Synthesis and characterization of dithienobenzothiadiazole-based donor-acceptor conjugated polymers for organic solar cell applications

被引：18
|
作者：
Efrem, Amsalu [1 ]
Lim, Chia-Juan [1 ]
Lu, Yong [1 ]
Ng, Siu-Choon [1 ]
机构：
[1] Nanyang Technol Univ, Sch Chem & Biomed Engn, Singapore 637459, Singapore
来源：
TETRAHEDRON LETTERS | 2014年 / 55卷 / 35期
关键词：
BHJ solar cell; Donor-acceptor conjugated polymer; Dithienobenzothiadiazole; Optical and electrochemical properties; COPOLYMER;
D O I：
10.1016/j.tetlet.2014.06.078
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
New donor-acceptor conjugated polymers (P1 and P2) containing a fused-ring dithienobenzothiadiazole (DT-BTD building block) were synthesized by using the Stille copolymerization method. The synthesized polymers were characterized by H-1 NMR, GPC, and elemental analysis. The optical band gaps of the polymers were found to be 1.86 and 1.9 eV, respectively, as calculated from their film onset absorption edge. Upon annealing both produced a distinct shoulder peak in their film absorption spectra. The electrochemical studies of P1 and P2 revealed that the HOMO and LUMO energy levels of the polymer were -5.3, -5.1 eV, and -3.4, -3.2 eV, respectively. The polymers are thermally stable up to 250-350 degrees C. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：4849 / 4852
页数：4
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