Band gap tunable for near-infrared absorbing chromophores with multi-triphenylamine and tris (thieno)hexaazatriphenylenes acceptors

被引：11

作者：

Gao, Baoxiang ^{[1
]}

Xia, Defang ^{[1
]}

Geng, Yanhou ^{[2
]}

Cheng, Yanxiang ^{[2
]}

Wang, Lixiang ^{[2
]}

机构：

[1] Hebei Univ, Coll Chem & Environm Sci, Minist Educ, Key Lab Med Chem & Mol Diag, Baoding 071002, Peoples R China

[2] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China

来源：

TETRAHEDRON LETTERS | 2010年 / 51卷 / 14期

基金：

中国国家自然科学基金;

关键词：

DISCOTIC LIQUID-CRYSTALS; CHARGE-CARRIER MOBILITY; DESIGN; DONOR; TRANSISTORS; MESOGENS; BEHAVIOR;

D O I：

10.1016/j.tetlet.2010.02.039

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Two disk-like D-A type chromophores with multi-triphenylamine donors and hexaazatriphenylenes acceptors were synthesized and fully characterized by H-1 and C-13 NMR, elemental analysis and mass spectrometry. The effects of the hexaazatriphenylene oil the optical and electrochemical properties and band gap of the chromophores were investigated. As the hexaazatriphenylene core fused with three thiophene rings, the band gaps of the compounds Could be tuned from 1.65 eV to 1.15 eV. The pi-pi* absorption peak and charge-transfer absorption peak of the hexaazatriphenylene Compounds were Fed shifted from visible spectrum region (393 and 530 nm) to near-infrared spectrum region (542 and 756 nm). In addition, clue to an increase in the pi electronic Coupling between electron donor and electron acceptor, the extinction coefficient (charge-transfer absorption) of the hexaazatriphenylene compound decreases 85% from 3.4 x 10(4) mol(-1) dm(-3) cm(-1) to 0.5 x 10(4) mol (1) dm (3) cm (1). (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：1919 / 1921

页数：3

共 33 条

[1] Electrogenerated poly(thiophenes) with extremely narrow bandgap and high stability under n-doping cycling [J].