Manuel Wilke

ORCID: 0000-0003-0397-2246
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • X-ray Diffraction in Crystallography
  • Crystallization and Solubility Studies
  • Crystallography and molecular interactions
  • Metal-Organic Frameworks: Synthesis and Applications
  • Chemical Synthesis and Characterization
  • Radioactive element chemistry and processing
  • Cultural Heritage Materials Analysis
  • Force Microscopy Techniques and Applications
  • Polyoxometalates: Synthesis and Applications
  • Inorganic Chemistry and Materials
  • Crystal structures of chemical compounds
  • Perovskite Materials and Applications
  • Electrochemical Analysis and Applications
  • X-ray Spectroscopy and Fluorescence Analysis
  • Recycling and utilization of industrial and municipal waste in materials production
  • Organophosphorus compounds synthesis
  • Organic and Molecular Conductors Research
  • Glass properties and applications
  • Minerals Flotation and Separation Techniques
  • Electrodeposition and Electroless Coatings
  • Ion-surface interactions and analysis
  • Organometallic Compounds Synthesis and Characterization
  • Catalysis and Oxidation Reactions
  • Magnetism in coordination complexes
  • Pigment Synthesis and Properties

Forschungszentrum Jülich
2022

Paul Scherrer Institute
2018-2021

Swiss Light Source
2019

Federal Institute For Materials Research and Testing
2014-2017

Humboldt-Universität zu Berlin
1995-2017

University of California, Los Angeles
1986

United States Department of Veterans Affairs
1986

University of California, San Francisco
1986

National Institute of Standards and Technology
1981

Abstract The combination of two analytical methods including time‐resolved in situ X‐ray diffraction (XRD) and Raman spectroscopy provides a new opportunity for detailed analysis the key mechanisms milling reactions. To prove general applicability our setup, we investigated mechanochemical synthesis four archetypical model compounds, ranging from 3D frameworks through layered structures to organic molecular compounds. reaction mechanism each compound could be elucidated. results clearly show...

10.1002/anie.201409834 article EN Angewandte Chemie International Edition 2014-12-21

We present a first direct measurement of the temperature during milling combined with<italic>in situ</italic>Raman spectroscopy monitoring.

10.1039/c6cc08950j article EN Chemical Communications 2017-01-01

Abstract The combination of two analytical methods including time‐resolved in situ X‐ray diffraction (XRD) and Raman spectroscopy provides a new opportunity for detailed analysis the key mechanisms milling reactions. To prove general applicability our setup, we investigated mechanochemical synthesis four archetypical model compounds, ranging from 3D frameworks through layered structures to organic molecular compounds. reaction mechanism each compound could be elucidated. results clearly show...

10.1002/ange.201409834 article EN Angewandte Chemie 2014-12-21

The structure and the formation pathway of a new theobromine : oxalic acid (2 1) cocrystal are presented.

10.1039/c4ce02066a article EN cc-by CrystEngComm 2014-11-19

Two metal organic structures composed of the ligands benzene-1,4-dicarboxylate and pyridine-2,5-dicarboxylate bismuth cations are presented: (H<sub>2</sub>Im)[Bi(1,4-bdc)<sub>2</sub>] (<bold>1</bold>) [Bi(pydc)(NO<sub>3</sub>)<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub>]·H<sub>2</sub>O (<bold>2</bold>) (bdc = benzenedicarboxylate, H<sub>2</sub>Im imidazole cation, pydc pyridinedicarboxylate).

10.1039/c3ce42633e article EN cc-by CrystEngComm 2014-01-01

New and known cadmium phenylphosphonates were prepared mechanochemically their synthesis mechanism was determined<italic>in situ</italic>.

10.1039/c6ra01080f article EN cc-by RSC Advances 2016-01-01

Abstract The in situ investigations of the mechanochemical synthesis four hybrid organic–inorganic lead(II) iodides with formula (C(NH 2 ) 3 n PbI 2+ ( n= 1 , and 4 are presented. Synchrotron X‐ray diffraction data show that guanidinium easily convert into each other. Although end product is dictated by initial stoichiometry, complex pathways were found different behaviors compounds terms nucleation, growth, intermediate formation. This appears to be linked respective structural features...

10.1002/chem.201804066 article EN Chemistry - A European Journal 2018-09-19

We describe a fast and effective synthesis for molecular metal phosphonates. Isomorphic compounds [M(ii)(HO3PPh)2(H2O3PPh)2(H2O)2] (M = Mn (1), Co (2), Ni (3); Ph C6H5) were obtained by grinding. The complexes are mononuclear containing neutral monodeprotonated phenylphosphonic acid water as ligands. crystal structures determined using powder X-ray diffraction (PXRD) data validated extended absorption fine structure (EXAFS) data. Combined synchrotron XRD measurements Raman spectroscopy...

10.1039/c6dt00787b article EN cc-by-nc Dalton Transactions 2016-01-01

Time-resolved mechanochemical cocrystallisation studies have so-far focused solely on neat and liquid-assisted grinding. Here, we report the investigation of polymer-assisted grinding reactions using in situ X-ray powder diffraction, revealing that reaction rate is almost double compared to independent molecular weight amount polymer additive used.

10.1039/d0cc03460f article EN Chemical Communications 2020-01-01

<italic>In situ</italic> investigation and elucidation of the formation a POM@MOF host guest system obtained by mechanosynthesis.

