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Paul Kögerler
Forschungszentrum Jülich
Cluster (physics)Inorganic chemistryChemistryPhotochemistryLigand
370Publications
52H-index
8,676Citations
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Publications 364
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#1Carolin Schmitz-Antoniak (Forschungszentrum Jülich)H-Index: 8
#2Natalya V. Izarova (Forschungszentrum Jülich)H-Index: 6
Last. Paul Kögerler (Forschungszentrum Jülich)H-Index: 52
view all 9 authors...
Abstract Polyoxopalladates hosting 3d, 4d or 4f central ions form a new class of molecular materials with well-defined, tunable morphology and ions coordination to be considered as model systems for basic research. We investigated the isotropic x-ray absorption near-edge structure (XANES), x-ray magnetic circular dichroism (XMCD), and x-ray magnetic linear dichroism (XMLD) to monitor the influence of symmetry changes on electronic and magnetic properties. After a brief introductory review about ...
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#1Dipmalya BasakH-Index: 2
#2Jan van LeusenH-Index: 12
Last. Debashis RayH-Index: 24
view all 5 authors...
Three new cobalt(II/III)-dysprosium(III) complexes, [DyIII3CoII2CoIII2(L1)2(O2CCMe3)8(OH)4(OMe)2(H2O)4]•[Dy(η1-O2CCMe3)2(η2-O2CCMe3)2(MeOH)2]•4H2O (1), [DyIII3CoII2CoIII2(L2)2(O2CCMe3)8(OH)4(OMe)2(MeOH)2(H2O)2]•[Dy(η1-O2CCMe3)2(η2- O2CCMe3)2(MeOH)2]•4MeOH (2) and [DyIII2CoII2CoIII2(L2)2(O2CCMe3)10(OH)2] (3) have been reported. In the heptanuclear 3d-4f monocationic aggregates in 1 and 2 the three dysprosium and four cobalt sites are arranged into a vertex shared dicubane structure, induced by tw...
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#1Muhammad Arif Nadeem (QAU: Quaid-i-Azam University)H-Index: 14
#2Maggie C. C. Ng (UNSW: University of New South Wales)H-Index: 2
Last. John A. Stride (UNSW: University of New South Wales)H-Index: 23
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An unprecedented spin cluster-based network architecture {[Ni II 2 (pdaa)(OH) 2 (H 2 O)] n (1; H 2 pdaa =1,4-phenylene diacetic acid)}, comprising 1D linear chains of Ni II ions crosslinked via Ni 4 O 4 -cubanes, forms under hydrothermal conditions; this 3D coordination network exhibits magnetic ordering at 23.9 K as well as a second magnetic ordering process at 2.8 K likely associated with a structural phase transition.
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#1Felix Danker (CAU: University of Kiel)H-Index: 1
#2Carolin Anderer (CAU: University of Kiel)H-Index: 3
Last. Paul KögerlerH-Index: 52
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#1Ali S. Mougharbel (JU: Jacobs University Bremen)H-Index: 2
#2Saurav Bhattacharya (JU: Jacobs University Bremen)H-Index: 2
Last. Ulrich Kortz (JU: Jacobs University Bremen)H-Index: 56
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We report on the synthesis and structural characterization of two series of lanthanide-containing 22-tungsto-2-germanates. The first series corresponds to a family of polyanions with the formula [L...
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#1Dipmalya Basak (IIT-KGP: Indian Institute of Technology Kharagpur)H-Index: 2
#2Jan van Leusen (RWTH Aachen University)H-Index: 12
Last. Debashis Ray (IIT-KGP: Indian Institute of Technology Kharagpur)H-Index: 24
view all 6 authors...
The synthesis, structural characterization, and magnetic behavior of a new family of binuclear CoII–LnIII complexes of formula [LnIIICoIIL2(NO3)3]·H2O (Ln = La, 1; Gd, 2; Tb, 3; Dy, 4; Ho, 5; HL = 3-methoxy-N-(2-(methylsulfanyl)phenyl)salicylaldimine) have been reported. The chosen ligand system HL has adjacent soft ONS and hard OO binding pockets ideal for selective coordination of CoII and 4f metal ions. All the complexes 1–5 exhibit a CoII center in a highly distorted octahedral geometry with...
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#2Denise CamozziH-Index: 1
Last. Ulrich M. Engelmann (RWTH Aachen University)H-Index: 3
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Superparamagnetic iron oxide nanoparticles (SPION) are extensively used for magnetic resonance imaging (MRI) and magnetic particle imaging (MPI), as well as for magnetic fluid hyperthermia (MFH). We here describe a sequential centrifugation protocol to obtain SPION with well-defined sizes from a polydisperse SPION starting formulation, synthesized using the routinely employed co-precipitation technique. Transmission electron microscopy, dynamic light scattering and nanoparticle tracking analyses...
2 CitationsSource
#1Martin Fuchs (RWTH Aachen University)H-Index: 2
#2Sebastian Schmitz (Leibniz Association)H-Index: 5
Last. Sonja Herres-Pawlis (RWTH Aachen University)H-Index: 26
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Abstract Materials combining bio-based resource and degradability aspects such as polylactide (PLA) can represent a sustainable alternative to commercially used oil-based plastics. With tin octanoate (Sn(Oct)2) as the catalyst of choice for industrial scale PLA production, traces of the toxic heavy metal can be released into the environment, rendering PLA unsuitable for specific applications. Herein we present four new homoleptic zinc Schiff base complexes that offer facile synthesis and can be ...
2 CitationsSource
#1Henrik Flötotto (RWTH Aachen University)H-Index: 1
#2Tim Secker (RWTH Aachen University)H-Index: 2
Last. Claire Besson (GW: George Washington University)H-Index: 16
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#1Henrik Flötotto (RWTH Aachen University)H-Index: 1
#2Tim Secker (RWTH Aachen University)H-Index: 2
Last. Claire Besson (GW: George Washington University)H-Index: 16
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