title: Label-free fluorescence polarization detection of pyrophosphate based on 0D/1D fast transformation of CdTe nanostructures.
abstract: A novel and label-free fluorescence polarization (FP) method for the determination of pyrophosphate (PPi) is developed based on the change in FP signals during fast reversible transformation between CdTe zero-dimensional (0D) nanocrystals (NCs) and one-dimensional (1D) nanorods (NRs) induced by addition of PPi. Under optimum conditions, the FP ratio was linearly proportional to the logarithm of the concentration of PPi between 2.0 × 10(-5) and 1.0 × 10(-9) M with a detection limit of 8.0 × 10(-10) M. The developed method, with high signal selectivity and stability, was successfully applied to the detection of PPi in human urine samples.
authors.affiliation: Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Chemo-Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, PR China. zhucq@mail.ahnu.edu.cn.
authors.forename: Jinyan
authors.initials: J
authors.lastname: Du
authors.forename: Li
authors.initials: L
authors.lastname: Ye
authors.forename: Meili
authors.initials: M
authors.lastname: Ding
authors.forename: Yuting
authors.initials: Y
authors.lastname: Chen
authors.forename: Shujuan
authors.initials: S
authors.lastname: Zhuo
authors.forename: Changqing
authors.initials: C
authors.lastname: Zhu
mesh_terms: D019187:Cadmium Compounds / Q000737:chemistry*; D011756:Diphosphates / Q000032:analysis / Q000652:urine*; D005454:Fluorescence Polarization / Q000379:methods*; D006801:Humans; D057230:Limit of Detection; D053758:Nanoparticles / Q000737:chemistry*; D043942:Nanotubes / Q000737:chemistry*; D013691:Tellurium / Q000737:chemistry*
chemical_list: D019187:Cadmium Compounds; D011756:Diphosphates; C107241:diphosphoric acid; D013691:Tellurium; C028337:cadmium telluride