Wang Y, Yan JJ, Hu S, James Young D, Li HX, Ren ZG. A Photoluminescent Ag
10 Cu
6 Cluster Stablized by a PNNP Ligand and Phenylacetylides Selectively and Reversibly Senses Ammonia in Air and Water.
Chem Asian J 2021;
16:2681-2686. [PMID:
34313023 DOI:
10.1002/asia.202100783]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Revised: 07/24/2021] [Indexed: 01/23/2023]
Abstract
A photoluminescent bimetallic cluster [Ag10 Cu6 (bdppthi)2 (C≡CPh)12 (MeOH)2 (H2 O)](ClO4 )4 (1, bdppthi=N,N'-bis(diphenylphosphanylmethyl)-tetrahydroimidazole} was synthesized from the PNNP type ligand bdppthi generated in-situ. Upon excitation at 365 nm, 1 exhibited strong phosphorescent emission at 630 nm, which was selectively quenched by NH3 in air or water. The sensing of NH3 was rapid and recoverable, with detection limits of 53 ppm (v/v) in N2 and 21 μmol/L (0.36 ppm, w/w) for NH3 ⋅ H2 O in water. Cluster 1 could potentially serve as a bifunctional chemical sensor for the efficient detection of ammonia in waste-gas and waste-water.
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