Quadruple Hydrogen-Bonds Engineering for Intrinsically Stretchable and Healable Semiconducting Polymers

Area of Science:

• Materials Science
• Polymer Chemistry
• Organic Electronics

Background:

• Developing intrinsically stretchable and healable semiconducting polymers is crucial for advanced flexible electronics.
• Integrating high charge-carrier mobility with stretchability and healability presents significant challenges in materials design.

Purpose of the Study:

• To engineer high-performance semiconducting polymers that are both stretchable and healable.
• To overcome the limitations of current materials in flexible electronic applications.

Main Methods:

• A "quadruple-hydrogen-bonds end-capping" strategy was employed to create a unique supramolecular architecture.
• Incorporation of quadruple hydrogen-bonds between end-capping units and alkyl spacers within the polymer backbone.

Main Results:

• The designed polymer architecture demonstrated enhanced crystallinity and ordered packing, reducing π-π stacking distance.
• Achieved superior stretchability with retained molecular ordering during stretching and efficient self-healing properties.
• Exhibited a >2-fold increase in charge-carrier mobility, stable performance under strain, and high mobility recovery after healing.

Conclusions:

• The quadruple hydrogen-bonds end-capping strategy effectively integrates high electrical performance, mechanical stretchability, and healing ability.
• This molecular design approach offers a viable pathway for creating next-generation organic electronics.
• The developed semiconducting polymers show promise for scalable, fully stretchable transistor arrays.