TY - JOUR A1 - Abouserie, Ahed A1 - Schilde, Uwe A1 - Taubert, Andreas T1 - The crystal structure of N-butylpyridinium bis(μ2-dichlorido)-tetrachloridodicopper(II), C₁₈H₂₈N₂Cu₂Cl₆ JF - Zeitschrift für Kristallographie - New Crystal Structures N2 - C₉H₁₄Cl₃CuN, monoclinic, P2₁/n (no. 14), a = 9.6625(6) Å, b = 9.3486(3) Å, c = 14.1168(8) Å, β = 102.288(5)°, V = 1245.97(11) ų, Z = 4, Rgₜ(F) = 0.0182, wRᵣₑf(F²) = 0.0499, T = 210(2) K. KW - Ionic Liquid Precursor KW - Thermochromism KW - Salts KW - Nanostructures KW - Catalysis KW - Solvents KW - Complex KW - Gas Y1 - 2018 U6 - https://doi.org/10.1515/NCRS-2018-0099 SN - 2194-4946 SN - 2196-7105 VL - 233 IS - 4 SP - 743 EP - 746 PB - de Gruyter CY - Berlin und München ER - TY - JOUR A1 - Kirchhecker, Sarah A1 - Tröger-Müller, Steffen A1 - Bake, Sebastian A1 - Antonietti, Markus A1 - Taubert, Andreas A1 - Esposito, Davide T1 - Renewable pyridinium ionic liquids from the continuous hydrothermal decarboxylation of furfural-amino acid derived pyridinium zwitterions JF - Green chemistry : an international journal and green chemistry resource N2 - Fully renewable pyridinium ionic liquids were synthesised via the hydrothermal decarboxylation of pyridinium zwitterions derived from furfural and amino acids in flow. The functionality of the resulting ionic liquid (IL) can be tuned by choice of different amino acids as well as different natural carboxylic acids as the counter-ions. A representative member of this new class of ionic liquids was successfully used for the synthesis of ionogels and as a solvent for the Heck coupling. Y1 - 2015 U6 - https://doi.org/10.1039/c5gc00913h SN - 1463-9262 SN - 1463-9270 VL - 17 IS - 8 SP - 4151 EP - 4156 PB - Royal Society of Chemistry CY - Cambridge ER - TY - JOUR A1 - Göbel, Ronald A1 - Stoltenberg, Marcus A1 - Krehl, Stefan A1 - Biolley, Christine A1 - Rothe, Regina A1 - Schmidt, Bernd A1 - Hesemann, Peter A1 - Taubert, Andreas T1 - A Modular Approach towards Mesoporous Silica Monoliths with Organically Modified Pore Walls: Nucleophilic Addition, Olefin Metathesis, and Cycloaddition JF - European journal of inorganic chemistry : a journal of ChemPubSoc Europe N2 - We have synthesized mesoporous silica (monoliths) with defined surface chemistry by means of a number of addition reactions: (i) coupling of an isocyanate to a surface-immobilized thiol, (ii) addition of an epoxide to a surface-immobilized thiol, (iii) cross-metathesis between two olefins, and (iv) Huisgen [2+3] cycloaddition of an alkyne-functionalized silica monolith with an azide. Functionalization of the mesopores was observed, but there are significant differences between individual approaches. Isocyanate and epoxide additions lead to high degrees of functionalization, whereas olefin metathesis and [2+3] cycloaddition are less effective. We further show that the efficiency of the modification is about twice as high in mesoporous silica particles than in macroscopic silica monoliths. KW - Mesoporous materials KW - Hybrid materials KW - Surface chemistry KW - Click chemistry KW - Nucleophilic addition Y1 - 2016 U6 - https://doi.org/10.1002/ejic.201500638 SN - 1434-1948 SN - 1099-0682 VL - 6 SP - 2088 EP - 2099 PB - Wiley-VCH CY - Weinheim ER - TY - JOUR A1 - Zehbe, Kerstin A1 - Kollosche, Matthias A1 - Lardong, Sebastian A1 - Kelling, Alexandra A1 - Schilde, Uwe A1 - Taubert, Andreas T1 - Ionogels Based on Poly(methyl methacrylate) and Metal-Containing Ionic Liquids: Correlation between Structure and Mechanical and Electrical Properties JF - International journal of molecular sciences