论文部分内容阅读
糖尿病可引起许多严重的并发症,例如失明,血压心脏病和肾衰竭等.因此,葡萄糖检测技术正在以惊人的速度发展.本文合成了水溶性的NaYF_4:Eu~(3+)@Ag核-壳纳米晶体,通过能量转移,Ag壳层可以有效吸收NaYF_4:Eu~(3+)的能量,导致Eu~(3+)离子荧光淬灭.在NaYF_4:Eu~(3+)@Ag核-壳纳米晶体的表面上固定葡萄糖氧化酶(GOx)后,通过加入一定量的葡萄糖,Ag纳米粒子可以分解成Ag~+,并伴随着Eu~(3+)的荧光恢复.结果表明,该葡萄糖检测方法具有非常低的检测限(0.12μmolL~(-1)).
Diabetes mellitus can cause many serious complications such as blindness, blood pressure heart disease and renal failure, etc. Therefore, glucose detection technology is developing at an alarming rate.In this paper, a water-soluble NaYF_4: Eu ~ (3 +) @ Ag core- Shell nanocrystals, the energy transfer of the Ag shell can effectively absorb the energy of NaYF_4: Eu ~ (3 +), resulting in the fluorescence quenching of Eu ~ (3 +) ions. In the case of NaYF_4: Eu ~ After the glucose oxidase (GOx) was immobilized on the surface of shell nanocrystals, Ag nanoparticles could be decomposed into Ag ~ + with the fluorescence recovery of Eu ~ (3+) by adding a certain amount of glucose.The results showed that the glucose The detection method has a very low detection limit (0.12μmolL ~ (-1)).