Issue 4, 2011

Photoactive lanthanide hybrids covalently bonded to functionalized periodic mesoporous organosilica (PMO) by calix[4]arene derivative

Abstract

Novel luminescent ternary organic–inorganic mesoprous hybrid materials bpy-Ln-Calix-NH2-PMO (Ln = Eu, Tb; Calix-NH2 = 5-amino-25,26,27,28-tetrahydroxycalix[4]arene, and PMO = periodic mesoporous organosilica) have been assembled by introducing Ln3+ and 2,2′-bipyridine (bpy) into the Calix-NH2-PMO hybrid material through a covalent bond assembling method. FTIR, UV, SAXRD, TEM, N2 adsorption measurements, photoluminescent spectra, and TG plots were obtained, and the results reveal that the resulting materials have high surface area, uniformity in the mesostructure, and good crystallinity. In addition, compared with the binary mesoporous hybrid Ln-Calix-NH2-PMO, the ternary mesoporous hybrids bpy-Ln-Calix-NH2-PMO show an overall increase in luminescent intensity, luminescent lifetime and quantum efficiency, which indicates that the introduction of the second ligand 2,2′-bipyridine can sensitize the luminescence emission of the lanthanide ions. Thermogravimetric analysis on bpy-Ln-Calix-NH2-PMO demonstrated that the thermal stability of the lanthanide complex was evidently improved as it was covalently bonded to the PMO matrix.

Graphical abstract: Photoactive lanthanide hybrids covalently bonded to functionalized periodic mesoporous organosilica (PMO) by calix[4]arene derivative

Supplementary files

Article information

Article type
Paper
Submitted
04 Aug 2010
Accepted
07 Oct 2010
First published
22 Nov 2010

J. Mater. Chem., 2011,21, 1130-1138

Photoactive lanthanide hybrids covalently bonded to functionalized periodic mesoporous organosilica (PMO) by calix[4]arene derivative

Y. Li, L. Wang and B. Yan, J. Mater. Chem., 2011, 21, 1130 DOI: 10.1039/C0JM02526G

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Spotlight

Advertisements