Solution-Processable Star-Shaped Photovoltaic Organic Molecule with Triphenylamine Core and Benzothiadiazole-Thiophene Arms

被引：117

作者：

Zhang, Jing ^{[1
,2
]}

Yang, Yi ^{[1
,2
]}

He, Chang ^{[1
]}

He, Youjun ^{[1
,2
]}

Zhao, Guangjin ^{[1
,2
]}

Li, Yongfang ^{[1
]}

机构：

[1] Chinese Acad Sci, Key Lab Organ Solids, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

来源：

MACROMOLECULES | 2009年 / 42卷 / 20期

关键词：

HETEROJUNCTION SOLAR-CELLS; LIGHT-EMITTING-DIODES; LOW-BAND-GAP; HYBRID SYSTEMS; OLIGOTHIOPHENE; POLYMER; DEVICES; SEMICONDUCTORS; COPOLYMERS; EFFICIENCY;

D O I：

10.1021/ma901896n

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A new star-shaped (triphenylamine) TPA-containing molecule with TPA as core and benzothiadiazole-(4-hexyl)thiophene as arms S(TPA-BT-4HT) was synthesized. First, 4-bromo-7-(4-hexyl-2-thienyl)-2, 1,3-benzothiadiazole was synthesized from 4,7-dibromo-2,1,3- benzothiadiazole and tributyl-(4-hexyl-2-thienyl) stannane by Pd(ph3)2C12-catalyzed reaction. Then, monomer 2 was prepared, and finally, S(TPA-BT-4HT) was synthesized from monomer 1 and monomer 2 by a palladium-catalyzed Heck reaction. Electrochemical cyclic voltammetry was carried out for the S(TPA-BT-4HT) film on a glassy carbon electrode, in order to measure the HOMO and LUMO energy levels of S(TPA-BT-4HT). The TGA measurement was performed on a Perkin-Elmer TGA-7 apparatus. The HOMO and LUMO energy levels and the electrochemical band gap were estimated to be -5.19, -3.08 and 2.11 eV from the onset oxidation and reduction potentials.

引用

页码：7619 / 7622

页数：4

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