Sensitive detection of copper ions via ion-responsive fluorescence quenching of engineered porous silicon nanoparticles.

ABSTRACT: Heavy metal pollution has been a problem since the advent of modern transportation, which despite efforts to curb emissions, continues to play a critical role in environmental pollution. Copper ions (Cu²⁺), in particular, are one of the more prevalent metals that have widespread detrimental ramifications. From this perspective, a simple and inexpensive method of detecting Cu²⁺ at the micromolar level would be highly desirable. In this study, we use porous silicon nanoparticles (NPs), obtained via anodic etching of Si wafers, as a basis for undecylenic acid (UDA)- or acrylic acid (AA)-mediated hydrosilylation. The resulting alkyl-terminated porous silicon nanoparticles (APS NPs) have enhanced fluorescence stability and intensity, and importantly, exhibit [Cu²⁺

SUBMITTER: Hwang J 

PROVIDER: S-EPMC5067703 | biostudies-literature | 2016 Oct

REPOSITORIES: biostudies-literature