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Preparation and optical properties of Eu(III) complexes J-aggregate formed on the surface of silver nanoparticles |
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| Authors: | Youyi Sun Hongfang Jiu Douguo Zhang Jiangang Gao Bin Guo and Qijin Zhang |
| Institution: | aStructure Research Laboratory, University of Science and Technology of China, Hefei, Anhui 230026, PR China bDepartment of Polymer Science and Engineering, University of Science and Technology of China, 96 JianZhai Road, Hefei, Anhui 230026, PR China cDepartment of Physics, University of Science and Technology of China, Hefei, Anhui 230026, PR China |
| Abstract: | Ag colloidal nanoparticles coated with Eu(TTA)3 · 2H2O complexes were prepared, and it was found that Eu(TTA)3 · 2H2O complexes J-aggregate was formed on the surface of Ag nanoparticles according to a red shift (18.2 nm) in UV–Vis spectra. However, there had similar excitation wavelength, which was attributed to existence of Ag nanoparticles. Highly luminescent properties of Ag colloidal nanoparticles were observed, and it was believed to result from low energy transfer between Eu(III) complexes and Ag and the large electromagnetic field arising from the excitation of surface plasmon polariton of Ag nanoparticles. |
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