【摘要】 本文合成胆酸和柠檬酸根共同修饰的银纳米粒子（CA+C-Ag NPs）,通过银纳米粒表面的配体胆酸与H₂PO₄^-阴离子之间的络合作用,诱导CA+C-Ag NPs团聚,溶液由黄色变为酒红色,因而该银纳米探针可以选择性识别H₂PO₄^-。该银纳米粒探针检测H₂PO₄^-的线性范围为2×10^-61×10^-5mol·L^-1,比色检测限为7×10^-7mol·L^-1,具有较高的灵敏度。更多还原

【Abstract】 It is a challenging task to develop a simple method to detect the biologically important anion H₂PO₄^-.Herein,a highly sensitive H₂PO₄^-colorimetric sensor was designed and based on cholalic acid and citrate bifunctionalized silver nanoparticles（CA+C-Ag NPs）.CA+C-Ag NPs exhibited a distinct colorimetric response to the H₂PO₄^-with the color change from yellow to wine red,due to the complexation of H₂PO₄^-with cholalic acid inducing aggregation of Ag NPs.Moreover,the assay showed a linear response range of 2×10^-61×10^-5mol·L^-1for H₂PO₄^-with colorimetric detection limit of 7×10^-7mol·L^-1更多还原