Upconversion fluorescent nanoparticles based-sensor array for discrimination of the same variety red grape wines.

ABSTRACT: In this research, a novel fluorescent sensor array based on upconversion nanomaterials (UCNPs) for the discrimination of the same variety red grape wines from different manufacturers was developed. The sensor array was composed of six elements: one positively charged UCNPs modified with guanidine groups (UCNPs@GDN), two negatively charged UCNPs modified with sulfonic acid groups (UCNPs@SO₃H) and phosphonic acid groups (UCNPs@PO(OH)₂), respectively, and their mixture 1 (UCNPs@GDN + UCNPs@SO₃H), mixture 2 (UCNPs@GDN + UCNPs@PO(OH)₂) and mixture 3 {UCNPs@GDN + UCNPs@SO₃H + UCNPs@PO(OH)₂}. The discrimination mechanism is mainly attributed to the emission of those upconversion fluorescent nanoparticles being quenched by organic i

SUBMITTER: Wang K 

PROVIDER: S-EPMC9061164 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature