scholarly journals Lanthanide complexes of DOTA-nitroxide conjugates for redox imaging: Spectro-electrochemistry, CEST, relaxivity, and cytotoxicity.

2021 ◽  
Author(s):  
Damien Mouchel dit Leguerrier ◽  
Richard Barre ◽  
Quentin Ruet ◽  
Daniel Imbert ◽  
Christian Philouze ◽  
...  
Keyword(s):  
Lanthanide Complexes ◽  
Redox Active ◽  
Amide Derivatives ◽  
L1 And L2

The lanthanide(III) complexes (Gd, Eu, Dy, Yb) of DOTA tris(amide) and bis(amide) derivatives (L1 and L2) featuring one redox active TEMPO arm were prepared. Ligand L2 harbours an alkyne fragment...

scholarly journals Structural and spectroscopic investigations of nine-coordinate redox active lanthanide complexes with a pincer O,N,O ligand

2020 ◽  
Vol 49 (24) ◽  
pp. 8238-8246 ◽  
Author(s):  
D. Mouchel Dit Leguerrier ◽  
R. Barré ◽  
M. Bryden ◽  
D. Imbert ◽  
C. Philouze ◽  
...  
Keyword(s):  
Lanthanide Complexes ◽  
Radical Species ◽  
Spectroscopic Investigations ◽  
Redox Active

Three ligand molecules coordinate under their anionic diamagnetic form; the complexes (Gd, Eu, Yb, Lu) can undergo reversible oxidations, affording radical species, as demonstrated by spectro-electrochemistry.

scholarly journals In situ synthesis of lanthanide complexes supported by a ferrocene diamide ligand: extension to redox-active lanthanide ions

2015 ◽  
Vol 39 (10) ◽  
pp. 7696-7702 ◽  
Author(s):  
Wenliang Huang ◽  
Jonathan L. Brosmer ◽  
Paula L. Diaconescu
Keyword(s):  
Rare Earth ◽  
Lanthanide Complexes ◽  
In Situ Synthesis ◽  
Lanthanide Ions ◽  
Redox Active

The scope of an in situ method to prepare rare-earth alkyl and halide precursors was extended to cerium, praseodymium, samarium, terbium, thulium, and ytterbium.

scholarly journals Homoleptic Lanthanide Complexes Containing a Redox-Active Ligand and the Investigation of Their Electronic and Photophysical Properties

Inorganics ◽  
2018 ◽  
Vol 6 (2) ◽  
pp. 56
Author(s):  
Robin Taylor ◽  
Nico Bonanno ◽  
Mihaela Cibian ◽  
Jeetkia Yadav ◽  
Harlyn Silverstein ◽  
...  
Keyword(s):  
Lanthanide Complexes ◽  
Photophysical Properties ◽  
Redox Active Ligand ◽  
Active Ligand ◽  
Redox Active

Noncovalent immobilization and surface characterization of lanthanide complexes on carbon electrodes

2017 ◽  
Vol 46 (35) ◽  
pp. 11779-11789 ◽  
Author(s):  
Davide Lionetti ◽  
Victor W. Day ◽  
James D. Blakemore
Keyword(s):  
Lanthanide Complexes ◽  
Surface Characterization ◽  
Spectroscopic Characterization ◽  
Carbon Electrodes ◽  
Surface Immobilization ◽  
Redox Active

Surface immobilization and spectroscopic characterization of redox-active molecular lanthanide complexes is demonstrated on carbon electrodes.

Seven-coordinate lanthanide complexes with a tripodal redox active ligand: structural, electrochemical and spectroscopic investigations

2018 ◽  
Vol 47 (31) ◽  
pp. 10742-10751 ◽  
Author(s):  
Jennifer K. Molloy ◽  
Christian Philouze ◽  
Lionel Fedele ◽  
Daniel Imbert ◽  
Olivier Jarjayes ◽  
...  
Keyword(s):  
Lanthanide Complexes ◽  
Phenoxyl Radical ◽  
Radical Formation ◽  
Radical Species ◽  
Spectroscopic Investigations ◽  
Redox Active Ligand ◽  
Active Ligand ◽  
Redox Active

One-electron oxidation of the lanthanide complexes affords phenoxyl radical species. Radical formation is accompanied by a quenching of the metal-based luminescence.

