@misc{AstFischerMuelleretal.2013, author = {Ast, Sandra and Fischer, Tobias and M{\"u}ller, Holger and Mickler, Wulfhard and Schwichtenberg, Mathias and Rurack, Knut and Holdt, Hans-J{\"u}rgen}, title = {Integration of the 1,2,3-Triazole "Click" Motif as a potent signalling element in metal ion responsive fluorescent probes}, series = {Chemistry - a European journal}, volume = {19}, journal = {Chemistry - a European journal}, number = {9}, publisher = {Wiley-VCH}, address = {Weinheim}, issn = {0947-6539}, doi = {10.1002/chem.201201575}, pages = {2990 -- 3005}, year = {2013}, abstract = {In a systematic approach we synthesized a new series of fluorescent probes incorporating donoracceptor (D-A) substituted 1,2,3-triazoles as conjugative -linkers between the alkali metal ion receptor N-phenylaza-[18]crown-6 and different fluorophoric groups with different electron-acceptor properties (4-naphthalimide, meso-phenyl-BODIPY and 9-anthracene) and investigated their performance in organic and aqueous environments (physiological conditions). In the charge-transfer (CT) type probes 1, 2 and 7, the fluorescence is almost completely quenched by intramolecular CT (ICT) processes involving charge-separated states. In the presence of Na+ and K+ ICT is interrupted, which resulted in a lighting-up of the fluorescence in acetonitrile. Among the investigated fluoroionophores, compound 7, which contains a 9-anthracenyl moiety as the electron-accepting fluorophore, is the only probe which retains light-up features in water and works as a highly K+/Na+-selective probe under simulated physiological conditions. Virtually decoupled BODIPY-based 6 and photoinduced electron transfer (PET) type probes 35, where the 10-substituted anthracen-9-yl fluorophores are connected to the 1,2,3-triazole through a methylene spacer, show strong ion-induced fluorescence enhancement in acetonitrile, but not under physiological conditions. Electrochemical studies and theoretical calculations were used to assess and support the underlying mechanisms for the new ICT and PET 1,2,3-triazole fluoroionophores.}, language = {en} } @article{Mickler1996, author = {Mickler, Wulfhard}, title = {Separation of metals by liquid-liquid-extraction with ß-diketones and 4-acyl-5-pyrazolones from different complex-forming medias}, year = {1996}, language = {en} } @article{UhlemannKuemmelSchroederetal.1996, author = {Uhlemann, Erhard and K{\"u}mmel, Rolf and Schr{\"o}der, Martina and Mickler, Wulfhard}, title = {Selektiver Ionentransport durch fl{\"u}ssige Membranen}, year = {1996}, language = {de} } @article{UhlemannProchaskaLozynskietal.1996, author = {Uhlemann, Erhard and Prochaska, Krystyna and Lozynski, M. and Szymanowski, Jan and Mickler, Wulfhard}, title = {Interfacial activity and semiempirical PM3 calculations of 2-Ethylhexanoylbenzoyl Methane}, year = {1996}, language = {en} } @article{UhlemannMicklerReichetal.1996, author = {Uhlemann, Erhard and Mickler, Wulfhard and Reich, Annett and Bart, Hans-Joerg}, title = {Liquid membrane permeation of zinc, cadmium and nickel with 4-acyl-5-pyrazolones and ß-diketones}, year = {1996}, language = {en} } @article{FriedrichHefeleMickleretal.1998, author = {Friedrich, Alwin and Hefele, Heike and Mickler, Wulfhard and M{\"o}nner, Anke and Uhlemann, Erhard and Scholz, F.}, title = {Voltammetric and potentiometric studies on the stability of vanadium(IV) complexes : a comparision of sulution phase voltammetry with the voltammetry of the microcrystalline solid compounds}, year = {1998}, language = {en} } @article{SchildeMicklerUhlemann1997, author = {Schilde, Uwe and Mickler, Wulfhard and Uhlemann, Erhard}, title = {Crystal structure of bis(1-phenyl-5-cyclohexyl-pentane-1,3-dionato-copper(II)}, issn = {0044-2968}, year = {1997}, language = {en} } @article{UhlemannProchaskaCierpiszewskietal.1995, author = {Uhlemann, Erhard and Prochaska, Krystyna and Cierpiszewski, Ryszard and Szymanowski, Jan and Mickler, Wulfhard}, title = {Rate of copper extraction and interfacial activity of model ß-diketones}, year = {1995}, language = {en} } @article{MicklerMoennerHefeleetal.1997, author = {Mickler, Wulfhard and M{\"o}nner, Anke and Hefele, Heike and Ludwig, Eberhard and Uhlemann, Erhard}, title = {Voltammetric studies of non-oxo Vanadium (IV)-chelates}, year = {1997}, language = {en} } @article{Mickler1993, author = {Mickler, Wulfhard}, title = {Liquid-liquid-extraction of copper from ammoniacal solution with 4-acylpyrazol-5-ones and ß-diketones}, isbn = {1-85861-042-7}, year = {1993}, language = {en} }