8 results match your criteria: "Technical University Wildau[Affiliation]"
Bioelectrochemistry
December 2024
Biosystems Technology, Institute of Life Sciences and Biomedical Technologies, Technical University Wildau, Germany. Electronic address:
The pattern of the activity of proteases is related to distinct physiological states of living organisms. Often activity changes of a certain protease can be assigned to a specific disease. Hence, they are useful biomarkers and a simple and fast determination method of their activity could be a valuable tool for the efficient monitoring of numerous diseases.
View Article and Find Full Text PDFBioelectrochemistry
June 2024
Biosystems Technology, Institute of Life Sciences and Biomedical Technologies, Technical University Wildau, Hochschulring 1, 15745 Wildau, Germany. Electronic address:
In the field of neuroscience as well as in the clinical setting, the neurotransmitter dopamine (DA) is an analyte which is important for research as well as medical purposes. There are plenty of methods available to measure dopamine quantitatively, with voltammetric ones such as differential pulse voltammetry (DPV) being among the most convenient and simple ones. However, dopamine often occurs, either naturally or because of the requirements of involved enzymatic systems, alongside substances that can influence the signal it produces upon electrochemical conversion.
View Article and Find Full Text PDFChem Commun (Camb)
May 2020
Biosystems Technology, Institute of Life Sciences and Biomedical Technologies, Technical University Wildau, Hochschulring 1, D-15745 Wildau, Germany.
A light-controlled multiplexing platform has been developed on the basis of a quantum dot-sensitized inverse opal TiO electrode with integrated biocatalytic reactions. Spatially resolved illumination enables multiplexed sensing and imaging of enzymatic oxidation reactions at relatively negative applied potentials.
View Article and Find Full Text PDFNanoscale
August 2019
Biosystems Technology, Institute of Life Sciences and Biomedical Technologies, Technical University Wildau, 15745 Wildau, Hochschulring 1, Germany.
In recent years the use of photoelectrodes based on conductive metal oxides has become very popular in the field of photovoltaics. The application of 3D electrodes holds great promise since they can integrate large amounts of photoactive proteins. In this study photosystem I (PSI) from the thermophilic cyanobacterium Thermosynechococcus elongatus was immobilized on 3D ITO electrodes and electrically wired via the redox protein cytochrome c (cyt c).
View Article and Find Full Text PDFACS Appl Mater Interfaces
January 2018
Biosystems Technology, Institute for Applied Life Sciences, Technical University Wildau, Hochschulring 1, D-15745 Wildau, Germany.
Inspired by natural photosynthesis, coupling of artificial light-sensitive entities with biocatalysts in a biohybrid format can result in advanced photobioelectronic systems. Herein, we report on the integration of sulfonated polyanilines (PMSA1) and PQQ-dependent glucose dehydrogenase (PQQ-GDH) into inverse opal TiO (IO-TiO) electrodes. While PMSA1 introduces sensitivity for visible light into the biohybrid architecture and ensures the efficient wiring between the IO-TiO electrode and the biocatalytic entity, PQQ-GDH provides the catalytic activity for the glucose oxidation and therefore feeds the light-driven reaction with electrons for an enhanced light-to-current conversion.
View Article and Find Full Text PDFNanoscale
February 2017
Biosystems Technology, Institute for Applied Life Sciences, Technical University Wildau, Hochschulring 1, D-15745 Wildau, Germany.
The combination of the biocatalytic features of enzymes with the unique physical properties of nanoparticles in a biohybrid system provides a promising approach for the development of advanced bioelectrocatalytic devices. This study describes the construction of photoelectrochemical signal chains based on CdSe/ZnS quantum dot (QD) modified gold electrodes as light switchable elements, and low molecular weight redox molecules for the combination with different biocatalysts. Photoelectrochemical and photoluminescence experiments verify that electron transfer can be achieved between the redox molecules hexacyanoferrate and ferrocene, and the QDs under illumination.
View Article and Find Full Text PDFSmall
November 2015
Fachbereich Physik, Philipps-Universität Marburg, Renthof 5, D-35032, Marburg, Germany.
Anal Chem
October 2011
Biosystems Technology, Technical University Wildau, 15745 Wildau, Germany.
This study reports on the oxygen sensitivity of quantum dot electrodes modified with CdSe/ZnS nanocrystals. The photocurrent behavior is analyzed for dependence on pH and applied potential by potentiostatic and potentiodynamic measurements. On the basis of the influence of the oxygen content in solution on the photocurrent generation, the enzymatic activity of glucose oxidase is evaluated in solution.
View Article and Find Full Text PDF