Issue 6, 2011

Sol–gel preparation, microstructure and luminescence of rare earth/silica/polyacrylamide hybrids through double functionalized covalent Si–O linkage

Abstract

A new type of photoactive macromolecule hybrid materials have been synthesized with covalent bond linking organically modified Si–O and polymer chains through sol–gel technology. The photoactive center consists of a rare earth (Eu,Tb)-functional silane precursor HIPASi of which 5-hydroxyisophthalic acid (HIPA) is grafted by 3-(triethoxysilyl)-propyl isocyanate (TEPIC). An organic polymer chain (PAMSi), from the polymerization of the precursor AM–Si originated from acrylamide monomer (AM) modified by(3-chloropropyl)trimethoxysilane (CPMS), is introduced with Si–O covalent bond to HIPASi. The resulting hybrids possess a homogeneous and regular microstructure without phase separation phenomena, whose particle sizes decreased with the enhancement of organic polymer component (PAM) content. The luminescence lifetimes, quantum efficiencies and energy transfer efficiencies of the hybrid materials are improved with an increase in the molar ratio of the organic polymer unit, suggesting that the organic polymers are favorable for the luminescence for the template effect of organic chain.

Graphical abstract: Sol–gel preparation, microstructure and luminescence of rare earth/silica/polyacrylamide hybrids through double functionalized covalent Si–O linkage

Supplementary files

Article information

Article type
Paper
Submitted
22 May 2011
Accepted
28 Jul 2011
First published
12 Sep 2011

RSC Adv., 2011,1, 1064-1071

Sol–gel preparation, microstructure and luminescence of rare earth/silica/polyacrylamide hybrids through double functionalized covalent Si–O linkage

B. Yan, L. Zhao, X. Wang and Y. Zhao, RSC Adv., 2011, 1, 1064 DOI: 10.1039/C1RA00196E

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.

Social activity

Spotlight

Advertisements