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Creators/Authors contains: "Yan, Yueming"

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  1. ; ; ; ; ; ; ; ; ; ; et al (, Science)
    Current research on ferroelectric polymers centers predominantly on poly(vinylidene fluoride) (PVDF)–based fluoropolymers because of their superior performance. However, they are considered “forever chemicals” with environmental concerns. We describe a family of rationally designed fluorine-free ferroelectric polymers, featuring a polyoxypropylene main chain and disulfonyl alkyl side chains with a C3 spacer: −SO2CH2CHRCH2SO2− (R = −H or −CH3). Both experimental and simulation results demonstrate that strong dipole-dipole interactions between neighboring disulfonyl groups induce ferroelectric ordering in the condensed state, which can be tailored by changing the R group: ferroelectric for R = −H or relaxor ferroelectric for R = −CH3. At low electric fields, the relaxor polymer exhibits electroactuation and electrocaloric performance comparable with those of state-of-the-art PVDF-based tetrapolymers. 
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    Free, publicly-accessible full text available July 3, 2026
  2. ; ; ; ; ; ; (, IEEE 14th International Conference on Solid-State and Integrated Circuit Technology)
    Accepted Manuscript Full Text Available