Preparation of sulfonic-functionalized graphene oxide as ion-exchange material and its application into electrochemiluminescence analysis
Preparation of sulfonic-functionalized graphene oxide as ion-exchange material and its application into electrochemiluminescence analysis
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磺基功能化氧化石墨烯离子交换材料的制备及其在电化学发光分析中的应用
DOI：
10.1016/j.bios.2010.12.015
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发表时间：
2011-03-15
影响因子：
12.6
通讯作者：
Jia, Jianbo
中科院分区：
文献类型：
--
作者：
Chen, Guifen;Zhai, Shengyong;Jia, Jianbo
通过四种磺化路线，用磺酸基衍生化从鳞片石墨的化学氧化获得的氧化石墨烯（GO）以形成磺酸基官能化的GO（GO-SO 3-）：通过GO的羧基与对氨基苯磺酸的胺之间形成酰胺，（AA-GO-SO 3-），对氨基苯磺酸的芳基重氮反应GO的羧基与半胱胺的胺形成酰胺并被H_2O_2氧化（CA-GO-SO_3-）;半胱胺的烷基重氮反应并被H_2O_2氧化（CD-GO-SO_3-）。傅里叶变换红外光谱和X射线光电光谱的结果表明，-SO 3-基团连接到GO。热重分析表明，磺酸基衍生化提高了GO的热稳定性。X射线衍射结果表明，GO-SO 3-具有比GO更有序的Tr-Tr堆积结构。将GO-SO 3-和阳离子聚电解质聚二甲基二烯丙基氯化铵（PDDA）通过层层组装的方法吸附在氧化铟锡（ITO）玻璃表面，形成（GO-SO 3-/PDDA）（n）/ITO多层膜。将二氯化三-（2，2 '-联吡啶）钌（Ru（bpy）（3）（2+））引入到多层膜中后，所得Ru（bpy）（3）（2+）/（GO-SO 3- /PDDA）（n）/ITO电极可用作电化学发光传感器，具有较高的灵敏度（检测限为1 nM）和稳定性。(C)2010 Elsevier B. V.保留所有权利。
Graphene oxide (GO) obtained from chemical oxidation of flake graphite was derivatized with sulfonic groups to form sulfonic-functionalized GO (GO-SO3-) through four sulfonation routes: through amide formation between the carboxylic group of GO and amine of sulfanilic acid (AA-GO-SO3-), aryl diazonium reaction of sulfanilic acid (AD-GO-SO3-), amide formation between the carboxylic group of GO and amine of cysteamine and oxidation by H2O2 (CA-GO-SO3-), and alkyl diazonium reaction of cysteamine and oxidation by H2O2 (CD-GO-SO3-). Results of Fourier transform infrared spectroscopy and X-ray photoelectrospectrocopy showed that -SO3- groups were attached onto GO. Thermo gravimetric analysis showed that derivatization with sulfonic groups improved thermo stability of GO. X-ray diffraction results indicated that GO-SO3- had more ordered Tr-Tr stacking structure than the original GO. GO-SO3- and cationic polyelectrote, poly (diallyldimethylammoniumchloride) (PDDA) were adsorbed at indium tin oxide (ITO) glass surface through layer-by-layer assembling to form (GO-SO3-/PDDA)(n)/ITO multilayers. After tris-(2,2'-bipyridyl) ruthenium (II) dichloride (Ru(bpy)(3)(2+)) was incorporated into the multilayers, the obtained Ru(bpy)(3)(2+)/(GO-SO3- /PDDA)(n)/ITO electrodes can be used as electrochemiluminescence sensors for detection of organic amine with high sensitivity (limit of detection of 1 nM) and stability. (C) 2010 Elsevier B.V. All rights reserved.