Related Experiment Video
Updated: Jun 18, 2026
10:08
Fabrication of Large-area Free-standing Ultrathin Polymer Films
Published on: June 3, 2015
Polymer multilayer films obtained by electrochemically catalyzed click chemistry
Gaulthier Rydzek1, Jean-Sébastien Thomann, Nejla Ben Ameur
1Centre National de la Recherche Scientifique, Unité Propre de Recherche 22, Institut Charles Sadron, 23 rue du Loess, BP 84047, 67034 Strasbourg Cedex 2, France.
Langmuir : the ACS Journal of Surfaces and Colloids
|December 3, 2009
Summary
This study demonstrates a novel method for building polyelectrolyte multilayer (PEM) films using an electrochemically triggered click reaction. This approach allows controlled film growth via electrochemical reduction of copper ions, offering a precise way to fabricate functional materials.
Area of Science:
- Materials Science
- Electrochemistry
- Polymer Chemistry
Background:
- Layer-by-layer assembly is a versatile technique for fabricating thin films.
- Click chemistry offers efficient and specific bond formation.
- Electrochemical methods provide precise control over chemical reactions.
Purpose of the Study:
- To develop a covalent layer-by-layer construction method for polyelectrolyte multilayer (PEM) films.
- To utilize an electrochemically triggered Sharpless click reaction for controlled film growth.
- To investigate the influence of electrochemical parameters on PEM film formation.
Main Methods:
- Electrochemical quartz crystal microbalance (EQCM) was used to monitor film deposition.
- Sharpless click reaction catalyzed by electrochemically generated Cu(I) from Cu(II).
- Poly(acrylic acid) (PAA) functionalized with alkyne (PAA(Alk)) or azide (PAA(Az)) groups.
Main Results:
- Successful covalent layer-by-layer construction of PEM films was achieved.
- Film growth is controlled by applying a mild potential to reduce Cu(II) to Cu(I).
- Film thickness increment depends on Cu(II) and polyelectrolyte concentrations and reduction time.
Conclusions:
- Electrochemical triggering of the Sharpless click reaction provides a ligand- and reducing agent-free method for PEM film fabrication.
- The developed method allows for controlled and tunable growth of PEM films.
- A model explaining ion diffusion and polyelectrolyte anchoring dynamics was proposed.
