Jump to main content
Jump to site search

Issue 5, 2016
Previous Article Next Article

Efficient red emission from poly(vinyl butyral) films doped with a novel europium complex based on a terpyridyl ancillary ligand: synthesis, structural elucidation by Sparkle/RM1 calculation, and photophysical properties

Author affiliations

Abstract

A novel efficient antenna Eu-complex Eu(TTA)2Tpy-OCH3·2H2O, based on the terpyridyl derivative 4′-(4-methoxyphenyl)-2,2′:6′,2′′-terpyridine(Tpy-OCH3) as the ancillary ligand, has been synthesized, structurally characterized, and its photophysical properties have been examined. Upon irradiation at the ligand-centered band in the range of 200–450 nm, the new Eu-complex displays bright red luminescence, irrespective of the medium. A Sparkle/RM1 calculation was utilized for predicting the ground-state geometries of this complex. Theoretical Judd–Ofelt and photoluminescence parameters, including quantum efficiency, as predicted from this model are in good agreement with the experimental values, proving the efficiency of this theoretical approach as implemented in the LUMPAC software (http://lumpac.pro.br). The kinetic scheme for modelling energy transfer processes shows that the main donor state is the ligand triplet state and that energy transfer occurs on both the 5D1 (20.7%) and 5D0 (79.3%) levels. As an integral part of this work, the synthesis, characterization, and luminescence properties of poly(vinyl butyral) (PVB) polymer films doped with the Eu-complex are also reported. After the Eu-complex Eu(TTA)2Tpy-OCH3·2H2O was doped into the PVB matrix to form the films, the PVB polymer matrix, acting as a co-sensitizer for Eu3+ ions, enhances the luminescence lifetimes and quantum efficiencies of the complex in comparison with its precursor complex. The new luminescent Eu/PVB films therefore show considerable promise for polymer light-emitting diode and active polymer optical fiber applications. To the best of our knowledge, this is the first report which studies in detail the photophysical properties of doped europium fluorescent films based on PVB as the polymer matrix.

Graphical abstract: Efficient red emission from poly(vinyl butyral) films doped with a novel europium complex based on a terpyridyl ancillary ligand: synthesis, structural elucidation by Sparkle/RM1 calculation, and photophysical properties

Back to tab navigation

Supplementary files

Article information


Submitted
09 Dec 2015
Accepted
11 Dec 2015
First published
14 Dec 2015

Polym. Chem., 2016,7, 1147-1157
Article type
Paper
Author version available

Efficient red emission from poly(vinyl butyral) films doped with a novel europium complex based on a terpyridyl ancillary ligand: synthesis, structural elucidation by Sparkle/RM1 calculation, and photophysical properties

C. Yang, S. Liu, J. Xu, Y. Li, M. Shang, L. Lei, G. Wang, J. He, X. Wang and M. Lu, Polym. Chem., 2016, 7, 1147
DOI: 10.1039/C5PY01956G

Social activity

Search articles by author

Spotlight

Advertisements