A one-dimensional Ag(I) coordination polymer as luminescent sensor for detecting Cr2O72− and exhibiting highly photodegradation capacities for methylene blue solution.

A silver(I) coordination polymer (CP), {[Ag(DCTP) 0.5 (bpy)(H 2 O)]·0.5H 2 O} n ( 1 ) based on 2,5-dichloroterephthalic acid (H 2 DCTP) and 4,4′-bipyridine (bpy) were synthesized under hydrothermal condition. CP 1 features a 1D infinite undulating ladder-like chain, which is further extended into a 3D supramolecular network through classic O–H⋯O hydrogen bond interactions. CP 1 exhibits highly selective and sensitive luminescent detection for Cr 2 O 7 2− in aqueous solution with quenching efficiency up to 2.00 × 10 4  M −1 and a low detection limit of 2.06 µM. Further, Hirshfeld surface analyses and the photocatalytic properties of CP 1 have also been investigated in detail. Remarkably, CP 1 presented a rare example of Ag(I)-based CP as luminescent probe and photocatalytic materials simultaneously. [ABSTRACT FROM AUTHOR]