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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Roller, Alexander
University of Vienna
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (16/16 displayed)
- 2024Fungal Carbon: A Cost-Effective Tunable Network Template for Creating Supercapacitorscitations
- 2023Latonduine-1-Amino-Hydantoin Hybrid, Triazole-Fused Latonduine Schiff Bases and Their Metal Complexes: Synthesis, X-ray and Electron Diffraction, Molecular Docking Studies and Antiproliferative Activitycitations
- 2023Solid-state 13C NMR, X-ray diffraction and structural study of methyl 4-O-methyl β-D-glucopyranosides with all eight possible methyl-substitution patternscitations
- 2023A Novel Molecular Assembly of a Cobalt-Sulfate Coordination Polymer and Melaminecitations
- 2021Defect {((WO7)-O-VI)W-4(VI)} and Full {((WO7)-O-VI)W-5(VI)} Pentagonal Units as Synthons for the Generation of Nanosized Main Group V Heteropolyoxotungstatescitations
- 2020Naphthoquinones of natural origin: Aqueous chemistry and coordination to half-sandwich organometallic cationscitations
- 2020Cation-Directed Synthetic Strategy Using 4f Tungstoantimonates as Nonlacunary Precursors for the Generation of 3d-4f Clusterscitations
- 2019Synthesis, crystal structure and characterization of two new Cr(III)-substituted polyoxotungstates: [Cr((OCH2)3CCH2OH)2W6O18]3- and [H3Cr2W10O38(H2O)2]7-citations
- 2018Complexes of pyridoxal thiosemicarbazones formed with vanadium(IV/V) and copper(II)citations
- 2018Iron(II) and copper(II) paratungstates B: a single-crystal X-ray diffraction studycitations
- 2017Introducing the 4-Phenyl-1,2,3-Triazole Moiety as a Versatile Scaffold for the Development of Cytotoxic Ruthenium(II) and Osmium(II) Arene Cyclometalatescitations
- 2017Comparative equilibrium and structural studies of new pentamethylcyclopentadienyl rhodium complexes bearing (O, N) donor bidentate ligandscitations
- 2016Synthesis, characterisation and cytotoxic activity of organoruthenium(II)-halido complexes with 1H-benzimidazole-2-carboxylic acidcitations
- 2015Tris-Functionalized Hybrid Anderson Polyoxometalates: Synthesis, Characterization, Hydrolytic Stability and Inversion of Protein Surface Chargecitations
- 2014Antitumor pentamethylcyclopentadienyl rhodium complexes of maltol and allomaltolcitations
- 2011Ruthenium- and Osmium-Arene Complexes of 2-Substituted Indolo[3,2-c]quinolines: Synthesis, Structure, Spectroscopic Properties, and Antiproliferative Activitycitations
Places of action
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article
Tris-Functionalized Hybrid Anderson Polyoxometalates: Synthesis, Characterization, Hydrolytic Stability and Inversion of Protein Surface Charge
Abstract
<p>Single- and double-sided functionalized hybrid organic-inorganic Anderson polyoxomolybdates with GaIII and Fe III positioned as central heteroatoms have been synthesized in a mild, two-step synthesis in an aqueous medium. Compounds 1-4 were isolated as hydrated salts, [TBA]<sub>3</sub>[GaMo<sub>6</sub>O<sub>18</sub>(OH)<sub>3</sub>{(OCH<sub>2</sub>)<sub>3</sub>CCH<sub>2</sub>OH}]12H<sub>2</sub>O (1) (TBA= tetrabutylammonium), Na<sub>3</sub>[FeMo<sub>6</sub>O<sub>18</sub>{(OCH<sub>2</sub>)<sub>3</sub>CCH<sub>2</sub>OH}<sub>2</sub>] × 11H<sub>2</sub>O (2), [TMA]<sub>2</sub>[GaMo<sub>6</sub>O<sub>18</sub>(OH)<sub>3</sub>{(OCH<sub>2</sub>)<sub>3</sub>CNH<sub>3</sub>}] × 7H<sub>2</sub>O (3) (TMA = tetramethylammonium), and Na[TMA]<sub>2</sub>[FeMo<sub>6</sub>O<sub>18</sub>-(OH)<sub>3</sub>{(OCH2)<sub>23</sub>CNH}](OH)&times 6H<sub>2</sub>O (4). All the compounds were characterized based on single-crystal X-ray diffraction (SXRD), FTIR, UV/Vis, thermogravimetric, ESI-MS, NMR, and elemental analyses. Compound 1 was also crystallized with two smaller organic cations, giving [TMA]<sub>3</sub>[GaMo<sub>6</sub>O<sub>183</sub>(OH)-{(OCH2)<sub>2</sub>)<sub>3</sub>CCH2OH}] &times n H<sub>2</sub>O (5) and [GDM]<sub>3</sub>[GaMo6O<sub>183</sub>(OH)-{(OCH2)<sub>23</sub>CCH2OH}] &times n H<sub>2</sub>O (6) (GDM = guanidinium) and were characterized based on UV/Vis, NMR, FTIR, and elemental analyses. The use of these compounds as additives in macromolecular crystallography was investigated by examining their hydrolytic stability by using ESI-MS in a pH range of 4 to 9. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) analysis showed that BSA remains intact in a solution containing up to 100 equivalents of 1 or 4 over more than four days at 20 8C. Zeta potential measurements demonstrate that 1-4 induce charge inversions on the positively charged surface of BSA (1 mgmL -1) with concentrations starting as low as 1.29 mm for compounds 1 and 2, which have the highest negative surface charge.</p>