TY - JOUR A1 - Uhlemann, Erhard A1 - Schilde, Uwe A1 - Mickler, Wulfhard T1 - Crystal structure of bis(1-phenyldecane-1,3-dionato)-copper(II), Cu(C16H21O2)2 Y1 - 1996 SN - 0044-2968 ER - TY - JOUR A1 - Uhlemann, Erhard A1 - Prochaska, Krystyna A1 - Lozynski, M. A1 - Szymanowski, Jan A1 - Mickler, Wulfhard T1 - Interfacial activity and semiempirical PM3 calculations of 2-Ethylhexanoylbenzoyl Methane Y1 - 1996 ER - TY - JOUR A1 - Uhlemann, Erhard A1 - Prochaska, Krystyna A1 - Cierpiszewski, Ryszard A1 - Szymanowski, Jan A1 - Mickler, Wulfhard T1 - Rate of copper extraction and interfacial activity of model ß-diketones Y1 - 1995 ER - TY - JOUR A1 - Uhlemann, Erhard A1 - Mickler, Wulfhard A1 - Reich, Annett A1 - Bart, Hans-Joerg T1 - Liquid membrane permeation of zinc, cadmium and nickel with 4-acyl-5-pyrazolones and ß-diketones Y1 - 1996 ER - TY - JOUR A1 - Uhlemann, Erhard A1 - Mickler, Wulfhard A1 - Reich, Annett T1 - Extraction of zinc with long-chain ß-Diketones and 4-Acyl-5-Pyrazolones Y1 - 1995 ER - TY - JOUR A1 - Uhlemann, Erhard A1 - Labuda, Jan A1 - Vanickova, M. A1 - Mickler, Wulfhard T1 - Applicability of chemically modified electrodes for the determination of copper species in natural water Y1 - 1994 ER - TY - JOUR A1 - Uhlemann, Erhard A1 - Kümmel, Rolf A1 - Schröder, Martina A1 - Mickler, Wulfhard T1 - Selektiver Ionentransport durch flüssige Membranen Y1 - 1996 ER - TY - JOUR A1 - Uhlemann, Erhard A1 - Friedrich, Alwin A1 - Hinsche, Gerald A1 - Mickler, Wulfhard A1 - Schilde, Uwe T1 - Komplexbildung und Metallextraktion mit heterocyclischen ß-Dicarbonylverbindungen im Vergleich : Struktur von 3-Phenyl-4-benzoyl-isoxazol-5-on Y1 - 1995 ER - TY - JOUR A1 - Uhlemann, Erhard A1 - Banße, Wolfgang A1 - Ludwig, Eberhard A1 - Mickler, Wulfhard A1 - Hahn, Ekkehardt A1 - Lügger, Thomas A1 - Lehmann, Andreas T1 - Mangan(IV)-Komplexe mit dreizähnigen diaciden Liganden : Kristallstruktur von Acetylacetonato- salicylaldehyd-benzoylhydrazonato(2-methanol-mangan(III) Y1 - 1995 ER - TY - JOUR A1 - Träger, Juliane A1 - Klamroth, Tillmann A1 - Kelling, Alexandra A1 - Lubahn, Susanne A1 - Cleve, Ernst A1 - Mickler, Wulfhard A1 - Heydenreich, Matthias A1 - Müller, Holger A1 - Holdt, Hans-Jürgen T1 - Complexation of Palladium(II) with unsaturated Dithioethers a systematic development of highly selective ligands for solvent extraction JF - European journal of inorganic chemistry : a journal of ChemPubSoc Europe N2 - There is a demand for new and robust PdII extractants due to growing recycling rates. Chelating dithioethers are promising substances for solvent extraction as they form stable square-planar complexes with PdII. We have modified unsaturated dithioethers, which are known to coordinate PdII, and adapted them to the requirements of industrial practice. The ligands are analogues of 1,2-dithioethene with varying electron-withdrawing backbones and polar end-groups. The crystal structures of several ligands and their palladium complexes were determined as well as their electro- and photochemical properties, complex stability and behaviour in solution. Solvent extraction experiments showed the superiority of some of our ligands over conventionally used extractants in terms of their very fast reaction rates. With highly selective 1,2-bis(2-methoxyethylthio)benzene (4) it is possible to extract PdII from a highly acidic medium in the presence of other base and palladium-group metals. KW - Renewable resources KW - Palladium KW - Chelates KW - Ligand design KW - S li-gands Y1 - 2012 U6 - https://doi.org/10.1002/ejic.201101406 SN - 1434-1948 IS - 14 SP - 2341 EP - 2352 PB - Wiley-VCH CY - Weinheim ER - TY - JOUR A1 - Schwarze, Thomas A1 - Mueller, Holger A1 - Dosche, Carsten A1 - Klamroth, Tillmann A1 - Mickler, Wulfhard A1 - Kelling, Alexandra T1 - Luminescence detection of open-shell transition-metal ions by photoinduced electron transfer controlled by internal charge transfer of a receptor Y1 - 2007 UR - http://onlinelibrary.wiley.com/doi/10.1002/ange.200603992/pdf U6 - https://doi.org/10.1002/anie.200603992 ER - TY - JOUR A1 - Schwarze, Thomas A1 - Mickler, Wulfhard A1 - Dosche, Carsten A1 - Flehr, Roman A1 - Klamroth, Tillmann A1 - Löhmannsröben, Hans-Gerd A1 - Saalfrank, Peter A1 - Holdt, Hans-Jürgen T1 - Systematic investigation of photoinduced electron transfer