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Updated: Feb 12, 2026
09:16
Oligopeptide Competition Assay for Phosphorylation Site Determination
Published on: May 18, 2017
8.9K
Chirality Dependent Charge Transfer Rate in Oligopeptides
Francesco Tassinari1, Dilhara R Jayarathna2, Nirit Kantor-Uriel1
1Department of Chemical and Biological Physics, Weizmann Institute of Science, Rehovot, 76100, Israel.
Advanced Materials (Deerfield Beach, Fla.)
|April 4, 2018
Summary
Chiral oligopeptides on ferrocene self-assembled on gold exhibit spontaneous magnetization. This phenomenon, driven by chiral induced spin selectivity, results in asymmetric electron transfer rates between enantiomers.
Area of Science:
- Molecular chirality
- Spintronics
- Electrochemistry
Background:
- Chiral molecules can influence electronic properties.
- Ferrocene is a versatile redox-active molecule.
- Self-assembly on surfaces is crucial for molecular devices.
Purpose of the Study:
- To investigate spontaneous magnetization in chiral oligopeptide-ferrocene systems.
- To explore the relationship between molecular chirality and electron transfer asymmetry.
- To understand the role of chiral induced spin selectivity in magnetization.
Main Methods:
- Self-assembly of chiral oligopeptides attached to ferrocene on a gold substrate.
- Electrochemical measurements to determine electron transfer rate constants.
- Magnetization measurements to assess magnetic properties and anisotropy.
Main Results:
- Observation of spontaneous magnetization in the self-assembled system.
- Asymmetric electron transfer rates for reduction and oxidation, reversed between enantiomers.
- High magnetic anisotropy with the easy axis along the molecular orientation.
Conclusions:
- Chiral induced spin selectivity governs the observed electron transfer asymmetry and spontaneous magnetization.
- The chiral oligopeptide-ferrocene system demonstrates a novel route to control magnetism at the molecular level.
- This work opens possibilities for chiral spintronic devices.
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