N2 - Ionogels (IGs) based on poly(methyl methacrylate) (PMMA) and the metal-containing ionic liquids (ILs) bis-1-butyl-3-methlimidazolium tetrachloridocuprate(II), tetrachloride cobaltate(II), and tetrachlorido manganate(II) have been synthesized and their mechanical and electrical properties have been correlated with their microstructure. Unlike many previous examples, the current IGs show a decreasing stability in stress-strain experiments on increasing IL fractions. The conductivities of the current IGs are lower than those observed in similar examples in the literature. Both effects are caused by a two-phase structure with micrometer-sized IL-rich domains homogeneously dispersed an IL-deficient continuous PMMA phase. This study demonstrates that the IL-polymer miscibility and the morphology of the IGs are key parameters to control the (macroscopic) properties of IGs. KW - microstructure KW - ionogels KW - ionic liquids KW - phase separation KW - mechanical properties KW - ionic conductivity Y1 - 2016 U6 - https://doi.org/10.3390/ijms17030391 SN - 1422-0067 VL - 17 PB - MDPI CY - Basel ER - TY - JOUR A1 - Zhang, Weiyi A1 - Willa, Christoph A1 - Sun, Jian-Ke A1 - Guterman, Ryan A1 - Taubert, Andreas A1 - Yuan, Jiayin T1 - Polytriazolium poly(ionic liquid) bearing triiodide anions: Synthesis, basic properties and electrochemical behaviors JF - Polymer : the international journal for the science and technology of polymers N2 - 4-Methyl-1-vinyl-1,2,4-triazolium triiodide ionic liquid and its polymer poly(4-methyl-1-vinyl-1,2,4-triazolium) triiodide were prepared for the first time from their iodide precursors via the reaction of iodide (I-) with elemental iodine (I-2). The change from iodide to triiodide (I-3(-)) was found to introduce particular variations in the physical properties of these two compounds, including lower melting point/glass transition temperature and altered solubility. The compounds were characterized by single-crystal X-ray diffraction, elemental analysis, and their electrochemical properties examined in solution and in the solid-state. Compared with their iodide analogues, the triiodide salts exhibited lower electrical impedance and higher current in the cyclic voltammetry. We found that poly(4-methyl-1,2,4-triazolium triiodide) was proven to be a promising solid polymer electrolyte candidate. (C) 2017 Elsevier Ltd. All rights reserved. KW - Poly(ionic liquid) KW - Solid polymer electrolyte KW - Grotthuss mechanism KW - Triiodide "network" Y1 - 2017 U6 - https://doi.org/10.1016/j.polymer.2017.07.059 SN - 0032-3861 SN - 1873-2291 VL - 124 SP - 246 EP - 251 PB - Elsevier CY - Oxford ER - TY - JOUR A1 - Hentrich, Doreen A1 - Taabache, Soraya A1 - Brezesinski, Gerald A1 - Lange, Nele A1 - Unger, Wolfgang A1 - Kuebel, Christian A1 - Bertin, Annabelle A1 - Taubert, Andreas T1 - A Dendritic Amphiphile for Efficient Control of Biomimetic Calcium Phosphate Mineralization JF - Macromolecular bioscience N2 - The phase behavior of a dendritic amphiphile containing a Newkome-type dendron as the hydrophilic moiety and a cholesterol unit as the hydrophobic segment is investigated at the air-liquid interface. The amphiphile forms stable monomolecular films at the airliquid interface on different subphases. Furthermore, the mineralization of calcium phosphate beneath the monolayer at different calcium and phosphate concentrations versus mineralization time shows that at low calcium and phosphate concentrations needles form, whereas flakes and spheres dominate at higher concentrations. Energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and