Van Nguyen CChiang W.-HWu K.C.-W.KEVIN CHIA-WEN WU2021-09-022021-09-02201900092673https://www.scopus.com/inward/record.uri?eid=2-s2.0-85072391260&doi=10.1246%2fbcsj.20190099&partnerID=40&md5=51060aeb80ceca92117febefa2ee9c9dhttps://scholars.lib.ntu.edu.tw/handle/123456789/581549Photoluminescent 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.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; Quenchingjournal article10.1246/bcsj.20190099