New luminescent 1,2,4-triazole/thiophene alternating copolymers: Synthesis, characterization, and optical properties

被引：23

作者：

Yasuda, Takuma ^{[1
]}

Namekawa, