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Rapid Commun."],"published-print":{"date-parts":[[2020,6]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Chain\u2010end\u2010functionalized poly(3\u2010hexylthiophene)s (P3HTs) with benzyl alcohol (\u2500PhCH<jats:sub>2<\/jats:sub>OH), phenol (\u2500PhOH), and benzoic acid (\u2500PhCOOH) groups are directly synthesized based on the Negishi catalyst\u2010transfer polycondensation method utilizing the zincate complex of<jats:italic><jats:sup>t<\/jats:sup><\/jats:italic>Bu<jats:sub>4<\/jats:sub>ZnLi<jats:sub>2<\/jats:sub>. In this system, neither protection nor deprotection steps are required, and also providing a living polymerization system to control the molecular weight while maintaining a low molar mass dispersity (<jats:italic>\u00d0<\/jats:italic><jats:sub>M<\/jats:sub>) of the obtained P3HT derivatives. Indeed, the chain\u2010end\u2010functionalized P3HTs can be synthesized along with controlled number\u2010average molecular weights (<jats:italic>M<\/jats:italic><jats:sub>n<\/jats:sub>= 5100\u201320\u2009000), low<jats:italic>\u00d0<\/jats:italic><jats:sub>M<\/jats:sub>(1.06\u20131.14), and high chain\u2010end functionality (Fn = 46\u201386%). The Fn values for the alcohol and phenol groups are found to be high (86% for \u2500PhCH<jats:sub>2<\/jats:sub>OH and 71% for \u2500PhOH based on<jats:sup>1<\/jats:sup>H NMR, respectively), as also confirmed by matrix\u2010assisted laser desorption\/ionization time of flight mass spectroscopy. The easily synthesizable chain\u2010end\u2010functionalized P3HTs will be applicable for the facile synthesis of block and branched polymers containing P3HT as well as its related semiconducting polymer segments.<\/jats:p>","DOI":"10.1002\/marc.202000148","type":"journal-article","created":{"date-parts":[[2020,5,4]],"date-time":"2020-05-04T09:44:53Z","timestamp":1588585493000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Direct Synthesis of Chain\u2010end\u2010functionalized Poly(3\u2010hexylthiophene) without Protecting Groups Using a Zincate Complex"],"prefix":"10.1002","volume":"41","author":[{"given":"Shin","family":"Inagaki","sequence":"first","affiliation":[{"name":"Department of Organic Materials Science Graduate School of Organic Materials Science Yamagata University 4\u20103\u201016 Jonan 992\u20108510 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