{"id":1486,"date":"2025-12-23T13:13:17","date_gmt":"2025-12-23T13:13:17","guid":{"rendered":"https:\/\/citations.tools.bio-logic.fr\/?p=1486"},"modified":"2025-12-23T13:13:17","modified_gmt":"2025-12-23T13:13:17","slug":"enhanced-optical-contrast-and-switching-in-near%e2%80%90infrared-electrochromic-devices-by-optimizing-conjugated-polymer-oligoethylene-glycol-sidechain-content-and-gel-electrolyte-composition","status":"publish","type":"post","link":"https:\/\/citations.tools.bio-logic.fr\/?p=1486","title":{"rendered":"Enhanced Optical Contrast and Switching in Near\u2010Infrared Electrochromic Devices by Optimizing Conjugated Polymer Oligo(Ethylene Glycol) Sidechain Content and Gel Electrolyte Composition"},"content":{"rendered":"<h4>DOI:<\/h4>\n<p><a href=\"https:\/\/doi.org\/10.1002\/adfm.202309428\" target=\"_blank\" rel=\"noopener\">10.1002\/adfm.202309428<\/a><\/p>\n<h4>Authors:<\/h4>\n<p>Robert M. Pankow, Brendan P. Kerwin, Yongjoon Cho, Seonghun Jeong, Giacomo Forti, Bryan Musolino, Changduk Yang, Antonio Facchetti, Tobin J. Marks<\/p>\n<h4>Abstract:<\/h4>\n<p>Abstract A detailed investigation addressing the effects of functionalizing conjugated polymers with oligo(ethylene glycol) (EG n ) sidechains on the performance and polymer\u2010electrolyte compatibility of electrochromic devices (ECDs) is reported. The electrochemistry for a series of donor\u2010acceptor copolymers having near\u2010infrared (NIR)\u2010optical absorption, where the donor fragment is 3,4\u2010ethylenedioxythiophene (EDOT) or an EG n functionalized bithiophene (g2T) and the acceptor fragment is diketopyrrolopyrrole (DPP) functionalized with branched alkyl or EG n sidechains, is extensively probed. ECDs are next fabricated and it is found that EG n sidechain incorporation must be finely balanced to promote polymer\u2010electrolyte compatibility and provide efficient ion exchange. Proper electrolyte\u2010cation pairing and polymer structural tuning affords a 2x increase in optical contrast (from 12% to 24%) and &gt;60x reduction in switching time (from 20 to 0.3 s). Atomic force microscopy (AFM)\/grazing incidence wide\u2010angle X\u2010ray scattering (GIWAXS) characterization of the polymer film morphology\/microstructure reveals that an over\u2010abundance of EG n sidechains generates large polymer crystallites, which can suppress ion exchange. Lastly, time\u2010of\u2010flight secondary ion mass spectrometry (ToF\u2010SIMS) indicates sidechain\/electrolyte identity does not influence the electrolyte penetration depth into the films, and EG n sidechain inclusion increases electrolyte cation uptake. The material structural design insight and guidelines regarding the polymer\u2010electrolyte ion insertion\/expulsion dynamics reported here should be of significant utility for developing next\u2010generation mixed ionic\u2010electronic conducting materials.<\/p>\n","protected":false},"excerpt":{"rendered":"<h4>DOI:<\/h4>\n<div class=\"b-doi\">10.1002\/adfm.202309428<\/div>\n<h4>Authors:<\/h4>\n<div class=\"b-author\">Robert M. Pankow, Brendan P. Kerwin, Yongjoon Cho, Seonghun Jeong, Giacomo Forti, Bryan Musolino, Changduk Yang, Antonio Facchetti, Tobin J. Marks<\/div>\n<h4>Abstract:<\/h4>\n<div class=\"b-intro\">Abstract A detailed investigation addressing the effects of functionalizing conjugated polymers with oligo(ethylene glycol) (EG n ) sidechains on the performance and polymer\u2010electrolyte compatibility of electrochromic devices (ECDs) is reported. The electrochemistry for a series of donor\u2010acceptor copolymers having near\u2010infrared (NIR)\u2010optical absorption, where the donor fragment is 3,4\u2010ethylenedioxythiophene (EDOT) or&hellip;<\/div>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[25],"tags":[],"class_list":["post-1486","post","type-post","status-publish","format-standard","hentry","category-sp-150-potentiostat"],"_links":{"self":[{"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=\/wp\/v2\/posts\/1486","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1486"}],"version-history":[{"count":0,"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=\/wp\/v2\/posts\/1486\/revisions"}],"wp:attachment":[{"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1486"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1486"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1486"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}