Syntheses and Investigation of Electrochemical Properties of Selenophene and Benzotriazole Bearing Copolymers

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Tezin Türü: Yüksek Lisans

Tezin Yürütüldüğü Kurum: Orta Doğu Teknik Üniversitesi, Fen Bilimleri Enstitüsü, Fen Bilimleri Enstitüsü, Türkiye

Tezin Onay Tarihi: 2014

Öğrenci: Hande Ünay

Asıl Danışman (Eş Danışmanlı Tezler İçin): ALİ ÇIRPAN

Eş Danışman: HÜSNÜ EMRAH ÜNALAN

Özet:

Polymers containing selenophene as a π bridge; poly(2-(2-octyldodecyl)-4-(selenophen-2-yl)-7-(5-(thiophen-2-yl)selenophen-2-yl)-2H-benzo[d][1,2,3]triazole) (P-SBTTh) and poly(2-(2-octyldodecyl)-4-(5-phenylselenophen-2-yl)-7-(selenophen-2-yl)-2H-benzo[d][1,2,3]triazole (P-SBTPh) were synthesized via Stille and Suzuki coupling, respectively. Optical and electrochemical properties were investigated and comparisons with their thiophene analogs were done. Selenophene substitution resulted in low band gap and red shifted absorption, high switching times (less than 1s) with reasonable optical contrast. Although both polymers showed moderate stability during chronoamperometry studies,P-SBTPh showed high stability in NIR region with fast switching times. Switching time of P-SBTPh was 0.2 second that is the fastest switching time compared to all benzotriazole-based polymers.