10.1039/c5ce01868d article EN cc-by CrystEngComm 2016-01-01

The controlled synthesis of superparamagnetic iron oxide nanoparticles is crucial for a variety biomedical applications. Among different routes, thermal precursor decomposition methods are the most versatile, yielding monodisperse on multigram scale. Recent in situ kinetic studies nucleation and growth processes during routes revealed nonclassical paths involving amorphous phases aggregative steps. With knowledge this mechanism, we systematically examined range heat-up to understand conclude...

10.1021/acs.jpcc.2c05380 article EN The Journal of Physical Chemistry C 2022-12-09

Crystalline arrays of the gastric H,K-ATPase were obtained in membrane preparations from hog and rabbit mucosa.The lattice was formed rapidly a medium containing K', vanadate, Mg"', dimethyl sulfoxide at pH 6.0-6.9 imidazole buffer 4 to 22 "C.The crystal exhibited P2 symmetry, unit cell dimension (a = 5.6, b 11, c 10 nm) could accommodate 2 polypeptides mass 116-129 kDa.In addition, isolated preparation contained previously undescribed long cylindrical structures 16 nm thick.These consisted...

10.1016/s0021-9258(17)36111-2 article EN cc-by Journal of Biological Chemistry 1986-01-01

Zn and Zn-TiO2 coatings were galvanostatically electrodeposited on steel substrates from chloride- sulfate-plating baths. The influence of the electrolyte type dispersion behavior TiO2 nano-particles as well amount incorporation was studied. electrokinetic titania in diluted electrolytes is strongly influenced by specific adsorption SO42− anions. Chemical depth profile analysis using glow discharge optical emission spectroscopy confirmed particles throughout layers (up to 0.53 wt% 0.78...

10.1149/2.066404jes article EN Journal of The Electrochemical Society 2014-01-01

Mechanochemistry offers a new route to polyoxometalates (POMs) under mild conditions. The molybdenum isoPOM heptamolybdate and the heteroPOMs of Strandberg- Keggin-type could be achieved from grinding together oxide, potassium or ammonium carbonate phosphate. reactions were controlled by stoichiometric ratio starting materials liquid used, with reaction times between 30 min 3 h. In situ investigations syntheses reveal formation intermediates during reactions. Their identification helps...

10.1039/d1sc05111c article EN cc-by-nc Chemical Science 2021-12-13

The crystal structures and syntheses of four different copper(ii) phenylphosphonates, the monophenylphosphonates α-, β-, γ-Cu(O3PC6H5)·H2O (α-CuPhPmH (1) β-CuPhPmH (2) γ-CuPhPmH (3)), diphosphonate Cu(HO3PC6H5)2·H2O (CuPhP2mH (4)), are presented. compounds were synthesized from solution at room temperature, elevated under hydrothermal conditions, mechanochemical conditions. α-CuPhPmH CuPhP2mH (4) solved powder X-ray diffraction data. structure was by single analysis. validated extended...

10.1039/c6dt02904c article EN cc-by Dalton Transactions 2016-01-01

10.1016/s0168-583x(96)00803-8 article EN Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms 1997-04-01

We present a series of remarkable structural transformations for family layered metal–organic frameworks (MOFs) in three-step solid-state reaction cycle. The cycle represents new dynamic behavior 2D coordination polymers and involves the sequence reactions: {[Mn2(ina)4(H2O)2]·2EtOH}n (JUK-1) → {(NH4)2[Mn(ina)2(NCS)2]}n·xH2O (JUK-2) {[Mn2(ina)2(Hina)2(NCS)2]}n (JUK-3) JUK-1 (Hina = isonicotinic acid), each accompanied by rearrangement intralayer bonds induced different external stimulus. In...

10.1039/c7ce00655a article EN CrystEngComm 2017-01-01

Abstract Divalent metal phosphonates are promising hybrid materials with a broad field of application. The rich coordination chemistry the phosphonate linkers enables formation structures different dimensionalities ranging from isolated complexes and layered to porous frameworks incorporating various functionalities through choice building blocks. In brief, offer an interesting opportunity for design multifunctional materials. Here, we provide short review on class divalent discussing their...

10.1515/zkri-2016-1971 article EN Zeitschrift für Kristallographie - Crystalline Materials 2016-10-18

10.1016/0168-583x(94)00813-2 article EN Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms 1995-06-01

The influence of sulfur compounds on the vaporization sodium from soda‐lime‐silica glass was investigated using newly developed stirrable transpiration apparatus (STA). With increasing concentration in either melt or atmosphere above it, sodium‐vapor density found to increase until attaining value over pure sodium‐sulfate liquid. At that point, became independent concentration, presumably due separation liquid glass. Since behavior containing similar molten Na 2 SO 4 , thermodynamically...

10.1111/j.1151-2916.1981.tb09878.x article EN Journal of the American Ceramic Society 1981-07-01

Abstract The mechanism for the mechanochemical synthesis of (C(NH 2 ) 3 PbI 5 and 4 6 their conversion into each other is presented. We investigated at different frequencies energies using in situ powder X‐ray diffraction. By splitting reaction single parts we could prove that formation simply dependent on energy mixing speed. nucleation instead slightly negative but speed, while its growth mostly independent any influence. were able to influence pathways by seeding mixture with a small...

10.1002/chem.202004431 article EN Chemistry - A European Journal 2020-12-15
Coming Soon ...