金表面有机膦酸锆多层膜在不同支持电解质溶液中的稳定性(英文)  

Stability of Zirconium Alkylbisphosphonate Multilayers on Gold Surfaces in Various Supporting Electrolyte Solutions

作　　者：陈煜[1] 郭礼荣[1] 康希[1] 刘训高[1] 郑丽敏[1] 夏兴华[2] 

机构地区：[1]南京大学化学化工学院,配位化学国家重点实验室,南京210093 [2]南京大学化学化工学院,生命分析化学教育部重点实验室,南京210093

出　　处：《无机化学学报》2008年第12期2065-2070,共6页Chinese Journal of Inorganic Chemistry

基　　金：国国家自然科学基金(No.20775034, 20535010) 资助项目。

摘　　要：Zirconium 1,4-butylenediphosphonate[Zr(BDPA)] multilayers on a 3-mercaptopropylphosphonate-coated gold electrode were prepared by the conventional layer-by-layer method.The stability of the Zr(BDPA) multilayers in different supporting electrolyte solutions was studied by cyclic voltammetry (CV) and X-ray photoelectron spec-troscopy(XPS) measurements.The results show that the Zr(BDPA) multilayers are very stable in 0.2 mol·L-1 KCl,0.2 mol·L-1 KNO3 and low concentration phosphate buffer solution(PBS) with low pH values(c≤0.05 mol·L-1,pH≤ 6.8).While in high concentration 0.2 mol·L-1 PBS(pH=5.2～7.4),the Zr(BDPA) multilayers will be partially desorbed within two days,possibly due to the formation of more stable zirconium phosphate.Zirconium 1,4-butylenediphosphonate[Zr（BDPA）] muhilayers on a 3-mercaptopropylphosphonate-coated gold electrode were prepared by the conventional layer-by-layer method. The stability of the Zr（BDPA） muhilayers in different supporting electrolyte solutions was studied by cyclic vohammetry （CV） and X-ray photoelectron spectroscopy（XPS） measurements. The results show that the Zr（BDPA） muhilayers are very stable in 0.2 mol·L^-1 KCl, 0.2 mol·L^-1 KNO3 and low concentration phosphate buffer solution（PBS） with low pH values（c ≤ 0.05 mol·L^-1, pH ≤ 6.8）. While in high concentration 0.2 mol·L^-1 PBS（pH=5.2-7.4）, the Zr（BDPA） multilayers will be partially desorbed within two days, possibly due to the formation of more stable zirconium phosphate.

关 键 词：有机膦酸锆 多层膜 稳定性 磷酸盐缓冲溶液 金电极 

分 类 号：O614.123[理学—无机化学] O614.41[理学—化学]