纳米金与巯基的界面自组装是提高传感性能的新策略。本方法将氨基苯硫酚溶液溶解于有机相,将其与氯金酸水溶液按照一定摩尔比混合,构置了液-液界面,基于自组装的界面反应物富集,聚金酸与氨基苯硫酚的氧化还原反应,一步法合成聚苯胺-金复合材料。研究氨基苯硫酚中反应位点的位置和浓度,确定当有机相与水相反应为摩尔比为10∶1时,可以制备得到纳米花,由直径30～50nm,长度为3～5μm的花瓣状结构组装而成。采用X射线晶体衍射、X射线能谱分析、扫描电子显微镜分析和电化学方法对其晶体结构、表面形貌和电化学性能进行分析。结果表明:2-氨基苯硫酚有利于复合材料的纳米结构有序性形成,并对葡萄糖的氧化有显著的催化作用。
The self-assembly of gold with sulfhydryl groups at Interface is a new strategy to improve sensing performance.Thiophenol solution was dissolved in organic phase,then mixed with chloro-auric acid aqueous solution at a certain molar ratio.Based on (1)enrichment of self-assembled interfacial reactants,(2)Redox reaction of chloroauric acid and thiophenol,polyaniline-gold(PANI/Au) composites was one-step prepared at liquid-liquid interface.The location and concentration of the reaction sites of aminophenol were studied.When the molar ratio of the organic phase to the water was 10∶1,the nanoflowers were assembled by nanorod with diameters of 30～50nm and length of 3～5μm.The crystal structure,surface morphology and electrochemical properties were analyzed by X-ray crystal diffraction,X-ray energy spectrum analysis,scanning electron microscopy and electrochemical methods.The results shown that 2-aminophenol was beneficial to the orderly formation of nanostructure of the composites.And it showed significant catalytic effect on the oxidation of glucose.
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基金资助
国家自然科学基金(21445004);陕西省创新能力支撑计划(2018KJXX-090);陕西省科技厅项目(2020JQ-886和2018JM3036);陕西省教育厅项目(20JK0867);陕西省教育厅重点实验室访问学者项目(14JS095);西安市科技计划项目(2019KJWL13、2016CXWL09和2016CXWL20);陕西省大学生创新创业训练计划项目(2019066);西安文理学院博士启动基金(06005017);西安文理学院创新改革试点项目[2016105GG/ZT05(4)];陕西省分析化学重点学科资助(09009001)
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