Chemical Modification of Graphene via Hyperthermal Molecular Reaction

被引：29

作者：

Dubey, Girjesh ^{[1
]}

Urcuyo, Roberto ^{[1
]}

Abb, Sabine ^{[1
]}

Rinke, Gordon ^{[1
]}

Burghard, Marko ^{[1
]}

Rauschenbach, Stephan ^{[1
]}

Kern, Klaus ^{[1
,2
]}

机构：

[1] Max Planck Inst Solid State Res, D-70569 Stuttgart, Germany

[2] Ecole Polytech Fed Lausanne, Inst Phys Mat Condensee, CH-1015 Lausanne, Switzerland

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2014年 / 136卷 / 39期

基金：

加拿大自然科学与工程研究理事会;

关键词：

SURFACE-INDUCED DISSOCIATION; ION-BEAM DEPOSITION; MASS-SPECTROMETRY; SOFT; FRAGMENTATION; COLLISIONS; PEPTIDES; BIOMOLECULES; CHEMISTRY; CARBON;

D O I：

10.1021/ja5046499

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Chemical functionalization of graphene is achieved by hyperthermal reaction with azopyridine molecular ions. The one-step, room temperature process takes place in high vacuum (10(7) mbar) using an electrospray ion beam deposition (ES-IBD) setup. For ion surface collisions exceeding a threshold kinetic energy of 165 eV, molecular cation beams of 4,4'-azobis(pyridine) covalently attach to chemical vapor deposited (CVD) graphene. A covalent functionalization degree of 3% of the carbon atoms of graphene is reached after 35 h of ion exposure of 2 X 10(14) azopyridinium/cm(2) of which 50% bind covalently. This facile approach for the controlled modification of graphene extends the scope of candidate species that would not otherwise react via existing conventional methods.

引用

页码：13482 / 13485

页数：4

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