A Photoluminescent Ag10Cu6 Cluster Stablized by a PNNP Ligand and Phenylacetylides Selectively and Reversibly Senses Ammonia in Air and Water |
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| Authors: | Yuwei Wang Jia-Jun Yan Shengnan Hu Prof David James Young Prof Hong-Xi Li Prof Zhi-Gang Ren |
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| Institution: | 1. College of Chemistry Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123 China;2. College of Engineering Informationa Technology and Environment, Charles Darwin University, Northern Territory, 0909 Australia |
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| Abstract: | A photoluminescent bimetallic cluster Ag10Cu6(bdppthi)2(C≡CPh)12(MeOH)2(H2O)](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 ⋅ H2O 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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| Keywords: | photoluminescent sensor Ag and Cu cluster ammonia detection |
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