Water- And thermal-stable silver-based photoluminescent metal-organic coordination polymer for highly selective lead ion sensing
Journal
Bulletin of the Chemical Society of Japan
Journal Volume
92
Journal Issue
9
Pages
1430-1435
Date Issued
2019
Author(s)
Abstract
Photoluminescent metal-organic coordination polymers (PLMOCPs) have recently become an attractive material for sensing applications, however, fundamental study of PLMOCP for selective metal ion sensing is still lacking. Here, we report a highly water-stable silver-based photoluminescent metal-organic coordination polymer (PLMOCP) of Ag(BPY)(IPA-NH2) with 404 nm emission as a single probe for selectively detecting Pb2+ in aqueous solutions. The as-synthesized Ag(BPY)(IPA-NH2) was characterized with a high yield, well-defined crystalline structure, extraordinary water and thermal stabilities, and unique optical properties. A high quenching constant of 2*10^4 M11 and low limit of detection (LOD) of 2.1 ¯M are determined. Systematic absorbance and PL spectroscopic studies suggest that the PL quenching caused by Pb2+ is the simultaneous dynamic quenching mechanism. ? 2019 The Chemical Society of Japan.
Subjects
Chemical detection; Metal ions; Optical properties; Organic polymers; Organometallics; Silver; Spectroscopic analysis; Crystalline structure; Fundamental studies; Lead detection; Limit of detection; Metal-organic coordination polymers; Quenching constant; Sensing applications; Spectroscopic studies; Quenching
Type
journal article