Abstract
A complex of terbium and a new podand-type polyaromatic carboxylic acid [3,6-bis[(4′-carboxyphenoxy)methyl]-1,2,4,5-tetramethylbenzene(H2BCM)] have been synthesized, introduced into the pores of mesoporous silica by the sol–gel method, and characterized by IR, UV-Vis, X-ray diffraction, and inductively coupled plasma atomic emission spectrometry. The Tb complex encapsulated in the pores of mesoporous silica MCM (Mobil composition of matter)-41 (MCM-41-Tb2(BCM)3) displayed characteristic luminescence emission of the pure Tb complex (Tb2(BCM)3); compared with the complex itself, the unit-mass luminescence intensity of the mesoporous silica hybrid material is enhanced four times. The luminescence lifetime of Tb3+ in the hybrid material is also longer than that in pure complex.
Acknowledgments
This study was supported by the university student's Scientific and Technological Innovative Item of Zhejiang Province and the Educational Foundation of Taizhou University (Project No. 2010PY22).