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Novel luminescent lanthanide complexes covalently linked to a terpyridine-functionalized silica network

Paper ID Volume ID Publish Year Pages File Format Full-Text
28873 44099 2007 6 PDF Available
Title
Novel luminescent lanthanide complexes covalently linked to a terpyridine-functionalized silica network
Abstract

Novel luminescent organic–inorganic hybrid materials consisting of lanthanide (Eu3+, Tb3+) complexes covalently bonded to a silica-based network have been obtained by a sol–gel approach. A new monomer has been synthesized by the thiol-ene photopolymerization between γ-mercaptopropyltrimethoxysilane and 4′-allyloxy-2,2′:6′,2″-terpyridine. The monomer is afterward submitted to complexation with lanthanide ions and used as the siloxane network precursor. FT-IR, DR, SEM, luminescence spectra and decay analysis, as well as luminescence quantum yields, were used to characterize the obtained hybrid materials. Excitation at the ligand absorption wavelength (333 nm) resulted in strong emission of the lanthanide ions: Eu3+5D0–7FJ (J = 0–4) and Tb3+5D4–7FJ (J = 6, 5, 4, 3) emission lines due to efficient energy transfer from the ligands to the lanthanide ions. When the Eu3+ and Tb3+ ions were incorporated into the same hybrid material, only the simple addition spectra from the two metal centers was observed, which indicated bimetallic complex was not formed.

Keywords
Terpyridine; Lanthanides; Luminescence; Thiol-ene photopolymerization; Organic–inorganic hybrid materials
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Novel luminescent lanthanide complexes covalently linked to a terpyridine-functionalized silica network
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 191, Issue 1, 7 September 2007, Pages 74–79
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us