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Dopant-Stabilized Assembly of Poly(3-hexylthiophene)
Garion E J Hicks1, Rosemary R Cranston2, Victor Lotocki1
1Lash Miller Chemical Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, M5S 3H6 Toronto, Ontario, Canada.
Journal of the American Chemical Society
|August 31, 2022
Summary
We developed a new method for polymer self-assembly using oxidative doping. This technique controls nanostructure size and properties, offering a versatile tool for solution-phase applications.
Area of Science:
- Materials Science
- Polymer Chemistry
- Nanotechnology
Background:
- Polymer self-assembly is crucial for nanostructure formation in solution.
- Traditional methods rely heavily on solvent interactions for polymer semiconductor assembly.
Purpose of the Study:
- To introduce a novel method for polymer nanostructure assembly driven by oxidative doping.
- To investigate the control over nanostructure morphology and properties through doping.
Main Methods:
- Utilized poly(3-hexythiophene) homopolymer and iron(III) p-toluenesulfonate in benzonitrile.
- Systematically varied dopant concentration and addition temperature.
- Investigated post-formation doping level tuning via sequential dopant addition.
Main Results:
- Achieved polymer nanostructure assembly stabilized by oxidative doping (dopant-stabilized assembly - DSA).
- Demonstrated control over nanostructure size, morphology, planarity, optical absorption, and doping level.
- Observed that nanostructure dimensions depend on polymer conformation during doping.
Conclusions:
- Oxidative doping offers a powerful approach to control polymer nanostructure assembly and optoelectronic properties.
- DSA provides a versatile toolkit for tailoring nanostructures for solution-phase applications.
- Understanding the interplay between doping and polymer conformation is key to precise assembly control.
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