electron diffraction confirm the formation of calcium phosphate. High-resolution transmission electron microscopy and electron diffraction confirm the predominant formation of octacalcium phosphate and hydroxyapatite. The data also indicate that the final products form via a complex multistep reaction, including an association step, where nano-needles aggregate into larger flake-like objects. Y1 - 2017 U6 - https://doi.org/10.1002/mabi.201600524 SN - 1616-5187 SN - 1616-5195 VL - 17 SP - 2541 EP - 2548 PB - Wiley-VCH CY - Weinheim ER - TY - JOUR A1 - Hentrich, Doreen A1 - Brezesinski, Gerald A1 - Kuebel, Christian A1 - Bruns, Michael A1 - Taubert, Andreas T1 - Cholesteryl Hemisuccinate Monolayers Efficiently Control Calcium Phosphate Nucleation and Growth JF - Crystal growth & design : integrating the fields of crystal engineering and crystal growth for the synthesis and applications of new materials N2 - The article describes the phase behavior of cholesteryl hemisuccinate at the air-liquid interface and its effect on calcium phosphate (CP) mineralization. The amphiphile forms stable monolayers with phase transitions at the air-liquid interface from a gas to a tilted liquid-condensed (TLC) and finally to an untilted liquid-condensed (ULC) phase. CP mineralization beneath these monolayers leads to crumpled CP layers made from individual plates. The main crystal phase is octacalcium phosphate (OCP) along with a minor fraction of hydroxyapatite (HAP), as confirmed by X-ray photoelectron spectroscopy, energy dispersive X-ray spectroscopy, bright field transmission electron microscopy, and electron diffraction. Y1 - 2017 U6 - https://doi.org/10.1021/acs.cgd.7b00753 SN - 1528-7483 SN - 1528-7505 VL - 17 SP - 5764 EP - 5774 PB - American Chemical Society CY - Washington ER - TY - JOUR A1 - Peh, Eddie A1 - Liedel, Clemens A1 - Taubert, Andreas A1 - Tauer, Klaus T1 - Composition inversion to form calcium carbonate mixtures JF - CrystEngComm N2 - Composition inversion takes place in equimolar solid mixtures of sodium or ammonium carbonate and calcium chloride with respect to the combination of anions and cations leading to the corresponding chloride and calcite in complete conversion. The transformation takes place spontaneously under a variety of different situations, even in a powdery mixture resting under ambient conditions. Powder X-ray diffraction data and scanning electron microscopy micrographs are presented to describe the course of the reaction and to characterize the reaction products. The incomplete reaction in the interspace between two compressed tablets of pure starting materials leads to an electric potential due to the presence of uncompensated charges. Y1 - 2017 U6 - https://doi.org/10.1039/c7ce00433h SN - 1466-8033 VL - 19 SP - 3573 EP - 3583 PB - Royal Society of Chemistry CY - Cambridge ER - TY - GEN A1 - de Zea Bermudez, Veronica A1 - Leroux, Fabrice A1 - Rabu, Pierre A1 - Taubert, Andreas T1 - Hybrid nanomaterials: from the laboratory to the market T2 - Beilstein journal of nanotechnology KW - hybrid nanomaterials Y1 - 2017 U6 - https://doi.org/10.3762/bjnano.8.87 SN - 2190-4286 VL - 8 SP - 861 EP - 862 PB - Beilstein-Institut zur Förderung der Chemischen Wissenschaften CY - Frankfurt, Main ER - TY - GEN A1 - Schneider, Matthias A1 - Günter, Christina A1 - Taubert, Andreas T1 - Co-deposition of a hydrogel/calcium phosphate hybrid layer on 3D printed poly(lactic acid) scaffolds via dip coating BT - Towards automated biomaterials fabrication T2 - Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe