{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,1]],"date-time":"2026-02-01T01:40:43Z","timestamp":1769910043663,"version":"3.49.0"},"reference-count":73,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2019,1,9]],"date-time":"2019-01-09T00:00:00Z","timestamp":1546992000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["21866012, 61764003"],"award-info":[{"award-number":["21866012, 61764003"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Key Research and Development Program of Hainan Province","award":["ZDYF2017166"],"award-info":[{"award-number":["ZDYF2017166"]}]},{"name":"Cooperative innovation fund project of Tianjin University and Hainan University","award":["HDTDU201805"],"award-info":[{"award-number":["HDTDU201805"]}]},{"name":"Scientific Research Foundation of Hainan University","award":["kyqd1659"],"award-info":[{"award-number":["kyqd1659"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Organic electrochemical transistors (OECTs) are promising devices for applications in in vitro and in vivo measurements. OECTs have two important sensing interfaces for signal monitoring: One is the gate electrode surface; the other is the channel surface. This mini review introduced the new developments in chemical and biological detection of the two sensing interfaces. Specific focus was given on the modification technological approaches of the gate or channel surface. In particular, some unique strategies and surface designs aiming to facilitate signal-transduction and amplification were discussed. Several perspectives and current challenges of OECTs development were also briefly summarized.<\/jats:p>","DOI":"10.3390\/s19020218","type":"journal-article","created":{"date-parts":[[2019,1,10]],"date-time":"2019-01-10T03:22:31Z","timestamp":1547090551000},"page":"218","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":67,"title":["Functional Sensing Interfaces of PEDOT:PSS Organic Electrochemical Transistors for Chemical and Biological Sensors: A Mini Review"],"prefix":"10.3390","volume":"19","author":[{"given":"Jianjun","family":"Liao","sequence":"first","affiliation":[{"name":"State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China"},{"name":"College of Ecology and Environment, Hainan University, Haikou 570228, China"}]},{"given":"Hewei","family":"Si","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China"},{"name":"College of Materials and Chemical Engineering, Hainan University, Haikou 570228, China"}]},{"given":"Xidong","family":"Zhang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China"},{"name":"College of Materials and Chemical Engineering, Hainan University, Haikou 570228, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7325-8182","authenticated-orcid":false,"given":"Shiwei","family":"Lin","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China"},{"name":"College of Materials and Chemical Engineering, Hainan University, Haikou 570228, China"}]}],"member":"1968","published-online":{"date-parts":[[2019,1,9]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1637","DOI":"10.1021\/am100154e","article-title":"Ion-Sensitive Properties of Organic Electrochemical Transistors","volume":"2","author":"Lin","year":"2010","journal-title":"ACS Appl. 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