Low-Bandgap Conjugated Donor-Acceptor Copolymers Based on Porphyrin with Strong Two-Photon Absorption

被引：45

作者：

Huang, Xuebin ^{[3
,4
,5
]}

Shi, Qinqin ^{[3
,4
,6
]}

Chen, Wei-Qiang ^{[1
,2
]}

Zhu, Chunli ^{[3
,4
,5
]}

Zhou, Weiyi ^{[3
,4
,6
]}

Zhao, Zhen ^{[3
,4
]}

Duan, Xuan-Ming ^{[1
,2
]}

Zhan, Xiaowei ^{[3
,4
]}

机构：

[1] Chinese Acad Sci, Tech Inst Phys & Chem, Lab Organ Nanophoton, Beijing 100190, Peoples R China

[2] Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Photochem Convent & Funct Mat, Beijing 100190, Peoples R China

[3] Chinese Acad Sci, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China

[4] Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China

[5] Beijing Inst Technol, Dept Chem, Beijing 100083, Peoples R China

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

来源：

MACROMOLECULES | 2010年 / 43卷 / 23期

关键词：

FIELD-EFFECT TRANSISTORS; POLYMER SOLAR-CELLS; CROSS-SECTION; TELECOMMUNICATION WAVELENGTHS; ELECTROCHEMICAL PROPERTIES; OPTICAL-PROPERTIES; GAP; UNITS; DYES; SEMICONDUCTORS;

D O I：

10.1021/ma102275h

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Two new low-bandgap, conjugated donor (D) acceptor (A) copolymers of porphyrin with 2,3-bis(4-trifluoromethylphenyl)pyrido[3,4-b]pyrazine (P1) and perylene diimide (P2) were synthesized by Sonogashira coupling polymerization and compared with porphyrin-dithienothiophene D-D copolymer (P3). All these polymers possess good thermal stability with decomposition temperatures over 300 degrees C. Polymers P1 and P2 in films exhibit strong absorption in near-IR (820-950 nm) with optical bandgaps as low as 1.15 eV; their Q-bands red shift 60 190 nm compared to that of P3, while the Soret bands are similar. The HOMO (-5.3 to -5.4 eV) and LUMO (-3.6 to -4.0 eV) of the D-A polymers are lower than that of the D D polymer. Two-photon absorption (2PA) properties of the polymers were investigated by the femtosecond Z-scan method. The D A polymer P2 exhibits 2PA cross sections over 7000 GM/repeat unit at telecommunication wavelengths (1320 and 1520 nm), larger than that of PI and P3, due to the very strong, rigid, and coplanar perylene diimide acceptor and strong D-A intramolecular charge transfer.

引用

页码：9620 / 9626

页数：7

共 43 条

[1] n-Type Organic Semiconductors in Organic Electronics [J].