N2 - The article describes the surface modification of 3D printed poly(lactic acid) (PLA) scaffolds with calcium phosphate (CP)/gelatin and CP/chitosan hybrid coating layers. The presence of gelatin or chitosan significantly enhances CP co-deposition and adhesion of the mineral layer on the PLA scaffolds. The hydrogel/CP coating layers are fairly thick and the mineral is a mixture of brushite, octacalcium phosphate, and hydroxyapatite. Mineral formation is uniform throughout the printed architectures and all steps (printing, hydrogel deposition, and mineralization) are in principle amenable to automatization. Overall, the process reported here therefore has a high application potential for the controlled synthesis of biomimetic coatings on polymeric biomaterials. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 1057 KW - 3D printing KW - dip-coating KW - poly(lactic acid) KW - PLA KW - calcium phosphate KW - gelatin KW - chitosan KW - hydrogel KW - calcium phosphate hybrid material KW - biomaterials Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-474427 SN - 1866-8372 IS - 1057 ER - TY - JOUR A1 - Heyne, Benjamin A1 - Arlt, Kristin A1 - Geßner, André A1 - Richter, Alexander F. A1 - Döblinger, Markus A1 - Feldmann, Jochen A1 - Taubert, Andreas A1 - Wedel, Armin T1 - Mixed Mercaptocarboxylic Acid Shells Provide Stable Dispersions of InPZnS/ZnSe/ZnS Multishell Quantum Dots in Aqueous Media JF - Nanomaterials N2 - Highly luminescent indium phosphide zinc sulfide (InPZnS) quantum dots (QDs), with zinc selenide/zinc sulfide (ZnSe/ZnS) shells, were synthesized. The QDs were modified via a post-synthetic ligand exchange reaction with 3-mercaptopropionic acid (MPA) and 11-mercaptoundecanoic acid (MUA) in different MPA:MUA ratios, making this study the first investigation into the effects of mixed ligand shells on InPZnS QDs. Moreover, this article also describes an optimized method for the correlation of the QD size vs. optical absorption of the QDs. Upon ligand exchange, the QDs can be dispersed in water. Longer ligands (MUA) provide more stable dispersions than short-chain ligands. Thicker ZnSe/ZnS shells provide a better photoluminescence quantum yield (PLQY) and higher emission stability upon ligand exchange. Both the ligand exchange and the optical properties are highly reproducible between different QD batches. Before dialysis, QDs with a ZnS shell thickness of ~4.9 monolayers (ML), stabilized with a mixed MPA:MUA (mixing ratio of 1:10), showed the highest PLQY, at ~45%. After dialysis, QDs with a ZnS shell thickness of ~4.9 ML, stabilized with a mixed MPA:MUA and a ratio of 1:10 and 1:100, showed the highest PLQYs, of ~41%. The dispersions were stable up to 44 days at ambient conditions and in the dark. After 44 days, QDs with a ZnS shell thickness of ~4.9 ML, stabilized with only MUA, showed the highest PLQY, of ~34%. KW - quantum dots KW - cadmium-free KW - Cd-free KW - InP KW - InPZnS KW - multishell KW - mercaptocarboxylic acids KW - 3-mercaptopropionic acid KW - 11-mercaptoundecanoic acid KW - phase transfer KW - ligand exchange KW - aqueous dispersion KW - QDs Y1 - 2020 U6 - https://doi.org/10.3390/nano10091858 SN - 2079-4991 VL - 10 IS - 9 PB - MDPI CY - Basel ER - TY - JOUR A1 - Tao, Lumi A1 - Liu, Yuchuan A1 - Wu, Dan A1 - Wei, Qiao-Hua A1 - Taubert, Andreas A1 - Xie, Zailai T1 - Luminescent Ionogels with Excellent Transparency, High Mechanical Strength, and High Conductivity JF - Nanomaterials N2 - The paper describes a new kind of ionogel with both good mechanical strength and