caa a22 4500 445880511 CHVBK 20180317145541.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s00604-011-0549-8 doi (NATIONALLICENCE)springer-10.1007/s00604-011-0549-8 The determination of copper ions based on sensitized chemiluminescence of silver nanoclusters [Elektronische Daten] [Xijuan Yu, Qiujin Wang] We report on the first application of novel, water-soluble and fluorescent silver nanoclusters (Ag NCs) in a chemiluminescent (CL) detection system. A method has been developed for the determination of copper(II) ion that is based on the fact that the weak CL resulting from the redox reaction between Ce(IV) ion and sulfite ion is strongly enhanced by the Ag NCs and that the main CL signals now originate from Ag NCs. UV-visible spectra, CL spectra and fluorescent (FL) spectra were acquired to investigate the enhanced CL mechanism. It is proposed that the electronic energy of the excited state intermediate SO2* that originates from the CL reaction is transferred to Ag NCs to form an electronically excited NC whose emission is observed. In addition, it is found that copper(II) is capable of inhibiting the CL of the nanoclusters system, but not if other common metal ions are present. The detection of copper(II) is achieved indirectly by measuring the CL intensity of Ag NCs. Under the optimized experimental conditions, a linear relationship does exist between the intensity of CL and the concentrations of copper(II) in the range of 0.2nM to 0.1mΜ. The detection limit is 0.12nM. The method is applied to the determination of copper(II) ion in tap water with satisfactory results. Figa We report the first application of novel, water-soluble and fluorescent silver nanoclusters in a chemiluminescent detection system. It was found that Ag NCs acted as the luminophor and energy acceptor. A method has been developed for the determination of copper(II) ion that is based on the fact that the capable of inhibiting the CL of the nanoclusters system. Springer-Verlag, 2011 Silver nanoclusters nationallicence Chemiluminescence nationallicence Ce(IV) nationallicence Copper(II) nationallicence Yu Xijuan Shandong Provincial Key Laboratory of Biochemical Analysis, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, 266042, Qingdao, People's Republic of China aut Wang Qiujin Shandong Provincial Key Laboratory of Biochemical Analysis, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, 266042, Qingdao, People's Republic of China aut Microchimica Acta Springer Vienna 173/3-4(2011-06-01), 293-298 0026-3672 173:3-4<293 2011 173 604 https://doi.org/10.1007/s00604-011-0549-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00604-011-0549-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yu Xijuan Shandong Provincial Key Laboratory of Biochemical Analysis, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, 266042, Qingdao, People's Republic of China aut NATIONALLICENCE 700 1- Wang Qiujin Shandong Provincial Key Laboratory of Biochemical Analysis, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, 266042, Qingdao, People's Republic of China aut NATIONALLICENCE 773 0- Microchimica Acta Springer Vienna 173/3-4(2011-06-01), 293-298 0026-3672 173:3-4<293 2011 173 604 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer