関連する実験動画

Updated: Aug 14, 2026

Measuring the Induced Membrane Voltage with Di-8-ANEPPS
05:52

Measuring the Induced Membrane Voltage with Di-8-ANEPPS

Published on: November 20, 2009

負荷移転電染色機構の証拠は,膜電位のプローブで検出されました

L M Loew, S Scully, L Simpson

    Nature
    |October 11, 1979
    PubMed
    まとめ

    光学探査機は染料の分布を変化させ,膜の潜在力を監視する. この研究は,電場に対するクロモフォアの直接的な反応を明らかにし,普遍的な膜プローブの可能性を示唆しています.

    さらに関連する動画

    Merging Ion Concentration Polarization between Juxtaposed Ion Exchange Membranes to Block the Propagation of the Polarization Zone08:06

    Merging Ion Concentration Polarization between Juxtaposed Ion Exchange Membranes to Block the Propagation of the Polarization Zone

    Published on: February 23, 2017

    A Micro-agar Salt Bridge Electrode for Analyzing the Proton Turnover Rate of Recombinant Membrane Proteins08:09

    A Micro-agar Salt Bridge Electrode for Analyzing the Proton Turnover Rate of Recombinant Membrane Proteins

    Published on: January 7, 2019

    関連する概念動画

    Interfacial Electrochemical Methods: Overview01:06

    Interfacial Electrochemical Methods: Overview

    Interfacial electrochemical methods focus on the phenomena occurring at the boundary between an electrode and a solution, as opposed to bulk methods that concentrate on the solution's overall properties. These interfacial methods are classified as either static or dynamic based on the presence of a nonzero current in the electrochemical cell and the consistency of analyte concentrations. Static methods, such as potentiometry, measure the cell's potential without any significant current passing...
    Potentiometry: Membrane Electrodes01:15

    Potentiometry: Membrane Electrodes

    Membrane electrodes, also known as p-ion electrodes, use membranes that selectively interact with free analyte ions, generating a potential difference across the membrane. The resulting membrane potential, known as the asymmetry potential, is not zero even when analyte concentrations on both sides of the membrane are equal. The membrane's response is typically not selective to a single analyte but proportional to the concentration of all ions in the sample solution capable of interacting at the...
    Electrochemical Gradient and Channel Proteins: An Overview01:21

    Electrochemical Gradient and Channel Proteins: An Overview

    An electrochemical gradient is a fundamental concept in biology and chemistry. It regulates the movement of ions across cell membranes. This movement is influenced by two factors:
    The electrical gradient: The electrical gradient across cell membranes refers to the difference in electric charge between the inside and outside of a cell.  This difference drives the movement of ions towards or away from the cells. For instance, if the inside of the cell is more negatively charged relative to the...
    Electrochemical Systems01:24

    Electrochemical Systems

    Electrochemical systems provide a fascinating insight into the dynamic interplay of charged species within various phases. One notable example is the interaction between a membrane permeable to K⁺ ions but not to Cl⁻ ions, separating an aqueous KCl solution from pure water. As K⁺ ions diffuse through the membrane, they generate net charges on each phase, leading to a potential difference between them.Similarly, when a piece of Zn is immersed in an aqueous ZnSO₄ solution, the Zn metal, composed...
    Junction Potentials in Galvanic Cells01:21

    Junction Potentials in Galvanic Cells

    The Nernst equation, derived under the assumption of thermodynamic equilibrium, calculates the electromotive force (emf) as the sum of potential differences at phase boundaries in a reversible cell without a liquid junction. However, in irreversible cells such as the Daniell cell, an additional potential difference named the liquid-junction potential (EJ) arises across the interface of two electrolyte solutions due to different ion diffusion rates. This EJ represents the potential difference...
    The Electrical Double Layer01:30

    The Electrical Double Layer

    In the region where two bulk phases meet, an intricate electric charge distribution arises due to charge transfer, ion adsorption, molecular orientation, and charge distortion. This complex distribution is commonly referred to as the electrical double layer.When a solid electrode interfaces with ions in an electrolyte solution, the speed of electron transfer dictates the rates of oxidation and reduction. The electrode acquires a charge through the escape of atoms into the solution as cations or...