TY  - JOUR
A1  - Mondal, Suvendu Sekhar
A1  - Mueller, Holger
A1  - Junginger, Matthias
A1  - Kelling, Alexandra
A1  - Schilde, Uwe
A1  - Strehmel, Veronika
A1  - Holdt, Hans-Jürgen
T1  - Imidazolium 2-substituted 4,5-dicyanoimidazolate ionic liquids: synthesis, crystal structures and structure-thermal property relationships
JF  - Chemistry - a European journal
N2  - Thirty six novel ionic liquids (ILs) with 1-butyl-3-methylimidazolium and 3-methyl-1-octylimidazolium cations paired with 2-substitited 4,5-dicyanoimidazolate anions (substituent at C2=chloro, bromo, methoxy, vinyl, amino, methyl, ethyl, propyl, isopropyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl and phenyl) have been synthesized and characterized by using differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and single-crystal X-ray crystallography. The effects of cation and anion type and structure on the thermal properties of the resulting ionic liquids, including several room temperature ionic liquids (RTILs) are examined and discussed. ILs exhibited large liquid and crystallization ranges and formed glasses on cooling with glass transition temperatures in the range of -22 to -68 degrees C. The effects of alkyl substituents of the imidazolate anion reflected the crystallization, melting points and thermal decomposition of the ILs. The Coulombic packing force, van der Waals forces and size of the anions can be considered for altering the thermal transitions. Three crystal structures of the ILs were determined and the effects of changes to the cations and anions on the packing of the structure were investigated.
KW  - crystal structures
KW  - imidazole
KW  - ion exchange
KW  - ionic liquids
KW  - pi-pi stacking
Y1  - 2014
U6  - https://doi.org/10.1002/chem.201304934
SN  - 0947-6539
SN  - 1521-3765
VL  - 20
IS  - 26
SP  - 8170
EP  - 8181
PB  - Wiley-VCH
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Debatin, Franziska
A1  - Thomas, Arne
A1  - Kelling, Alexandra
A1  - Hedin, Niklas
A1  - Bacsik, Zoltan
A1  - Senkovska, Irena
A1  - Kaskel, Stefan
A1  - Junginger, Matthias
A1  - Müller, Holger
A1  - Schilde, Uwe
A1  - Jäger, Christian
A1  - Friedrich, Alwin
A1  - Holdt, Hans-Jürgen
T1  - In situ synthesis of an imidazolate-4-amide-5-imidate ligand and formation of a microporous zinc-organic framework with H2-and CO2-storage ability
N2  - Narrow channels with polar walls are the structural and functional features responsible for the high capacity of a zinc-organic framework based on an imidazolate-amide-imidate ligand for the uptake of H2 and CO2 (see structure: orange Zn, blue N, red O, dark gray C, light gray H). The rigid and stable chelating ligand was synthesized in situ by partial hydrolysis of a dicyanoimidazole compound.
Y1  - 2010
UR  - http://www3.interscience.wiley.com/cgi-bin/jhome/26737/
U6  - https://doi.org/10.1002/anie.200906188
SN  - 1433-7851
ER  - 
TY  - JOUR
A1  - Schweizer, S.
A1  - Schuster, T.
A1  - Junginger, Matthias
A1  - Siekmeyer, Gerd
A1  - Taubert, Andreas
T1  - Surface modification of ickel/Titanium Alloy and Titanium Surfaces via a Polyelectrolyte Multilayer/Calcium Phosphate Hybrid Coating
N2  - The report shows that simple LbL deposition of positively charged chitosan and negatively charged heparin can be used to efficiently modify the native surface of both NiTi and Ti without any previous treatments. Moreover, mineralization of the polymer multilayers with calcium phosphate leads to surfaces with low contact angles around 70 and 20 degrees for NiTi and Ti, respectively. This suggests that a polymer multilayer/calcium phosphate hybrid coating could be useful for making NiTi or Ti implants that are at the same time antibacterial (via the chitosan), suppress blood clot formation (via the heparin), and favor fast endothelialization (via the improved surface hydrophilicity compared to the respective neat material).
Y1  - 2010
UR  - http://onlinelibrary.wiley.com/doi/10.1002/mame.200900347/pdf
U6  - https://doi.org/10.1002/mame.200900347
SN  - 1438-7492
ER  -