controlled by internal charge transfer and its consequences for selective PdCl2 coordination N2 - Fluoroionophores of fluorophore-spacer-receptor format were prepared for detection of PdCl2 by fluorescence enhancement. The fluorophore probes 1-13 consist of a fluorophore group, in alkyl spacer and a dithiomaleonitrile PdCl2 receptor. First, varying the length of the alkylene spacer (compounds 1-3) revealed, dominant through-space pathway for oxidative photoinduced electron transfer (PET) in CH2-bridged dithiomaleonitrile fluoroionophores. Second. fluorescent probes 4-9 containing two anthracene or pyrene fragments connected through CH2 bridges to the dithiomaleonitrile unit were synthesized. Modulation of the oxidation potential (E-Ox) through electron-withdrawing or -donating groups on the anthracene moiety regulates file thermodynamic driving force for oxidative PET (Delta G(PET)) in bis(anthrylmethylthio)maleonitriles and therefore the fluorescence quantum yields (Phi(f)), too. The new concept was confirmed and transferred to pyrenyl ligands, and fluorescence enhancements (FE) greater than 3.2 in the presence of PdCl2 were achieved by 7 and 8 (FE=5.4 and 5.2). Finally, for comparison, monofluorophore ligands 10-13 were synthesized. Y1 - 2010 UR - http://onlinelibrary.wiley.com/doi/10.1002/chem.200902281/pdf U6 - https://doi.org/10.1002/chem.200902281 SN - 0947-6539 ER - TY - JOUR A1 - Schwarze, Thomas A1 - Mickler, Wulfhard A1 - Dosche, Carsten A1 - Flehr, Roman A1 - Klamroth, Tillmann A1 - Löhmannsröben, Hans-Gerd A1 - Saalfrank, Peter A1 - Holdt, Hans-Jürgen T1 - Systematic investigation of photoinduced electron transfer controlled by internal charge transfer and its consequences for selective PdCl2 coordination N2 - Fluoroionophores of fluorophore-spacer-receptor format were prepared for detection of PdCl2 by fluorescence enhancement. The fluorescent probes 1-13 consist of a fluorophore group, an alkyl spacer and a dithiomaleonitrile PdCl2 receptor. First, varying the length of the alkylene spacer (compounds 1-3) revealed a dominant through-space pathway for oxidative photoinduced electron transfer (PET) in CH2-bridged dithiomaleonitrile fluoroionophores. Second, fluorescent probes 4-9 containing two anthracene or pyrene fragments connected through CH2 bridges to the dithiomaleonitrile unit were synthesized. Modulation of the oxidation potential (EOx) through electron-withdrawing or -donating groups on the anthracene moiety regulates the thermodynamic driving force for oxidative PET (GPET) in bis(anthrylmethylthio)maleonitriles and therefore the fluorescence quantum yields (f), too. The new concept was confirmed and transferred to pyrenyl ligands, and fluorescence enhancements (FE) greater than 3.2 in the presence of PdCl2 were achieved by 7 and 8 (FE=5.4 and 5.2). Finally, for comparison, monofluorophore ligands 10-13 were synthesized. Y1 - 2010 UR - http://www3.interscience.wiley.com/journal/26293/home SN - 0947-6539 ER - TY - JOUR A1 - Schröder, Martina A1 - Kümmel, Rolf A1 - Mickler, Wulfhard A1 - Uhlemann, Erhard T1 - Zur Abtrennung von Kupfer aus ammoniakalischer Lösung durch Flüssig-Flüssig-Extraktion und Flüssigmembranpermeation mit 1-Phenyl-3-methyl-4-stearoylpyrazol-5-on Y1 - 1991 ER - TY - JOUR A1 - Schilde, Uwe A1 - Mickler, Wulfhard A1 - Uhlemann, Erhard T1 - Crystal structure of bis(1-phenyl-5-cyclohexyl-pentane-1,3-dionato-copper(II) Y1 - 1997 SN - 0044-2968 ER - TY - JOUR A1 - Mickler, Wulfhard A1 - Uhlemann, Erhard A1 - Herzschuh, R. T1 - Nebenprodukte bei klassischen ß-Diketon-Synthesen Y1 - 1992 ER - TY - BOOK A1 - Mickler, Wulfhard A1 - Uhlemann, Erhard T1 - Studie zur Erstellung einer Stoffbilanz im Rahmen der projektbegleitenden Technikfolgenabschätzung zum MUNR-Projekt "Photovoltaik" der GFS in Frankfurt/Oder : Abschlußbericht zum Werkvertrag Y1 - 1996 PB - Univ. CY - Potsdam ER - TY - JOUR A1 - Mickler, Wulfhard A1 - Uhlemann, Erhard T1 - Liquid-Liquid-Extraktion of copper from ammoniacal solutions with ß-diketones Y1 - 1992 ER - TY - JOUR A1 - Mickler, Wulfhard A1 - Uhlemann, Erhard T1 - Liquid-Liquid-Extraction of copper with 4-Acylpyrazol-5-ones Y1 - 1994 ER - TY - JOUR A1 - Mickler, Wulfhard A1 - Uhlemann, Erhard T1 - Liquid-Liquid-Extraction of copper from ammoniacal solution with cyclohexyl substituted ß-diketones Y1 - 1993 ER -