Lanthanide Photonics: Shaping the Nanoworld

Bünzli, Jean‐Claude G.

doi:10.1016/j.trechm.2019.05.012

Cited by 114 publications

(90 citation statements)

References 55 publications

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“…Notably, contrasting the intermetallics, the typical optical transparency of lanthanide-based coordination solids provides for exploitation of optical properties of complex tilings. For instance, ATs offer the potential of photonic band gap opening 23 , 48 , which in conjunction with the unique luminescence characteristics of the lanthanide ions 31 , lays the foundation for materials with novel optical properties. In addition, the field of molecular magnetism has recently seen a blossoming of approximate C 5 symmetric single-ion magnets with exceedingly high magnetization reversal barriers 49 – 51 .…”

Section: Discussionmentioning

confidence: 99%

“…Similar to uranium, the lanthanide ion series distinguishes itself by a strong propensity to high coordination numbers. In addition, the lanthanide ions exhibit paramount plasticity in their chemical bonding and unique optical and magnetic properties, of immense technological importance, which are not paralleled by any other elements 31 . Motivated by the possibilities to extend these properties to ATs and quasiperiodic materials, we, herein, report a coordination-assembly strategy and the crystallographic characterization of the first example of a lanthanide-based AT in a bulk, molecule-based material.…”

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confidence: 99%

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Chemical engineering of quasicrystal approximants in lanthanide-based coordination solids

2020

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Tessellation of self-assembling molecular building blocks is a promising strategy to design metal-organic materials exhibiting geometrical frustration and ensuing frustrated physical properties. Appearing in two-dimensional quasiperiodic phases, tilings consisting of five-vertex nodes are regarded as approximants for quasicrystals. Unfortunately, these structural motifs are exceedingly rare due to the complications of acquiring five-fold coordination confined to the plane. Lanthanide ions display the sufficient coordinative plasticity, and large ionic radii, to allow their incorporation into irregular molecule-based arrays. We herein present the use of ytterbium(II) as a five-vertex node in a two-dimensional coordination solid, YbI2(4,4′-bipyridine)2.5. The semi-regular Archimedean tessellation structure verges on quasicrystallinity and paves the way for lanthanide-based metal-organic materials with interesting photonic and magnetic properties.

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Section: Discussionmentioning

confidence: 99%

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confidence: 99%

Chemical engineering of quasicrystal approximants in lanthanide-based coordination solids

2020

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“…The development of highly luminescent compounds that are potentially applicable in modern optical materials is still a great challenge due to the rapidly evolving requirements of practical life [ 1 , 2 ]. In coordination chemistry of lanthanide elements, the key role among organic ligands has always belonged to carboxylates [ 3 , 4 ].…”

Section: Introductionmentioning

confidence: 99%

Diarylphosphate as a New Route for Design of Highly Luminescent Ln Complexes

et al. 2020

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Organophosphate-chloride complexes [{(2,6-iPr2C6H3-O)2POO}2LnCl(CH3OH)4]·2CH3OH, Ln = Nd (1), Eu (2), Gd (3), and Tb (4) have been obtained and structurally characterized. Their reaction with 2,2′:6′,2″-terpyridine leads to the formation of 1:1 adducts ([{(2,6-iPr2C6H3-O)2POO}2LnCl(terpy)(H2O)2(CH3OH)], Ln = Eu (5), Gd (6), Tb (7) with exception of Nd, where tris-diisopropylphenylphosphate complex [{(2,6-iPr2C6H3-O)2POO}3Nd) (terpy)(H2O)(CH3OH)] (8) was obtained due to the ligand metathesis. A bright luminescence observed for the Eu and Tb organophosphate complexes is the first example of an application of organophosphate ligands for 4f-ions luminescence sensitization. Photophysical properties of all complexes were analyzed by optical spectroscopy and an energy transfer scheme was discussed. A combination of two types of ligands into the coordination sphere (phosphate and phenanthroline) allows designing the Eu surrounding with very high intrinsic quantum yield QEuEu (0.92) and highly luminescent Ln complexes for both visible and near-infrared (NIR) regions.

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“…The main limitation of atomically precise Au NCs as optical probes is related to their low quantum yield (QY) one order of magnitude lower than those of quantum dots, 83 lanthanide NPs, 84 and organic dyes 85 especially in the NIR/SWIR windows. Most of the Au NCs exhibit a QY o 1% with the well-characterized Au 25 SG 18 exhibiting a QY B 0.3%, 86 which is 10 7 times higher than that of bulk gold.…”

Section: Synthesis Parametersmentioning

confidence: 99%