Color tuning in benzo[1,2,5]thiadiazole-based small molecules by amino conjugation/deconjugation: Bright red-light-emitting diodes

被引：348

作者：

Thomas, KRJ ^{[1
]}

Lin, JT ^{[1
]}

Velusamy, M ^{[1
]}

Tao, YT ^{[1
]}

Chuen, CH ^{[1
]}

机构：

[1] Acad Sinica, Inst Chem, Taipei 115, Taiwan

来源：

ADVANCED FUNCTIONAL MATERIALS | 2004年 / 14卷 / 01期

关键词：

D O I：

10.1002/adfm.200304486

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Bipolar compounds (referred to in general as btza) containing a benzo[1,2,5]thiadiazole core and peripheral diarylamines and/ or 4-tert-butylphenyl moieties have been synthesized via palladium-catalyzed cross-coupling reactions of 4,7-dibromobenzo[1,2,5]thiadiazole with appropriate stannyl compounds. These compounds are fluorescent and the emission color ranges from green to red. The fluorescence of the compounds originates from a charge-transfer process and exhibits solvatochromism. These red-light-emitting materials are amorphous and devices of different configurations were fabricated: 1) ITO/btza/TPBI/ Mg:Ag; II) ITO/btza/Alq(3)/Mg:Ag; III) ITO/btza/Mg:Ag (where ITO indium tin oxide, TPBI = 1,3,5-tris(N-phenylbezimidazol-2-yl)benzene, and Alq(3) = tris(8-hydroxyquinoline)aluminum). The performance of some of the red-light-emitting devices appears to be very promising.

引用

页码：83 / 90

页数：8

共 48 条

[1] Synthesis and characterization of new linear π-conjugated molecules containing bis(ethynylpyridine) units with a benzothiadiazole spacer [J].