Noncovalent wrapping of chemically modified graphene with π-conjugated disk-like molecules

被引：29

作者：

Kamada, Shigenori ^{[1
,2
]}

Nomoto, Hirotaka ^{[1
,2
]}

Fukuda, Katsutoshi ^{[1
,2
]}

Fukawa, Tadashi ^{[1
,2
]}

Shirai, Hirofusa ^{[1
,2
]}

Kimura, Mutsumi ^{[1
,2
]}

机构：

[1] Shinshu Univ, Collaborat Innovat Ctr Nanotech FIBER nanoFIC, Ueda, Nagano 3868567, Japan

[2] Shinshu Univ, Fac Text Sci & Technol, Dept Funct Polymer Sci, Ueda, Nagano 3868567, Japan

来源：

COLLOID AND POLYMER SCIENCE | 2011年 / 289卷 / 08期

关键词：

Graphene; Aryl diazonium salt; Disk-like molecules; Noncovalent wrapping; Langmuir-Blodgett assembly; Chemical modification; Interaction; Dispersion; AFM; EXFOLIATED GRAPHITE OXIDE; FUNCTIONALIZED GRAPHENE; FILMS; REDUCTION; TRANSPARENT; DISPERSIONS; NANOSHEETS; EVOLUTION; DEVICES;

D O I：

10.1007/s00396-011-2414-z

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：

A facile and scalable preparation of dispersion of isolated graphene in various organic solvents has been developed by combining between covalent and noncovalent functionalizations of the graphene surface. Covalently functionalized graphene (FRG) was prepared by the reaction of partially reduced graphene oxide with aryl diazonium salts, followed by the graphene oxide being completely reduced with hydrazine. The resulting FRG disperse readily in organic solvents such as N,N'-dimethylformamide (DMF) and N-methyl-2-pyrrolidinone and the functionalization of graphene was characterized by Fourier transform infrared spectroscopy, thermogravimetric thermogram, X-ray photoelectron spectroscopy, and Raman spectroscopy. The hydrophobic surface of FRG was noncovalently wrapped with aromatic hexakis-dodecylhexa-peri-benzocorone (HBC) by simply mixing of dispersion of FRG in DMF with toluene solution of HBC. The complexation of FRG and HBC was monitored by viewing the absorption and fluorescence spectral changes. Atomic force microscopic images confirmed that graphene was covalently and noncovalently functionalized, while keeping a two-dimensional sheet shape.

引用

页码：925 / 932

页数：8

共 55 条

[1] Soft Transfer Printing of Chemically Converted Graphene [J].