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室温离子液体作为一种软模板用来组装介孔材料,这种材料是由表面覆盖有半胱氨酸的自组装巨型金纳米粒子构成的.首先,由于静电作用或者配体末端的羧基和氨基基团之间的缩合反应,覆盖有半胱氨酸的金纳米粒子能够自组装形成纳米线和亚微米球形粒子.其次,球形自组装粒子在和疏水性室温离子液体1-辛基-3-甲基咪唑鎓六氟磷酸盐相互研磨时能形成一种准固态凝胶.最后,将复合凝胶涂在玻碳电极上,然后在PH=7.4的磷酸缓冲溶液中用循环伏安法进行极化,由于富余的室温离子液体分散在溶液中,形成了一种介孔组装结构.该材料具有良好的导电性和生物大分子亲和性.由于比表面积大和介孔内部的“薄层”效应,细胞色素c的氧化还原反应显著增强.实验结果表明,这种介孔材料在生物传感器和生物燃料电池等电化学器件方面具有潜在的应用前景.
Room temperature ionic liquids are used as a soft template for the assembly of mesoporous materials composed of self-assembled giant gold nanoparticles coated with cysteine.Firstly, due to electrostatic interactions or the carboxyl and amino groups Groups, the gold nanoparticles covered with cysteine can self-assemble to form nanowires and sub-micron spherical particles.Secondly, the spherical self-assembled particles were separated from hydrophobic ionic liquid 1-octyl-3- Methylimidazolium hexafluorophosphate each other to form a quasi-solid gel.Finally, the composite gel was coated on glassy carbon electrode, and then PH = 7.4 in phosphate buffer solution by cyclic voltammetry pole Due to the surplus room temperature ionic liquid dispersed in solution, forming a mesoporous assembly structure, the material has good conductivity and biological macromolecule affinity due to the large specific surface area and mesoporous internal "Effect of cytochrome c redox reaction was significantly enhanced.Experimental results show that the mesoporous materials have potential applications in biosensors and electrochemical devices such as biofuel cells.