Electrochemistry Fluorescence Microscopy
Electrochemistry Fluorescence Microscopy - Related Videos
12:15
Single Liposome Measurements for the Study of Proton-Pumping Membrane Enzymes Using Electrochemistry and Fluorescent Microscopy
0 Views •
Cited by 4 •
2019
Here, we present a protocol to study the molecular mechanism of proton translocation across lipid membranes of single liposomes, using cytochrome bo3 as an example. Combining electrochemistry and fluorescence microscopy, pH changes in the lumen of single vesicles, containing single or multiple enzyme, can be detected and analyzed individually.
09:22
Introduction to Fluorescence Microscopy
0 Views •
2023
Fluorescence microscopy is a very powerful analytical tool that combines the magnifying properties of light microscopy with visualization of fluorescence. Fluorescence is a phenomenon that involves absorbance and emission of a small range of light wavelengths by a fluorescent molecule known as a fluorophore. Fluorescence microscopy is accomplished in conjunction with the basic light microscope by the addition of a powerful light source, specialized filters, and a means of fluorescently...
01:04
Electrochemistry: Overview
0 Views •
2024
Electrochemistry is the branch of chemistry that studies the relationship between electrical quantities and chemical reactions, particularly oxidation and reduction. Oxidation is the loss of electrons from a substance, whereas reduction refers to the gain of electrons. A substance with a strong electron affinity is called an oxidizing agent (oxidant), and a reducing agent (reductant) is a species that donates electrons. Oxidation and reduction processes are pivotal to electrochemical reactions,...
11:23
Lensless Fluorescent Microscopy on a Chip
0 Views •
Cited by 8 •
2011
A lensless on-chip fluorescent microscopy platform is demonstrated that can image fluorescent objects over an ultra-wide field-of-view of e.g., >0.6-8 cm2 with <4μm resolution using a compressive sampling based decoding algorithm. Such a compact and wide-field fluorescent on-chip imaging modality could be valuable for high-throughput cytometry, rare-cell research and microarray-analysis.
10:59
Tracking Electrochemistry on Single Nanoparticles with Surface-Enhanced Raman Scattering Spectroscopy and Microscopy
0 Views •
Cited by 1 •
2023
The protocol describes how to monitor electrochemical events on single nanoparticles using surface-enhanced Raman scattering spectroscopy and imaging.
FAQs
The applied potential changes the oxidation-reduction state of electroactive species at an electrode interface. A fluorescent probe or label responds to the resulting molecular change through altered intensity, spectrum, or lifetime. Recording that optical response alongside current and potential lets researchers relate a localized molecular event to an electrochemical measurement rather than interpreting either signal in isolation.
These fluorescence features provide different ways to report molecular behavior. Changes in intensity can indicate altered concentration or activity, whereas spectral or lifetime changes can reflect the local environment or molecular state. Selecting the most informative signal allows researchers to track biochemical events at the interface and compare their timing and location with the electrochemical response.
Reactions at an electrode interface may not proceed uniformly across the observed region. Spatially resolved fluorescence can reveal local differences in reaction kinetics, molecular transport, or interfacial behavior that a bulk current alone may average together. This comparison helps identify heterogeneous activity and clarifies whether an overall electrochemical response arises from localized or broadly distributed events.
A typical workflow pairs a fluorescent probe or label with an electrochemical measurement at the electrode interface. Researchers apply a potential, monitor the resulting current, and record fluorescence changes in intensity, spectrum, or lifetime. They then correlate the optical and electrochemical data spatially and temporally to connect molecular signals with reaction behavior.
In biochemistry, the approach can be applied to redox enzymes, biomolecular interactions, and membrane processes. Fluorescence supplies localized information about molecular concentration, activity, environment, or state, while electrochemical data provide a quantitative response to the driven reaction. Together, these measurements help connect biochemical behavior with events occurring at an electrode interface.
For biosensor studies, the method links a fluorescent molecular readout with current and potential. This relationship can show how a sensor’s biochemical recognition or redox activity appears spatially at the electrode interface and how strongly it corresponds to the electrochemical response. Such correlations help evaluate interfacial behavior and interpret sensor performance beyond a bulk measurement alone.