Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Covalent modification of graphene and graphite using diazonium chemistry
T2 - Tunable grafting and nanomanipulation
AU - Greenwood, J.
AU - Phan, T.H.
AU - Fujita, Y.
AU - Li, Z.
AU - Ivasenko, O.
AU - Vanderlinden, W.
AU - Van Gorp, H.
AU - Frederickx, W.
AU - Lu, G.
AU - Tahara, K.
AU - Tobe, Y.
AU - Uji-I, H.
AU - Mertens, S.F.L.
AU - De Feyter, S.
PY - 2015
Y1 - 2015
N2 - We shine light on the covalent modification of graphite and graphene substrates using diazonium chemistry under ambient conditions. We report on the nature of the chemical modification of these graphitic substrates, the relation between molecular structure and film morphology, and the impact of the covalent modification on the properties of the substrates, as revealed by local microscopy and spectroscopy techniques and electrochemistry. By careful selection of the reagents and optimizing reaction conditions, a high density of covalently grafted molecules is obtained, a result that is demonstrated in an unprecedented way by scanning tunneling microscopy (STM) under ambient conditions. With nanomanipulation, i.e., nanoshaving using STM, surface structuring and functionalization at the nanoscale is achieved. This manipulation leads to the removal of the covalently anchored molecules, regenerating pristine sp2 hybridized graphene or graphite patches, as proven by space-resolved Raman microscopy and molecular self-assembly studies. © 2015 American Chemical Society.
AB - We shine light on the covalent modification of graphite and graphene substrates using diazonium chemistry under ambient conditions. We report on the nature of the chemical modification of these graphitic substrates, the relation between molecular structure and film morphology, and the impact of the covalent modification on the properties of the substrates, as revealed by local microscopy and spectroscopy techniques and electrochemistry. By careful selection of the reagents and optimizing reaction conditions, a high density of covalently grafted molecules is obtained, a result that is demonstrated in an unprecedented way by scanning tunneling microscopy (STM) under ambient conditions. With nanomanipulation, i.e., nanoshaving using STM, surface structuring and functionalization at the nanoscale is achieved. This manipulation leads to the removal of the covalently anchored molecules, regenerating pristine sp2 hybridized graphene or graphite patches, as proven by space-resolved Raman microscopy and molecular self-assembly studies. © 2015 American Chemical Society.
KW - AFM
KW - diazonium
KW - grafting
KW - graphene
KW - Raman spectroscopy
KW - self-assembly
KW - STM
KW - Chemical modification
KW - Chemical reactions
KW - Grafting (chemical)
KW - Graphene
KW - Graphite
KW - Manipulators
KW - Micromanipulators
KW - Molecules
KW - Nanotechnology
KW - Self assembly
KW - Covalent modifications
KW - Graphene substrates
KW - Graphitic substrates
KW - Molecular self assembly
KW - Reaction conditions
KW - Scanning tunneling microscopy
U2 - 10.1021/acsnano.5b01580
DO - 10.1021/acsnano.5b01580
M3 - Journal article
VL - 9
SP - 5520
EP - 5535
JO - ACS Nano
JF - ACS Nano
SN - 1936-0851
IS - 5
ER -