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Updated: Oct 26, 2025
05:48
Controlled Photoredox Ring-Opening Polymerization of O-Carboxyanhydrides Mediated by Ni/Zn Complexes
Published on: November 21, 2017
8.2K
Polymerization/depolymerization of chiral metallo-supramolecular assembly induced by redox change.
Maya Marinova1, Antoine Bonnefont1, Thierry Achard1
1Institute Physical and Chemistry Materials of Strasbourg, CNRS University of Strasbourg, Strasbourg, France.
Chirality
|July 28, 2021
Summary
Chiral metallo-supramolecular assembly can polymerize and depolymerize in response to copper redox changes. This chirality-induced process allows for controlled formation of different molecular structures based on copper
Area of Science:
- Coordination Chemistry
- Supramolecular Chemistry
- Materials Science
Background:
- Chiral metallo-supramolecular assemblies offer unique properties for advanced materials.
- Controlling the assembly and disassembly of these structures is crucial for their applications.
Purpose of the Study:
- To investigate the polymerization and depolymerization of chiral metallo-supramolecular assemblies.
- To explore the role of copper redox states in directing self-assembly and self-discrimination.
Main Methods:
- Synthesis of ML2-type complexes using enantiopure monotopic and ditopic ligands.
- Utilizing cyclic voltammetry to monitor redox-induced changes.
- Characterization of resulting homochiral and heterochiral species.
Main Results:
- Copper(I) favors heterochiral complex formation, leading to dinuclear species.
- Copper(II) promotes homochiral species, including mononuclear and polymeric forms.
- Demonstration of a chirality-induced stimulus-sensitive polymerization/depolymerization process.
Conclusions:
- The redox state of copper acts as a switch to control chiral self-recognition and self-discrimination in metallo-supramolecular assemblies.
- This provides a novel method for stimuli-responsive control over molecular assembly and disassembly.
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