scholarly journals Frontispiece: The First Lanthanide Complexes with a Redox-Active Sulfur Diimide Ligand: Synthesis and Characterization of [LnCp*2 (RN=)2 S], Ln=Sm, Eu, Yb; R=SiMe3

2017 ◽  
Vol 23 (6) ◽  
Author(s):  
Svetlana V. Klementyeva ◽  
Nina P. Gritsan ◽  
Marat M. Khusniyarov ◽  
Alexander Witt ◽  
Alexey A. Dmitriev ◽  
...  
Keyword(s):  
Lanthanide Complexes ◽  
Synthesis And Characterization ◽  
Redox Active ◽  
Ligand Synthesis

scholarly journals HOCl Responsive Lanthanide Complexes Using Hydroquinone Caging Units

Molecules ◽  
2020 ◽  
Vol 25 (8) ◽  
pp. 1959
Author(s):  
Elena Del Giorgio ◽  
Thomas Just Sørensen
Keyword(s):  
Lanthanide Complexes ◽  
Design Principle ◽  
Hypochlorous Acid ◽  
Molecular Probes ◽  
Lanthanide Ions ◽  
Redox Biology ◽  
Redox Active ◽  
Trivalent Lanthanide ◽  
Sustained Effort ◽  
Triton X

Redox biology is still looking for tools to monitor redox potential in cellular biology and, despite a large and sustained effort, reliable molecular probes have yet to emerge. In contrast, molecular probes for reactive oxygen and nitrogen have been widely explored. In this manuscript, three kinetically inert lanthanide complexes that selectively react with hypochlorous acid are prepared and characterized. The design is based on 1,4,7,10-tetraazacyclododecane-1,4,7-triacetic acid (DO3A) and 1,4,7,10-tetraazacyclododecane-1,7-diacetic acid (DO2A) ligands appended with one or two redox active hydroquinone derived arms, thereby forming octadentate ligands ideally suited to complex trivalent lanthanide ions. The three complexes are found to react selectively with hypochlorous acid to form highly symmetric lanthanide(III) 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacedic acid (DOTA) complexes. The conversion of the probe to [Ln.DOTA]− is followed by luminescence, absorption, and NMR spectroscopy in a model system comprised of a Triton-X modified HEPES buffer. It was concluded that the design principle works, and that simple caging units like hydroquinones can work well in conjugation with lanthanide(III) complexes.

scholarly journals Synthesis and characterisation of bismacrocyclic DO3A-amide derivatives – an approach towards metal-responsive PARACEST agents

2016 ◽  
Vol 45 (15) ◽  
pp. 6555-6565 ◽  
Author(s):  
Nevenka Cakić ◽  
Tatjana Ž. Verbić ◽  
Ratomir M. Jelić ◽  
Carlos Platas-Iglesias ◽  
Goran Angelovski
Keyword(s):  
Lanthanide Complexes ◽  
Zinc Ions ◽  
Amide Derivatives ◽  
Calcium Magnesium

Three bismacrocyclic amide derivatives bearing two types of chelating moieties were prepared. The properties of their lanthanide complexes in the absence and presence of calcium, magnesium or zinc ions were studied.

The First Lanthanide Complexes with a Redox-Active Sulfur Diimide Ligand: Synthesis and Characterization of [LnCp*2(RN=)2S], Ln=Sm, Eu, Yb; R=SiMe3

2016 ◽  
Vol 23 (6) ◽  
pp. 1278-1290 ◽  
Author(s):  
Svetlana V. Klementyeva ◽  
Nina P. Gritsan ◽  
Marat M. Khusniyarov ◽  
Alexander Witt ◽  
Alexey A. Dmitriev ◽  
...  
Keyword(s):  
Lanthanide Complexes ◽  
Synthesis And Characterization ◽  
Redox Active ◽  
Ligand Synthesis

Structural and spectroscopic investigations of redox active seven coordinate luminescent lanthanide complexes

2018 ◽  
Vol 483 ◽  
pp. 609-617 ◽  
Author(s):  
Jennifer K. Molloy ◽  
Lionel Fedele ◽  
Olivier Jarjayes ◽  
Christian Philouze ◽  
Daniel Imbert ◽  
...  
Keyword(s):  
Lanthanide Complexes ◽  
Spectroscopic Investigations ◽  
Redox Active
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