Solution-processable n-type conducting polymer smart textiles for multifunctional wearable electronics

Multifunctional conductive textiles are essential components of emerging wearable electronic systems. However, simultaneously achieving high electrical conductivity, long-term environmental stability, textile-compatible manufacturing, and integrated device functions remains challenging. Here, we develop all solution-processed waterborne polyurethane/poly(benzodifurandione)/polydopamine/cotton fabric (WPPCF) conductive textiles by coating n-type poly(benzodifurandione) (PBFDO) onto commercial cotton fabric with interfacial modification and waterborne polyurethane encapsulation. WPPCF reaches a high conductivity of 454.51 S m^-1 with excellent air, washing and bending durability yielding an X-band electromagnetic interference (EMI) shielding effectiveness of 41.74 dB. Its tunable electromagnetic response enables a wireless passive compression strain sensor for dual-parameter remote strain readout through resonance-frequency shifts and amplitude variations. The textile also exhibits remarkable Joule heating, reaching 112.7 ^°C at 5 V under −25 ^°C ambient for low-temperature thermal management. This work provides a scalable wet-processing strategy and versatile platform for integrated intelligent wearable devices.