Conjugated Polymers for Organic Electronics Applications

Conjugated polymers, defined by alternating single and double bonds along their backbone, possess delocalised π-electronic systems that afford semiconducting behaviour, solution processability and structural tunability. These macromolecules underpin a diverse array of organic electronic devices, including light-emitting diodes, field-effect transistors and solar cells. Tailoring donor–acceptor sequences, side-chain substituents and heteroatom content enables control of energy levels, optical absorption profiles and solid-state morphology. Synthetic methods such as Suzuki and Stille couplings, direct heteroarylation polymerisation and electropolymerisation permit precision in monomer arrangement and molecular weight distribution, while emerging eco-friendly approaches reduce synthetic steps and waste. Advances in polymer crystallinity, molecular ordering and interfacial engineering have driven improvements in charge-carrier mobility, device stability and photoconversion efficiency. Recent research has extended applications to flexible and stretchable electronics, printable sensors and tandem architectures that combine conjugated polymers with perovskite absorbers. By balancing electronic performance, thermal resilience and mechanical compliance, conjugated polymers continue to chart a course towards scalable, low-cost and sustainable solutions for next-generation energy and information technologies.

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Conjugated Polymers for Organic Electronics Applications publication trend

The graph below shows the total number of articles in conjugated polymers for organic electronics applications across all publications each year (not limited to Nature Index journals).

Technical terms

π-Conjugation: Delocalisation of electrons across alternating single and double bonds in a polymer backbone, enabling semiconducting properties.

Donor–Acceptor Polymer: A macromolecule incorporating alternating electron-rich (donor) and electron-poor (acceptor) units to tune energy levels and optical absorption.

Band Gap: The energy difference between the highest occupied molecular orbital and the lowest unoccupied molecular orbital, determining light absorption and charge transport.

Electropolymerisation: Electrochemical oxidation of monomers at an electrode surface to form conjugated polymer films.

Hole Mobility: A measure of the speed at which positive charge carriers (holes) move through a semiconducting material under an electric field.

References

1. D‑A‑D Compounds Combining Dithienopyrrole Donors and Acceptors of Increasing Electron-Withdrawing Capability: Synthesis, Spectroscopy, Electropolymerization, and Electrochromism. The Journal of Physical Chemistry B (2022).
2. Enhancement in Charge Carrier Mobility by Using Furan as Spacer in Thieno[3,2-b]Pyrrole and Alkylated-Diketopyrrolopyrrole Based Conjugated Copolymers. Applied Sciences (2022).
3. Novel Conjugated Polymers Prepared by Direct (Hetero) arylation: An Eco-Friendly Tool for Organic Electronics. Molecules (2018).