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Here, we report a series of diketopyrrolopyrrole (DPP)\u2010based polymers functionalized with aliphatic\u2010glycol hybrid side chains (PDPP\u20104EG\u2010T2 and PDPP\u20104EG\u2010Se2) and systematically investigate the impact of their structure\u00a0on OECT performance. In particular, the substitution of chalcogen units (biselenophenes) in the polymer backbone significantly enhances backbone planarity, polarizability, and quinoidal character, thereby improving \u03c0\u2010electron delocalization and reinforcing \u03c0\u2013\u03c0 stacking interactions under doping. As a result, PDPP\u20104EG\u2010Se2 achieves a superior hole mobility of 9.8 cm\n                    <jats:sup>2<\/jats:sup>\n                    V\n                    <jats:sup>\u2212<\/jats:sup>\n                    <jats:sup>1<\/jats:sup>\n                    s\n                    <jats:sup>\u2212<\/jats:sup>\n                    <jats:sup>1<\/jats:sup>\n                    and a\n                    <jats:italic>\u00b5<\/jats:italic>\n                    C* of 786 F cm\n                    <jats:sup>\u2212<\/jats:sup>\n                    <jats:sup>1<\/jats:sup>\n                    V\n                    <jats:sup>\u2212<\/jats:sup>\n                    <jats:sup>1<\/jats:sup>\n                    s\n                    <jats:sup>\u2212<\/jats:sup>\n                    <jats:sup>1<\/jats:sup>\n                    with enhanced operational stability in p\u2010type OECTs. By employing PDPP\u20104EG\u2010Se2 as a unified material for both electrode and channel components, we construct unipolar inverters and integrate them into a ring oscillator circuit, achieving a high gain value per dynamic power consumption (45.3\u00a0V\/V nW\n                    <jats:sup>\u2212<\/jats:sup>\n                    <jats:sup>1<\/jats:sup>\n                    ) alongside with a reliable inverter performance (gain = 40.6\u00a0V\/V). This study underscores the importance of a doping\u2010tolerant quinoidal framework and tailored molecular\u2010level structural arrangement for achieving high OECT performance with a superior hole mobility.\n                  <\/jats:p>","DOI":"10.1002\/adma.75261","type":"journal-article","created":{"date-parts":[[2026,10,8]],"date-time":"2026-10-08T09:43:26Z","timestamp":1791452606000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["High\u2010Mobility Chalcogenophene\u2010Engineered Diketopyrrolopyrrole Mixed Ionic\u2010Electronic Conductors With Doping Tolerance for Low\u2010Power Organic Electrochemical Transistors"],"prefix":"10.1002","author":[{"given":"Shinbee","family":"Oh","sequence":"first","affiliation":[{"name":"Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology (KAIST)  Daejeon South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tae Hoon","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Materials Science and Engineering, Research Institute of Advanced Materials, Soft Foundry Institute, and Institute of Applied Physics Seoul National University Seoul South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dahyun","family":"Jeong","sequence":"additional","affiliation":[{"name":"Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology (KAIST)  Daejeon South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ji Hwan","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Materials Science and Engineering, Research Institute of Advanced Materials, Soft Foundry Institute, and Institute of Applied Physics Seoul National University Seoul South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7404-8731","authenticated-orcid":false,"given":"Seungjin","family":"Lee","sequence":"additional","affiliation":[{"name":"Photoenergy Research Center Korea Research Institute of Chemical Technology (KRICT)  Daejeon South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0615-6693","authenticated-orcid":false,"given":"Tan Ngoc\u2010Lan","family":"Phan","sequence":"additional","affiliation":[{"name":"Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology (KAIST)  Daejeon South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0003-3201-5960","authenticated-orcid":false,"given":"Alexander","family":"Tipan\u2010Quishpe","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering Gwangju Institute of Science and Technology (GIST)  Gwangju South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7205-3054","authenticated-orcid":false,"given":"Myung\u2010Han","family":"Yoon","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering Gwangju Institute of Science and Technology (GIST)  Gwangju South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1230-3626","authenticated-orcid":false,"given":"Keehoon","family":"Kang","sequence":"additional","affiliation":[{"name":"Department of Materials Science and Engineering, Research Institute of Advanced Materials, Soft Foundry Institute, and Institute of Applied Physics Seoul National University Seoul South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7783-9689","authenticated-orcid":false,"given":"Bumjoon J.","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology (KAIST)  Daejeon South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,10,8]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1038\/natrevmats.2017.86"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41563\u2010022\u201001450\u20108"},{"key":"e_1_2_9_4_1","doi-asserted-by":"crossref","DOI":"10.1126\/sciadv.aat0911","article-title":"Direct Metabolite Detection With an n\u2010Type Accumulation Mode Organic Electrochemical Transistor","volume":"4","author":"Pappa A. 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