high conductivity synthesized by confining the ionic liquid (IL) 1-butyl-3-methylimidazolium bis(trifluoromethane sulfonyl)imide ([Bmim][NTf₂]) within an organic–inorganic hybrid host. The organic–inorganic host network was synthesized by the reaction of methyltrimethoxysilane (MTMS), tetraethoxysilane (TEOS), and methyl methacrylate (MMA) in the presence of a coupling agent, offering the good mechanical strength and rapid shape recovery of the final products. The silane coupling agent 3-methacryloxypropyltrimethoxysilane (KH-570) plays an important role in improving the mechanical strength of the inorganic–organic hybrid, because it covalently connected the organic component MMA and the inorganic component SiO₂. Both the thermal stability and mechanical strength of the ionogel significantly increased by the addition of IL. The immobilization of [Bmim][NTf₂] within the ionogel provided the final ionogel with an ionic conductivity as high as ca. 0.04 S cm⁻¹ at 50 °C. Moreover, the hybrid ionogel can be modified with organosilica-modified carbon dots within the network to yield a transparent and flexible ionogel with strong excitation-dependent emission between 400 and 800 nm. The approach is, therefore, a blueprint for the construction of next-generation multifunctional ionogels. KW - ionic liquid KW - ionogel KW - carbon dots KW - organic–inorganic hybrid KW - luminescence KW - mechanical strength Y1 - 2020 U6 - https://doi.org/10.3390/nano10122521 SN - 2079-4991 VL - 10 IS - 12 PB - MDPI CY - Basel ER - TY - JOUR A1 - Zehbe, Kerstin A1 - Lange, Alyna A1 - Taubert, Andreas T1 - Stereolithography Provides Access to 3D Printed lonogels with High Ionic Conductivity JF - Energy Fuels N2 - New ionogels (IGs) were prepared by combination of a series of sulfonate-based ionic liquids (ILs), 1-methyl-3-(4-sulfobutyl)imidazolium para-toluenesulfonate [BmimSO(3)][pTS], 1-methyl-1-butylpiperidiniumsulfonate para-toluenesul-fonate [BmpipSO(3)] [pTS], and 1-methyl-3-(4-sulfobutyl) imidazolium methylsulfonate [BmimSO(3)H][MeSO3] with a commercial stereolithography photoreactive resin. The article describes both the fundamental properties of the ILs and the resulting IGs. The IGs obtained from the ILs and the resin show high ionic conductivity of up to ca. 0.7.10(-4) S/cm at room temperature and 3.4-10(-3) S/cm at 90 degrees C. Moreover, the IGs are thermally stable to about 200 degrees C and mechanically robust. Finally, and most importantly, the article demonstrates that the IGs can be molded three-dimensionally using stereolithography. This provides, for the first time, access to IGs with complex 3D shapes with potential application in battery or fuel cell technology. Y1 - 2019 U6 - https://doi.org/10.1021/acs.energyfuels.9b03379 SN - 0887-0624 SN - 1520-5029 VL - 33 IS - 12 SP - 12885 EP - 12893 PB - American Chemical Society CY - Washington ER - TY - JOUR A1 - Hentrich, Doreen A1 - Tauer, Klaus A1 - Espanol, Montserrat A1 - Ginebra, Maria-Pau A1 - Taubert, Andreas T1 - EDTA and NTA effectively tune the mineralization of calcium phosphate from bulk aqueous solution JF - Biomimetics N2 - This study describes the effects of nitrilotriacetic acid (NTA) and ethylenediaminotetraacetic acid (EDTA) on themineralization of calciumphosphate from bulk aqueous solution. Mineralization was performed between pH 6 and 9 and with NTA or EDTA concentrations of 0, 5, 10, and 15 mM. X-ray diffraction and infrared spectroscopy show that at low pH, mainly brushite precipitates and at higher pH, mostly hydroxyapatite forms. Both additives alter the