remarkably improved by the surface grafting of polymers onto CNT and VGCF surfaces. The response of electric resistance of the composite prepared from polymer-grafted CNT and VGCF to solvent vapor and temperature is discussed. [DOI 10.1295/polymj.37.637] KEY WORDS Carbon Nanotube / Vapor Grown Carbon Fiber / Graphene Sheet / Surface Grafting of Polymer / Dispersibility / Composite / Electric Property / Carbon nanotubes (CNTs) are of considerable interest for applications to fabricating new engineering materials, because they have unique chemical, physical, and structure properties. 1-4 Among many different applications, a composite of CNT with polymer has been extensively investigated.4-8 The important problem for preparation of composites with polymers is the dispersion, compatibilization, and stabilization of CNT in the polymer matrices. Especially, singlewalled CNT (SW-CNT) is a strikingly inert material and usually in the form of bundles. To solve the problem, surface modification of CNT has been widely investigated. The covalent attachment of polymers, grafting of polymers, onto CNT is very effective because grafted polymers on the surface prevent the aggregation of CNT. Therefore, modification of CNT surface by grafting of polymers has been widely investigated by many researchers.Vapor grown carbon fiber (VGCF) is a new class of carbon nanofiber different from carbon nano-tube in its method of production and lower cost. It is also different from the conventional pitch-based and poly-(acrylonitrile)-based carbon fiber in nano-sized diameter. 9 VGCF is generaly by the form of annular carbon layers arranged like a tree ring structure. The carbon rods have a high aspect ratio and nano-sized diameter ranging from 50 to 200 nm, which is between those of conventional carbon fibers (5-10 mm) and of carbon nanotubes (1-50 nm).10 Due to unique physical properties, such as excellent thermal and electrical conductivity, and good mechanical behavior, VGCF is of considerable interest. 11,12 ...

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Chemical Modification of Carbon Hexagonal Plane by Ligand Exchange Reaction of Ferrocene

Abstract: Introduction of the functional groups to the carbon hexagonal plane of the sp2-carbon, which may provide the novel properties to carbon materials, proceeds by the ligand exchange reaction of ferrocene with the sp2-carbon.

Cited by 18 publications

References 18 publications

A Novel Grafting of Polymers onto the Surface of Graphene Oxide

A Novel Grafting of Polymers onto the Surface of Graphene Oxide

Suface grafting of polymers onto nanodiamond by ligand-exchange reaction of ferrocene moieties of polymers with polycondensed aromatic rings of the surface

Preparation and Properties of Polymer-grafted Carbon Nanotubes and Nanofibers

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