121st General Meeting of the KCS

Type Poster Presentation
Area Polymer Chemistry
Room No. Event Hall
Time 4월 20일 (금요일) 11:00~12:30
Code POLY.P-26
Subject The study of novel thiophene and selenophene-based conjugated low bandgap polymers
Authors Jinyeong Jeong, INTAE KIM*
Department of Chemistry, Kwangwoon University, Korea
Abstract In this study, we investigated the photovoltaic properties of newly synthesized low bandgap conjugated polymers, poly(4-(4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b:4,5-b' ]dithiophen-2-yl)-8-(5-(2,6-didodecylbenzo[1,2-d:4,5-d' ]bis(thiazole)-4-yl)thiophen-2-yl)-2,6-didodecylbenzo[1,2-d:4,5-d' ]bis(thiazole)) (P1) and poly(4-(4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b:4,5-b' ]dithiophen-2-yl)-8-(5-(2,6-didodecylbenzo[1,2-d:4,5-d' ]bis(thiazole)-4-yl)selenophen-2-yl)-2,6-didodecylbenzo[1,2-d:4,5-d' ]bis(thiazole)) (P2). P1 is a thiophene-based conjugated polymer (TCP), and P2 is a selenophene-based conjugated polymer (SCP). These two polymer were studied by NMR and gel permeation chromatography(GPC). We investigated the physical properties of the polymers by conductivity. In addition, the optical, electrochemical and morphological properties of both polymers are studied by UV-vis spectroscopy, cyclic voltammetry and atomic force microscopy (AFM). Later, we investigated the photovoltaic properties of both low bandgap polymers blended with PC61BM in different ratio with different thicknesses. Moreover, post thermal annealing at different temperatures for both polymers was investigated, and the results show that P2(SCP) exhibited stronger molecular orientation properties as compared to P1(TCP).
E-mail jjy473@nate.com