morphology of the precipitates. Without additive, brushite precipitates as large plates. With NTA, the morphology changes to an unusual rod-like shape. With EDTA, the edges of the particles are rounded and disk-like particles form. Conductivity and pH measurements suggest that the final products form through several intermediate steps. KW - biomineralization KW - biomimetic mineralization KW - calcium phosphate KW - NTA KW - EDTA KW - precipitation KW - brushite KW - hydroxyapatite Y1 - 2017 U6 - https://doi.org/10.3390/biomimetics2040024 SN - 2313-7673 VL - 2 IS - 4 PB - MDPI CY - Basel ER - TY - JOUR A1 - Taubert, Andreas A1 - Leroux, Fabrice A1 - Rabu, Pierre A1 - de Zea Bermudez, Veronica T1 - Advanced hybrid nanomaterials JF - Beilstein journal of nanotechnology KW - colloidal chemistry KW - environmental remediation KW - hybrid nanomaterials KW - nanocomposite KW - nanofillers KW - nanomedicine KW - nanostructures KW - polymer fillers KW - pore templating KW - smart materials Y1 - 2019 U6 - https://doi.org/10.3762/bjnano.10.247 SN - 2190-4286 VL - 10 SP - 2563 EP - 2567 PB - Beilstein-Institut zur Förderung der Chemischen Wissenschaften CY - Frankfurt am Main ER - TY - JOUR A1 - Ugwuja, Chidinma G. A1 - Adelowo, Olawale O. A1 - Ogunlaja, Aemere A1 - Omorogie, Martins O. A1 - Olukanni, Olumide D. A1 - Ikhimiukor, Odion O. A1 - Iermak, Ievgeniia A1 - Kolawole, Gabriel A. A1 - Günter, Christina A1 - Taubert, Andreas A1 - Bodede, Olusola A1 - Moodley, Roshila A1 - Inada, Natalia M. A1 - Camargo, Andrea S.S. de A1 - Unuabonah, Emmanuel Iyayi T1 - Visible-Light-Mediated Photodynamic Water Disinfection @ Bimetallic-Doped Hybrid Clay Nanocomposites JF - ACS applied materials & interfaces N2 - This study reports a new class of photocatalytic hybrid clay nanocomposites prepared from low-cost sources (kaolinite clay and Carica papaya seeds) doped with Zn and Cu salts via a solvothermal process. X-ray diffraction analysis suggests that Cu-doping and Cu/Zn-doping introduce new phases into the crystalline structure of Kaolinite clay, which is linked to the reduced band gap of kaolinite from typically between 4.9 and 8.2 eV to 2.69 eV for Cu-doped and 1.5 eV for Cu/Zn hybrid clay nanocomposites (Nisar, J.; Arhammar, C.; Jamstorp, E.; Ahuja, R. Phys. Rev. B 2011, 84, 075120). In the presence of solar light irradiation, Cu- and Cu/Zn-doped nanocomposites facilitate the electron hole pair separation. This promotes the generation of singlet oxygen which in turn improves the water disinfection efficiencies of these novel nanocomposite materials. The nanocomposite materials were further characterized using high-resolution scanning electron microscopy, fluorimetry, therrnogravimetric analysis, and Raman spectroscopy. The breakthrough times of the nanocomposites for a fixed bed mode of disinfection of water contaminated with 2.32 x 10(7) cfu/mL E. coli ATCC 25922 under solar light irradiation are 25 h for Zn-doped, 30 h for Cu-doped, and 35 h for Cu/Zn-doped nanocomposites. In the presence of multidrug and multimetal resistant strains of E. coli, the breakthrough time decreases significantly. Zn-only doped nanocomposites are not photocatalytically active. In the absence of light, the nanocomposites are still effective in decontaminating water, although less efficient than under solar light irradiation. Electrostatic interaction, metal toxicity, and release of singlet oxygen (only in the Cu-doped and Cu/Zn-doped nanocomposites) are the three disinfection mechanisms by which these nanocomposites disinfect water. A regrowth study indicates