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Taming Lanthanide-Centered Upconversion at the Molecular Level

Eliseeva, Svetlana
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Published in Inorganic chemistry. 2016, vol. 55, no. 20, p. 9964-9972
Abstract Considered at the beginning of the 21th century as being incompatible with the presence of closely bound high-energy oscillators, lanthanide-centered superexcitation, which is the raising of an already excited electron to an even higher level by excited-state energy absorption, is therefore a very active topic strictly limited to the statistical doping of low-phonon bulk solids and nanoparticles. We show here that molecular lanthanide-containing coordination complexes may be judiciously tuned to overcome these limitations and to induce near-infrared (NIR)-to-visible (VIS)-light upconversion via the successive absorption of two low-energy photons using linear-optical responses. Whereas single-ion-centered excited-state absorption mechanisms remain difficult to implement in lanthanide complexes, the skillful design of intramolecular intermetallic energy-transfer processes operating in multimetallic architectures is at the origin of the recent programming of erbium-centered molecular upconversion.
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Research groups Groupe Hauser
Groupe Piguet
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SUFFREN, Yan Jonathan Mathieu et al. Taming Lanthanide-Centered Upconversion at the Molecular Level. In: Inorganic chemistry, 2016, vol. 55, n° 20, p. 9964-9972. doi: 10.1021/acs.inorgchem.6b00700 https://archive-ouverte.unige.ch/unige:89168

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Deposited on : 2016-11-21

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