biostudies-literatureUnknownLi CThe p-π conjugated polymers have garnered considerable interest owing to their distinctive electronic structures, which arise from the interaction between p orbitals and π electrons. Currently, the p-π conjugated polymers with charged side chains have been extensively studied, those featuring charged backbones are rare due to the synthetic difficulties. In this work, we developed a spontaneous amino-yne click polymerization utilizing pyridinium-activated alkyne and aromatic primary amine monomers, enabling the efficient synthesis of p-π conjugated ionic polymers with high weight-average molecular weights (<i>M</i> _w, up to 44 100) and excellent yields (up to 98%). The resultant polymers are emissive, but demonstrate remarkable photothermal properties. Upon irradiation with an 80Chemical sciencehttps://www.ebi.ac.uk/biostudies/studies/S-EPMC12394897biostudies-literatureSpontaneous amino-yne click polymerization enabled by pyridinium-activated alkynes toward p-π conjugated ionic polymers.PMC12394897Zhang GQin ALi CZhang KWang BWang CXu HTang BZWei LLiu WfalseSpontaneous amino-yne click polymerization enabled by pyridinium-activated alkynes toward p-π conjugated ionic polymers.The p-π conjugated polymers have garnered considerable interest owing to their distinctive electronic structures, which arise from the interaction between p orbitals and π electrons. Currently, the p-π conjugated polymers with charged side chains have been extensively studied, those featuring charged backbones are rare due to the synthetic difficulties. In this work, we developed a spontaneous amino-yne click polymerization utilizing pyridinium-activated alkyne and aromatic primary amine monomers, enabling the efficient synthesis of p-π conjugated ionic polymers with high weight-average molecular weights (<i>M</i> _w, up to 44 100) and excellent yields (up to 98%). The resultant polymers are emissive, but demonstrate remarkable photothermal properties. Upon irradiation with an 802025-01-01T00:00:00Z2025 Aug2026-05-29T17:53:43.577Z2026-04-08T05:44:03.832ZS-EPMC123948974089632410.1039/d5sc03991f