the absence of any living E. coli cells in treated water even after 4 days. These data and the long hydraulic times (under gravity) exhibited by these nanocomposites during photodisinfection of water indicate an unusually high potential of these nanocomposites as efficient, affordable, and sustainable point-of-use systems for the disinfection of water in developing countries. KW - disinfection KW - nanocomposite material KW - multidrug-resistant Escherichia coli KW - water KW - reactive oxygen species Y1 - 2019 U6 - https://doi.org/10.1021/acsami.9b01212 SN - 1944-8244 SN - 1944-8252 VL - 11 IS - 28 SP - 25483 EP - 25494 PB - American Chemical Society CY - Washington, DC ER - TY - JOUR A1 - Pereira, Rui F. P. A1 - Zehbe, Kerstin A1 - Günter, Christina A1 - dos Santos, Tiago A1 - Nunes, Silvia C. A1 - Almeida Paz, Filipe A. A1 - Silva, Maria M. A1 - Granja, Pedro L. A1 - Taubert, Andreas A1 - de Zea Bermudez, Verónica T1 - Ionic liquid-assisted synthesis of mesoporous silk fibroin/silica hybrids for biomedical applications JF - ACS Omega N2 - New mesoporous silk fibroin (SF)/silica hybrids were processed via a one-pot soft and energy-efficient sol-gel chemistry and self-assembly from a silica precursor, an acidic or basic catalyst, and the ionic liquid 1-butyl-3-methylimidazolium chloride, acting as both solvent and mesoporosity-inducer. The as-prepared materials were obtained as slightly transparent-opaque, amorphous monoliths, easily transformed into powders, and stable up to ca. 300 degrees C. Structural data suggest the formation of a hexagonal mesostructure with low range order and apparent surface areas, pore volumes, and pore radii of 205-263 m(2) g(-1), 0.16-0.19 cm(3) g(-1), and 1.2-1.6 nm, respectively. In all samples, the dominating conformation of the SF chains is the beta-sheet. Cytotoxicity/bioactivity resazurin assays and fluorescence microscopy demonstrate the high viability of MC3T3 pre-osteoblasts to indirect (>= 99 +/- 9%) and direct (78 +/- 2 to 99 +/- 13%) contact with the SF/silica materials. Considering their properties and further improvements, these systems are promising candidates to be explored in bone tissue engineering. They also offer excellent prospects as electrolytes for solid-state electrochemical devices, in particular for fuel cells. Y1 - 2018 U6 - https://doi.org/10.1021/acsomega.8b02051 SN - 2470-1343 VL - 3 IS - 9 SP - 10811 EP - 10822 PB - American Chemical Society CY - Washington ER - TY - JOUR A1 - Uchida, Ryusuke A1 - Binet, Silvia A1 - Arora, Neha A1 - Jacopin, Gwenole A1 - Alotaibi, Mohammad Hayal A1 - Taubert, Andreas A1 - Zakeeruddin, Shaik Mohammed A1 - Dar, M. Ibrahim A1 - Graetzel, Michael T1 - Insights about the Absence of Rb Cation from the 3D Perovskite Lattice BT - Effect on the Structural, Morphological, and Photophysical Properties and Photovoltaic Performance JF - Small N2 - Efficiencies >20% are obtained from the perovskite solar cells (PSCs) employing Cs+ and Rb+ based perovskite compositions; therefore, it is important to understand the effect of these inorganic cations specifically Rb+ on the properties of perovskite structures. Here the influence of Cs+ and Rb+ is elucidated on the structural, morphological, and photophysical properties of perovskite structures and the photovoltaic performances of resulting PSCs. Structural, photoluminescence (PL), and external quantum efficiency studies establish the incorporation of Cs+ (x < 10%) but amply rule out the possibility of Rb-incorporation into the MAPbI(3) (MA = CH3NH3+) lattice. Moreover, morphological studies