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Rapid Commun."],"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>Interfacial mismatch between soft substrates and rigid components fundamentally limits the reliability of stretchable hybrid electronics (SHEs), especially when attempting to simultaneously achieve high bulk strength and strong interfacial adhesion. Here, we introduce a surface activation strategy based on dynamic phenol\u2010urethane bond exchange to enable self\u2010adhesive and conductive stretchable conductors, allowing rigid electronic devices to be directly attached to the substrate in a plug\u2010and\u2010play manner. A dynamic bisphenol polyurethane elastomer (BPU) was designed to unify high intrinsic strength with tunable dynamic activity by programming phenol\u2010urethane bonds, resulting in broadly tunable mechanical properties, with tensile strength ranging from 15 to 50\u00a0MPa and elongation from 395% to 757%. After 45\u00a0min of ethanol\u2010vapor activation, the BPU surface achieved a peeling strength of 10.5 N\/cm while maintaining high mechanical strength (26.6\u00a0MPa). A semi\u2010embedded conductive network was constructed by thermally induced reorganization of Ag nanowires (Ag NWs), yielding stretchable conductors with low sheet resistance (11 \u03a9\/sq), strong adhesion (7.75 N\/cm), and high stretchability (\u2248270%). The prepared SHEs sustain up to 250% strain and retain stable conductivity after 4000 cycles under 30% strain, demonstrating the effectiveness of surface activation in strengthening soft\/hard interfaces.<\/jats:p>","DOI":"10.1002\/marc.202500959","type":"journal-article","created":{"date-parts":[[2026,1,28]],"date-time":"2026-01-28T21:26:45Z","timestamp":1769635605000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Surface\u2010Activated Phenol\u2010Urethane Elastomer Enabling Tough, Adhesive, and Conductive Interfaces for Stretchable Hybrid Electronics"],"prefix":"10.1002","author":[{"given":"Shuqi","family":"Chen","sequence":"first","affiliation":[{"name":"School of Materials Science and Engineering Key Lab of Guangdong Province For High Property and Functional Macromolecular Materials South China University of Technology  Guangzhou P. R. China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zelin","family":"Liu","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering Key Lab of Guangdong Province For High Property and Functional Macromolecular Materials South China University of Technology  Guangzhou P. R. China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0000-5581-2768","authenticated-orcid":false,"given":"Liwei","family":"Lu","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering Key Lab of Guangdong Province For High Property and Functional Macromolecular Materials South China University of Technology  Guangzhou P. R. 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China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9514-4602","authenticated-orcid":false,"given":"Lan","family":"Liu","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering Key Lab of Guangdong Province For High Property and Functional Macromolecular Materials South China University of Technology  Guangzhou P. R. 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