Ratiometric fluorescence detection of phosphate in human serum with a metal-organic frameworks-based nanocomposite and its immobilized agarose hydrogels
Ratiometric fluorescence detection of phosphate in human serum with a metal-organic frameworks-based nanocomposite and its immobilized agarose hydrogels
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基于金属有机骨架的纳米复合材料及其固定化琼脂糖水凝胶对人血清中磷酸盐的比率荧光检测
DOI:
10.1016/j.apsusc.2018.08.092
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发表时间:
2018-11
影响因子:
6.7
通讯作者:
Wu Fangying
中科院分区:
文献类型:
--
作者:
Gao Nan;Huang Jian;Wang Liyuan;Feng Jiayu;Huang Pengcheng;Wu Fangying
We report a metal-organic frameworks (MOFs)-based nanocomposite by incorporating a fluorescent dye, rhodamine B (RhB), into a stable Zr-based MOF, UiO-66-NH2. Based on weakened the LMCT process resulted from the strong binding of phosphate with Zr-O node in UiO-66-NH2and the unchangable fluorescence of RhB as the reference, this nanocomposite can be employed as a novel fluorescent sensing platform for ratiometric detection of phosphate in the range from 80 to 400 µM with a detection limit of 2.0 µM. It is particularly suitable for accurate quantification of phosphate in complex samples like human serum. Furthermore, this sensing platform is well recyclable due to reversible interaction with phosphate. Finally, this nanocomposite was encapsulated into agarose hydrogels for direct detection of phosphate in human serum with the naked eye. Thanks to the robust, portable, and instrument-free characteristics, it is expected to show great potential for on-site clinical diagnosis.
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