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Cadmium(II) (8‐Hydroxyquinoline) Chloride Nanowires: Synthesis, Characterization and Glucose‐Sensing Application
Author(s) -
Pan Hongcheng,
Lin Hongyu,
Shen Qingming,
Zhu JunJie
Publication year - 2008
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.200800492
Subject(s) - materials science , nanowire , quenching (fluorescence) , x ray photoelectron spectroscopy , nanoparticle , luminescence , transmission electron microscopy , analytical chemistry (journal) , spectroscopy , fluorescence , 8 hydroxyquinoline , absorption spectroscopy , cadmium chloride , scanning electron microscope , nuclear chemistry , nanotechnology , cadmium , chemical engineering , inorganic chemistry , chemistry , organic chemistry , optics , optoelectronics , physics , engineering , quantum mechanics , metallurgy , composite material
Luminescent cadmium(II) (8‐hydroxyquinoline) chloride (CdqCl) complex nanowires are synthesized via a sonochemical solution route. The results of X‐ray photoelectron spectroscopy, energy dispersive X‐ray analysis, infrared spectroscopy, elemental analysis (EA), and atomic absorption spectroscopy demonstrate that the chemical composition of the product is Cd(C 9 H 6 NO)Cl. Transmission electron microscopy and scanning electron microscopy images show that the CdqCl product is wire‐like in structure, with a diameter of approximately 50 nm and an approximate length of 2–4 µm. The morphology and composition of the product can be transformed from Cdq 2 micrometer‐scaled flakes to CdqCl nanowires by increasing the ratio of CdCl 2 /q. A new fluorescent sensing strategy for detecting H 2 O 2 and glucose is developed and is based on the combination of the luminescent nanowires and the biocatalytic growth of Au nanoparticles. The quenching effects of Au nanoparticles and ${\rm AuCl}_4^ - $ on the fluorescence of CdqCl nanowires are investigated. The dominant factor for the fluorescence quenching of CdqCl nanowires is that the Stern–Volmer quenching constant of Au nanoparticles is larger than that of ${\rm AuCl}_4^ - $ .