【作者】 杨燕； 刘伟； 饶含兵；

【Author】 Yan Yang;Wei Liu;Hanbing Rao;College of Science, Sichuan Agricultural University;

【机构】 四川农业大学理学院；

【摘要】 尿酸是嘌呤代谢的终产物,与生命活动息息相关,监测其浓度尤为重要。本文构建了基于氮掺杂碳量子点（N-CQDs）-银纳米三角板（Ag TNPs）的双信号尿酸传感器。Ag TNPs对N-CQDs的荧光有明显淬灭作用,基于H₂O₂对Ag TNPs的刻蚀效应,N-CQDs的荧光恢复,同时Ag TNPs的颜色发生变化,但尿酸可抑制H₂O₂对Ag TNPs的刻蚀,体系荧光和颜色发生相应的改变,通过测定荧光和紫外吸收的变化达到尿酸定量分析的目的。更多还原

【Abstract】 Uric acid is an end product from purine derivatives in human metabolism. Uric acid is closely related to life activities, it is particularly important to monitor its concentration. Herein, we designed a dual-signal sensor for Uric acid detection based on nitrogen-doped carbon quantum dots（N-CQDs） and Silver triangular nanoprisms（Ag TNPs）. Ag TNPs shows obvious quenching effect to the fluorescence of N-CQDs, the fluorescence of N-CQDs recovery and the color change when H₂O₂ etched Ag TNPs, in the presence of UA, etching of the Ag TNPs is suppressed, the fluorescence and color of the sensor is changed, the purpose of quantitative analysis of Uric acid is achieved by measuring the changes of fluorescence and UV absorption.更多还原