Platinum(II)-Coordinated Pyridine-Functionalized Single-Wall Carbon Nanotubes and Electron Transport in Their Films

被引：8
|
作者：
Jombert, Alice S. [1 ,3 ]
Bayazit, Mustafa K. [2 ]
Coleman, Karl S. [1 ]
Zeze, Dagou A. [3 ]
机构：
[1] Univ Durham, Dept Chem, Durham DH1 3LE, England
[2] UCL, Dept Chem Engn, London WC1E 7JE, England
[3] Univ Durham, Sch Engn, Durham DH1 3LE, England
来源：
CHEMNANOMAT | 2015年 / 1卷 / 05期
基金：
英国工程与自然科学研究理事会;
关键词：
MEMBRANE FUEL-CELLS; 1,3-DIPOLAR CYCLOADDITION; ELECTROCHEMICAL ACTIVITY; PLATINUM; NANOPARTICLES; CONDUCTIVITY; COMPLEXES; CHEMISTRY; GRAPHENE; YLIDES;
D O I：
10.1002/cnma.201500035
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Carbon nanotubes (CNTs) are ideal support materials for platinum in fuel cells. However, little is known about the conduction mechanism of Pt-coordinated CNTs. Herein, a coordination complex of pyridine-functionalized single-walled nanotubes (Py-SWNTs) with Pt (Pt/Py-SWNTs) was prepared via the ligand exchange reaction between cis-[Pt(dmso) Cl-2(2)] and Py-SWNTs generated by pyridine diazonium salt addition to SWNTs. The presence of Pt in modified SWNTs was confirmed by X-ray photoelectron spectroscopy (XPS). The N 1s XPS spectra provided evidence of Pt coordination to the pyridine nitrogen atom. Modified SWNTs were further characterized by thermogravimetric analysis coupled with mass spectrometry, ultraviolet-visible-near infrared spectroscopy, Raman spectroscopy, and elemental analysis. The electron conduction mechanism of Pt/Py-SWNT films was best described by a modified quantum tunneling model, identified from a combined analysis of the voltage and temperature dependence of the current.
引用
收藏
页码：353 / 358
页数：6
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