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Title: Phosphate modulated luminescence in lanthanum vanadate nanorods- Catechin, polyphenolic ligand

Abstract

Rare earth orthovanadates and phosphates offer a very high opportunity for fabrication of nanoscale devices that exploit their luminescence properties. Optimization of luminescence by way of modulation of size, shape, structure, and morphology has been an area of study for several researchers. There has been a debate as to whether doped orthophosphate or orthovanadate is better luminescent material as both are chemically similar. It has been reported earlier that catechin hydrate can play the role of a structure director and thus influence the luminescence properties of orthovanadates. In this work, a catechin modulated the synthesis of Eu-doped lanthanum orthophosphate by phosphate substitution into vanadate host lattice is reported. A mechanistic understanding of the luminescence changes in LaMO{sub 4} has been proposed. During the substitution of V with P, catechin modulates the structure between 1D nanorods and nanowires. The host crystal structure, shape, and size influence the luminescence properties in doped LaMO{sub 4}. - Graphical abstract: Schematic illustration for the formation process of LAP nanowires using catechin. Display Omitted - Highlights: • Lanthanum phosphate nanowires are prepared by catechin -natural product. • Morphology tuned from nanorods to nanowires with tune in host lattice. • Quenching of luminescence – Zeolite water andmore » Eu{sup 3+} to Eu{sup 2+} reduction. • The crystal structures was investigated by XRD, NMR, XPS and EPR.« less

Authors:
; ;
Publication Date:
OSTI Identifier:
22742024
Resource Type:
Journal Article
Journal Name:
Journal of Solid State Chemistry
Additional Journal Information:
Journal Volume: 252; Other Information: Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0022-4596
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; CRYSTAL STRUCTURE; DOPED MATERIALS; ELECTRON SPIN RESONANCE; EUROPIUM IONS; HOST; LANTHANUM PHOSPHATES; LUMINESCENCE; NANOWIRES; NUCLEAR MAGNETIC RESONANCE; RARE EARTHS; VANADATES; X-RAY DIFFRACTION; X-RAY PHOTOELECTRON SPECTROSCOPY

Citation Formats

Tamilmani, Vairapperumal, Nair, Balachandran Unni, and Sreeram, Kalarical Janardhanan, E-mail: kjsreeram@clri.res.in. Phosphate modulated luminescence in lanthanum vanadate nanorods- Catechin, polyphenolic ligand. United States: N. p., 2017. Web. doi:10.1016/J.JSSC.2017.05.019.
Tamilmani, Vairapperumal, Nair, Balachandran Unni, & Sreeram, Kalarical Janardhanan, E-mail: kjsreeram@clri.res.in. Phosphate modulated luminescence in lanthanum vanadate nanorods- Catechin, polyphenolic ligand. United States. doi:10.1016/J.JSSC.2017.05.019.
Tamilmani, Vairapperumal, Nair, Balachandran Unni, and Sreeram, Kalarical Janardhanan, E-mail: kjsreeram@clri.res.in. Tue . "Phosphate modulated luminescence in lanthanum vanadate nanorods- Catechin, polyphenolic ligand". United States. doi:10.1016/J.JSSC.2017.05.019.
@article{osti_22742024,
title = {Phosphate modulated luminescence in lanthanum vanadate nanorods- Catechin, polyphenolic ligand},
author = {Tamilmani, Vairapperumal and Nair, Balachandran Unni and Sreeram, Kalarical Janardhanan, E-mail: kjsreeram@clri.res.in},
abstractNote = {Rare earth orthovanadates and phosphates offer a very high opportunity for fabrication of nanoscale devices that exploit their luminescence properties. Optimization of luminescence by way of modulation of size, shape, structure, and morphology has been an area of study for several researchers. There has been a debate as to whether doped orthophosphate or orthovanadate is better luminescent material as both are chemically similar. It has been reported earlier that catechin hydrate can play the role of a structure director and thus influence the luminescence properties of orthovanadates. In this work, a catechin modulated the synthesis of Eu-doped lanthanum orthophosphate by phosphate substitution into vanadate host lattice is reported. A mechanistic understanding of the luminescence changes in LaMO{sub 4} has been proposed. During the substitution of V with P, catechin modulates the structure between 1D nanorods and nanowires. The host crystal structure, shape, and size influence the luminescence properties in doped LaMO{sub 4}. - Graphical abstract: Schematic illustration for the formation process of LAP nanowires using catechin. Display Omitted - Highlights: • Lanthanum phosphate nanowires are prepared by catechin -natural product. • Morphology tuned from nanorods to nanowires with tune in host lattice. • Quenching of luminescence – Zeolite water and Eu{sup 3+} to Eu{sup 2+} reduction. • The crystal structures was investigated by XRD, NMR, XPS and EPR.},
doi = {10.1016/J.JSSC.2017.05.019},
journal = {Journal of Solid State Chemistry},
issn = {0022-4596},
number = ,
volume = 252,
place = {United States},
year = {2017},
month = {8}
}