TY  - JOUR
A1  - Nießner, Reinhard
A1  - Broekaert, J.
A1  - Einax, J. W.
A1  - Scheller, Frieder W.
A1  - Stöcklein, Walter F. M.
T1  - Trendbericht analytische Biochemie 2000/2001
Y1  - 2002
ER  - 
TY  - JOUR
A1  - Bauer, Christian G.
A1  - Eremenko, A. V.
A1  - Ehrentreich-Förster, Eva
A1  - Bier, Frank Fabian
A1  - Makower, Alexander
A1  - Halsall, H. B.
A1  - Heineman, W. R.
A1  - Scheller, Frieder W.
T1  - Zeptomole-detecting biosensor for alkaline phosphatase in an electroche mical immunoassay for 2,4- dichlorophenoacetic acid
Y1  - 1996
ER  - 
TY  - JOUR
A1  - Freaney, R.
A1  - MacShane, A.
A1  - Keaveny, T. V.
A1  - MacKenna, M.
A1  - Rabenstein, K.
A1  - Scheller, Frieder W.
A1  - Pfeiffer, Dorothea
A1  - Urban, G.
A1  - Moser, I.
A1  - Jobst, G.
A1  - Manz, A.
A1  - Verpoorte, E.
A1  - Widmer, M. W.
A1  - Diamond, D.
A1  - Dempsey, E.
A1  - deViteri, F. J. S.
A1  - Smyth, M.
T1  - Novel instrumentation for real-time monitoring using miniaturized flow systems with integrated biosensors
Y1  - 1997
ER  - 
TY  - JOUR
A1  - Welzel, H.-P.
A1  - Kossmehl, G.
A1  - Engelmann, G.
A1  - Neumann, B.
A1  - Wollenberger, Ursula
A1  - Scheller, Frieder W.
A1  - Schröder, W.
T1  - Reactive groups on polymer covered electrodes, 4. Lactate-oxidase-biosensor based on electrodes modifies by polyphiophene
Y1  - 1996
ER  - 
TY  - THES
A1  - Benkert, Alexander
A1  - Scheller, Frieder W.
A1  - Schössler, W.
A1  - Micheel, Burkhard
A1  - Warsinke, Axel
T1  - Size exclusion redox-labeled immunoassay (SERI) : a new format for homogeneous amperometric creatinine determination
Y1  - 2000
ER  - 
TY  - JOUR
A1  - Stöcklein, Walter F. M.
A1  - Behrsing, Olaf
A1  - Scharte, Gudrun
A1  - Micheel, Burkhard
A1  - Benkert, Alexander
A1  - Schössler, W.
A1  - Warsinke, Axel
A1  - Scheller, Frieder W.
T1  - Enzyme kinetic assays with surface plasmon resonance (BIAcore) based on competition between enzyme and creatinine antibody
Y1  - 2000
ER  - 
TY  - JOUR
A1  - Gajovic, Nenad
A1  - Habermüller, K.
A1  - Warsinke, Axel
A1  - Schuhmann, W.
A1  - Scheller, Frieder W.
T1  - A pyruvate oxidase electrode based on an electrochemically deposited redox polymer
Y1  - 1999
ER  - 
TY  - JOUR
A1  - Jin, Wen
A1  - Wollenberger, Ursula
A1  - Kärgel, E.
A1  - Schunck, W.-H.
A1  - Scheller, Frieder W.
T1  - Electrochemical investigation of the intermolecular electron transfer between cytochrome c and NADPH-cytochrome P450-reductase
Y1  - 1997
ER  - 
TY  - JOUR
A1  - Neumann, Bettina
A1  - Götz, Robert
A1  - Wrzolek, Pierre
A1  - Scheller, Frieder W.
A1  - Weidinger, Inez M.
A1  - Schwalbe, Matthias
A1  - Wollenberger, Ulla
T1  - Enhancement of the Electrocatalytic Activity of Thienyl-Substituted Iron Porphyrin Electropolymers by a Hangman Effect
JF  - ChemCatChem : heterogeneous & homogeneous & bio- & nano-catalysis ; a journal of ChemPubSoc Europe
N2  - The thiophene-modified iron porphyrin FeT3ThP and the respective iron Hangman porphyrin FeH3ThP, incorporating a carboxylic acid hanging group in the second coordination sphere of the iron center, were electropolymerized on glassy carbon electrodes using 3,4-ethylenedioxythiophene (EDOT) as co-monomer. Scanning electron microscopy images and Resonance Raman spectra demonstrated incorporation of the porphyrin monomers into a fibrous polymer network. Porphyrin/polyEDOT films catalyzed the reduction of molecular oxygen in a four-electron reaction to water with onset potentials as high as +0.14V vs. Ag/AgCl in an aqueous solution of pH7. Further, FeT3ThP/polyEDOT films showed electrocatalytic activity towards reduction of hydrogen peroxide at highly positive potentials, which was significantly enhanced by introduction of the carboxylic acid hanging group in FeH3ThP. The second coordination sphere residue promotes formation of a highly oxidizing reaction intermediate, presumably via advantageous proton supply, as observed for peroxidases and catalases making FeH3ThP/polyEDOT films efficient mimics of heme enzymes.
KW  - activation of oxygen species
KW  - electro-polymerization
KW  - Hangman porphyrin
KW  - heterogeneous catalysis
KW  - immobilization
Y1  - 2018
U6  - https://doi.org/10.1002/cctc.201800934
SN  - 1867-3880
SN  - 1867-3899
VL  - 10
IS  - 19
SP  - 4353
EP  - 4361
PB  - Wiley-VCH
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Ozcelikay, Goksu
A1  - Kurbanoglu, Sevinc
A1  - Zhang, Xiaorong
A1  - Söz, Çağla Kosak
A1  - Wollenberger, Ulla
A1  - Ozkan, Sibel A.
A1  - Yarman, Aysu
A1  - Scheller, Frieder W.
T1  - Electrochemical MIP Sensor for Butyrylcholinesterase
JF  - Polymers
N2  - Molecularly imprinted polymers (MIPs) mimic the binding sites of antibodies by substituting the amino acid-scaffold of proteins by synthetic polymers. In this work, the first MIP for the recognition of the diagnostically relevant enzyme butyrylcholinesterase (BuChE) is presented. The MIP was prepared using electropolymerization of the functional monomer o-phenylenediamine and was deposited as a thin film on a glassy carbon electrode by oxidative potentiodynamic polymerization. Rebinding and removal of the template were detected by cyclic voltammetry using ferricyanide as a redox marker. Furthermore, the enzymatic activity of BuChE rebound to the MIP was measured via the anodic oxidation of thiocholine, the reaction product of butyrylthiocholine. The response was linear between 50 pM and 2 nM concentrations of BuChE with a detection limit of 14.7 pM. In addition to the high sensitivity for BuChE, the sensor responded towards pseudo-irreversible inhibitors in the lower mM range.
KW  - molecularly imprinted polymers
KW  - biomimetic sensors
KW  - butyrylcholinesterase
KW  - o-phenylenediamine
KW  - rivastigmine
Y1  - 2019
U6  - https://doi.org/10.3390/polym11121970
SN  - 2073-4360
VL  - 11
IS  - 12
PB  - MDPI
CY  - Basel
ER  -