| People | Locations | Statistics |
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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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Rompel, Annette
University of Vienna
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2023Synthesis, Characterization, and Antibacterial Activity of Ni-Substituted Krebs-type Sandwich-Tungstobismuthates Functionalized with Amino Acidscitations
- 2022Synthesis and characterization of the 'Japanese rice-ball'-shaped molybdenum blue Na4[Mo2O2(OH)4(C6H4NO2)2]2[Mo120Ce6O366H12(OH)2(H2O)76]~200H2Ocitations
- 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
- 2020Toward Artificial Mussel-Glue Proteins: Differentiating Sequence Modules for Adhesion and Switchable Cohesion
- 2020Toward Artificial Mussel-Glue Proteins: Differentiating Sequence Modules for Adhesion and Switchable Cohesion
- 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
- 2018Iron(II) and copper(II) paratungstates B: a single-crystal X-ray diffraction studycitations
- 2018The antibacterial activity of polyoxometalates: structures, antibiotic effects and future perspectivescitations
- 2015Tris-Functionalized Hybrid Anderson Polyoxometalates: Synthesis, Characterization, Hydrolytic Stability and Inversion of Protein Surface Chargecitations
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>