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UV Emission of Gd 3+ in the Presence of Cu 2+ : Towards Luminescence Quenching through Quantum Cutting?
Author(s) -
Jiménez José A.
Publication year - 2015
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201500117
Subject(s) - photoluminescence , gadolinium , barium , luminescence , copper , quenching (fluorescence) , analytical chemistry (journal) , absorption (acoustics) , materials science , ion , spectroscopy , ultraviolet , relaxation (psychology) , chemistry , inorganic chemistry , fluorescence , optoelectronics , optics , physics , organic chemistry , chromatography , quantum mechanics , composite material , social psychology , psychology , metallurgy
The first investigation into the ultraviolet (UV) photoluminescence of gadolinium(III) in the presence of copper(II) is reported. A melt‐quenched barium phosphate glass was used as a model matrix. The optical spectroscopy assessment shows that with increasing CuO concentration the Cu 2+ absorption band grows steadily, whereas the UV emission from Gd 3+ ions is progressively quenched. The data, thus, suggests the existence of a Gd 3+ →Cu 2+ energy‐transfer process ocurring through quantum cutting. A downconversion/cross‐relaxation pathway proceeding through a virtual state in Gd 3+ is proposed. These findings suggest gadolinium(III) could potentially be used in the optical sensing of copper(II).