Issue 11, 2012
From the journal:

Journal of Materials Chemistry

Near-infrared luminescence of periodic mesoporous organosilicas grafted with lanthanide complexes based on visible-light sensitization†

Lining Sun,*a   Wenpeng Mai,b   Song Dang,b   Yannan Qiu,a   Wei Deng,a   Liyi Shi,*a   Wei Yana  and  Hongjie Zhang*b  

* Corresponding authors

a Research Center of Nano Science and Technology, Shanghai University, Shanghai, P. R. China
E-mail: lnsun@shu.edu.cn, shiliyi@shu.edu.cn

b State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, P. R. China
E-mail: hongjie@ciac.jl.cn

Abstract

A new periodic mesoporous organosilica material (named as bpd-PMO) was synthesized through co-condensation of bis(triethoxysilyl)ethane (BTEE) and a synthesized silsesquioxane precursor 4,4′-bis[Si(OEt)3(CH2)4]-2,2′-bipyridine (bpd-Si) in the presence of cetyltrimethylammonium bromide (CTAB) surfactant as template. Subsequently, three near-infrared (NIR) luminescent PMO hybrid materials (named as Ln(dbm)3bpd-PMO, Ln = Er, Nd, Yb) covalently linked with lanthanide complexes were successfully prepared via a ligand exchange reaction. The materials were characterized by XRD, N2 adsorption–desorption isotherms, SEM, and fluorescence spectra, and the corresponding luminescent decay analyses were recorded. Of importance here is that the excitation spectra of the Ln(dbm)3bpd-PMO extend to the visible-light range. Following the visible-light excitation, the Ln(dbm)3bpd-PMO materials show the characteristic NIR-luminescence of the corresponding Ln3+ ions. The good NIR-luminescence properties of the Ln(dbm)3bpd-PMO with the visible-light excitation would extend the potential applications of the PMO matrix to the NIR optical field.

Graphical abstract: Near-infrared luminescence of periodic mesoporous organosilicas grafted with lanthanide complexes based on visible-light sensitization

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Article information

DOI
https://doi.org/10.1039/C2JM15158H
Article type
Paper
Submitted
12 Oct 2011
Accepted
06 Jan 2012
First published
03 Feb 2012

J. Mater. Chem., 2012,22, 5121-5127

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Near-infrared luminescence of periodic mesoporous organosilicas grafted with lanthanide complexes based on visible-light sensitization

L. Sun, W. Mai, S. Dang, Y. Qiu, W. Deng, L. Shi, W. Yan and H. Zhang, J. Mater. Chem., 2012, 22, 5121 DOI: 10.1039/C2JM15158H

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