Modulation of the exfoliated graphene work function through cycloaddition of nitrile imines

被引：16

作者：

Barrejon, Myriam ^{[1
]}

Gomez-Escalonilla, Maria J. ^{[1
]}

Fierro, Jose Luis G. ^{[2
]}

Prieto, Pilar ^{[3
]}

Carrillo, Jose R. ^{[3
]}

Rodriguez, Antonio M. ^{[3
,4
]}

Abellan, Gonzalo ^{[5
,6
,7
]}

Cruz Lopez-Escalante, Ma ^{[8
]}

Gabas, Mercedes ^{[9
]}

Lopez-Navarrete, Juan T. ^{[10
]}

Langa, Fernando ^{[1
]}

机构：

[1] Univ Castilla La Mancha, Inst Nanociencia Nanotecnol & Mat Mol INAMOL, Toledo 45071, Spain

[2] CSIC, Inst Catalisis & Petroleoquim, Plaza Murillo 2, E-28049 Madrid, Spain

[3] Univ Castilla La Mancha, Fac Ciencias & Tecnol Quim, Dept Quim Organ Inorgan & Bioquim, Campus Univ, E-13071 Ciudad Real, Spain

[4] Univ Napoli Federico II, Dipartimento Sci Chim, Via Cintia, I-80126 Naples, Italy

[5] Friedrich Alexander Univ Erlangen Nurnberg, Dept Chem & Pharm, Henkestr 42, D-91054 Erlangen, Germany

[6] Friedrich Alexander Univ Erlangen Nurnberg, Inst Adv Mat & Proc ZMP, Henkestr 42, D-91054 Erlangen, Germany

[7] Dr Mack Str 81, D-90762 Furth, Germany

[8] Univ Malaga, Lab Mat & Superficies, Dept Ingn Quim, Unidad Nanotecnol, E-29071 Malaga, Spain

[9] Univ Malaga, Lab Mat & Superficies, Dept Fis Aplicada 1, Unidad Nanotecnol, E-29071 Malaga, Spain

[10] Univ Malaga, Dept Phys Chem, Campus Teatinos S-N, E-29071 Malaga, Spain

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2016年 / 18卷 / 42期

关键词：

MOLECULAR-ORBITAL METHODS; WALL CARBON NANOTUBES; GAUSSIAN-TYPE BASIS; ELECTRON-TRANSFER; COVALENT FUNCTIONALIZATION; DENSITY FUNCTIONALS; AZOMETHINE YLIDES; CHEMISTRY; OXIDE; STABILITY;

D O I：

10.1039/c6cp05285a

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

After the feasibility of the 1,3-dipolar cycloaddition reaction between nitrile imines and exfoliated graphene by density functional theory calculations was proved, very few-layer graphene was effectively functionalized using this procedure. Hydrazones with different electronic properties were used as precursors for the 1,3-dipoles, and microwave irradiation as an energy source enabled the reaction to be performed in a few minutes. The anchoring of organic addends on the graphene surface was confirmed by Raman spectroscopy, X-ray photoelectron spectroscopy (XPS) and thermogravimetric analysis. Ultraviolet photoelectron spectroscopy (UPS) was used to measure the work function and band gap of these new hybrids. Our results demonstrate that it is possible to modulate these important electronic valence band parameters by tailoring the electron richness of the organic addends and/or the degree of functionalization.

引用

页码：29582 / 29590

页数：9

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