and time-resolved PL show that both Cs+ and Rb+ detrimentally affect the surface coverage of MAPbI(3) layers and charge-carrier dynamics, respectively, by influencing nucleation density and by inducing nonradiative recombination. In addition, differential scanning calorimetry shows that the transition from orthorhombic to tetragonal phase occurring around 160 K requires more thermal energy for the Cs-containing MAPbI(3) systems compared to the pristine MAPbI(3). Investigation including mixed halide (I/Br) and mixed cation A-cation based compositions further confirms the absence of Rb+ from the 3D-perovskite lattice. The fundamental insights gained through this work will be of great significance to further understand highly promising perovskite compositions. KW - cation miscibility KW - cesium cation KW - perovskite solar cells KW - rubidium cation KW - X-ray diffraction Y1 - 2018 U6 - https://doi.org/10.1002/smll.201802033 SN - 1613-6810 SN - 1613-6829 VL - 14 IS - 36 PB - Wiley-VCH CY - Weinheim ER - TY - JOUR A1 - Mai, Tobias A1 - Wolski, Karol A1 - Puciul-Malinowska, Agnieszka A1 - Kopyshev, Alexey A1 - Gräf, Ralph A1 - Bruns, Michael A1 - Zapotoczny, Szczepan A1 - Taubert, Andreas T1 - Anionic polymer brushes for biomimetic calcium phosphate mineralization BT - A surface with application potential in biomaterials JF - Polymers N2 - This article describes the synthesis of anionic polymer brushes and their mineralization with calcium phosphate. The brushes are based on poly(3-sulfopropyl methacrylate potassium salt) providing a highly charged polymer brush surface. Homogeneous brushes with reproducible thicknesses are obtained via surface-initiated atom transfer radical polymerization. Mineralization with doubly concentrated simulated body fluid yields polymer/inorganic hybrid films containing AB-Type carbonated hydroxyapatite (CHAP), a material resembling the inorganic component of bone. Moreover, growth experiments using Dictyostelium discoideum amoebae demonstrate that the mineral-free and the mineral-containing polymer brushes have a good biocompatibility suggesting their use as biocompatible surfaces in implantology or related fields. KW - polymer brushes KW - calcium phosphate KW - hydroxyapatite KW - carbonated apatite KW - bone mimic KW - biocompatibility KW - Dictyostelium discoideum Y1 - 2018 U6 - https://doi.org/10.3390/polym10101165 SN - 2073-4360 VL - 10 IS - 10 PB - MDPI CY - Basel ER - TY - JOUR A1 - Kim, Yohan A1 - Heyne, Benjamin A1 - Abouserie, Ahed A1 - Pries, Christopher A1 - Ippen, Christian A1 - Günter, Christina A1 - Taubert, Andreas A1 - Wedel, Armin T1 - CuS nanoplates from ionic liquid precursors-Application in organic photovoltaic cells JF - The journal of chemical physics : bridges a gap between journals of physics and journals of chemistr N2 - Hexagonal p-type semiconductor CuS nanoplates were synthesized via a hot injection method from bis(trimethylsilyl) sulfide and the ionic liquid precursor bis(N-dodecylpyridinium) tetrachloridocuprate( II). The particles have a broad size distribution with diameters between 30 and 680 nm and well-developed crystal habits. The nanoplates were successfully incorporated into organic photovoltaic (OPV) cells as hole conduction materials. The power conversion efficiency of OPV cells fabricated with the nanoplates is 16% higher than that of a control device fabricated without the nanoplates. (C) 2018 Author(s). Y1 - 2018 U6 - https://doi.org/10.1063/1.4991622 SN - 0021-9606 SN - 1089-7690 VL - 148 IS - 19 PB - American Institute of Physics CY - Melville ER -