UV Emission of Gd3+ in the Presence of Cu2+: Towards Luminescence Quenching through Quantum Cutting?

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Abstract

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 Cu2+ absorption band grows steadily, whereas the UV emission from Gd3+ ions is progressively quenched. The data, thus, suggests the existence of a Gd3+→Cu2+ energy-transfer process ocurring through quantum cutting. A downconversion/cross-relaxation pathway proceeding through a virtual state in Gd3+ is proposed. These findings suggest gadolinium(III) could potentially be used in the optical sensing of copper(II).
Original languageAmerican English
JournalChemPhysChem
Volume16
DOIs
StatePublished - Jun 8 2015

DC Disciplines

  • Physical Sciences and Mathematics

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