CHEMICALLY MODIFIED CARBON ELECTRODES
CHEMICALLY MODIFIED CARBON ELECTRODES
复制标题
DOI：
10.1021/ac50002a046
复制
发表时间：
1976-01-01
影响因子：
7.4
通讯作者：
MURRAY, RW
中科院分区：
文献类型：
--
作者：
ELLIOTT, CM;MURRAY, RW
采用有机硅烷化学方法制备表面键合胺、乙二胺、吡啶和烷基氯修饰的玻碳电极和石墨电极。用X射线光电子能谱(ESCA)检测电极结合，以及官能团的化学性质，如质子化、铜(11)配位和酰胺化反应。修饰电极保持了对溶液反应物的电化学活性，并且本身在电化学上是稳定的。在其他实验中，基于与碳表面的苯醌基团的反应，二硝基苯肼被结合到碳表面。该实验室最近的一份报告(1)描述了如何通过有机硅烷化学将各种官能团共价连接到Sn2电极的表面。用X-射线光电子能谱(ESCA)检测到SnOS表面形成了电化学性质稳定的醚键。在测试中，表面结合官能团INGS(胺、乙二胺、吡啶、烷基氯)表现出正常的化学性质。从而将锡电极表面转变为具有可预测的化学性能的新电极表面。为了扩大有机硅烷化学在电材料中的应用，我们研究了有机硅烷与两种碳--玻璃炭和光谱石墨棒表面的反应。本研究的结果构成了本报告的基础。在最近的一份报告中，米勒和他的同事(2)描述了一种通过不同化学修饰的手性碳电极。我们认为，这一系列研究最终将导致一系列具有有用的分析、化学、催化和光学性能的化学修饰电极表面。广泛的和最近评论(3，4)的文献正文
Organosilane chemistry is employed to prepare chemically modified glassy carbon and graphite electrodes with surface bound amine, ethylenediamlne, pyridine, and alkyl chloride groups. Electrode binding is detected by x-ray photoelectron spectroscopy (ESCA) as are chemical properties of the functional groups such as protonation, Cu (ll) coordination, and amidization reactions. The modified electrodes retain electrochemical activity toward solution reactants and are themselves electrochemically stable. In other experiments, dlnitrophenylhydrazine is bound to carbon surfaces based on a reaction with carbon surface quinone groupings. These carbons exhibit chemically irreversible electrochemical activity attributable to the bound dinitrophenyihydrazine.A recent report (1) from this laboratory describedhow, via organosilane chemistry, a variety of functional groupings could be covalently attached to the surfaces of SnÜ2 electrodes. Formation of the SnOSisurface ether bonds, which were electrochemically stable, was detected by x-ray photoelectron spectroscopy (ESCA). The surface-bound functional group-ings (amine, ethylenediamine, pyridine, alkyl chloride) ex-hibited normal chemical properties where tested. The SnÜ2 electrode surface was thus transformed into new electrode surfaces which possess predictable chemical properties. In the interest of expanding the application of organosilane chemistry to electrodematerials, we have examined the re-actions of organosilanes with the surfaces of two types of carbon, glassy carbon and spectroscopic graphite rod. The results of this study form the basis of this report. In a recent report, Miller and co-workers (2) described a chiral carbon electrode modified via different chemistry. We see this line of research as eventually leading to a wide array of chemically modified electrode surfaces with useful analytical, chemical, catalytic, and optical properties. An extensive and recently reviewed (3, 4) body of literature