.Enhancement effect of terbium complex luminescence by binding to silver nanoparticles in the solution[J].Optoelectronics Letters,2006,2(4):316-319 |
Enhancement effect of terbium complex luminescence by binding to silver nanoparticles in the solution |
WANG Yue-hui ZHOU Ji ZONG Rui-long SHI Shi-kao WANG Ting LI BO |
State Key Lab of New Oerarnics and Fine Processing,Department of Materials Science and Engineering, Tsinghua University,Beijing 100084, Peoples Republic of China |
Abstract: |
The luminescent properties of terbium complex (terbium citrate) by binding to silver nanopartilces in the solution have been
reported in this paper. The enhanced luminescence of the complex containing silver nanoparticies was observed at a limited
particle concentration region. The nanoparticle concentration dependence of the luminescent intensity was regarded as the
result of a delicate balance between an enhancing and a quenching effect of the silver nanoparticles. Furthermore, silver
nanoparticles also affected the asymmetric ratio (AS) value of terbium luminescence. We discuss the luminescent properties
of the terbium complex in terms of the local electromagnectic field, refractive index, and the ligand field around terbium
ion.
Supported by National 973-project (2002CB61306) and National Natural Science Foundation of China (50425204 and 50572043). |
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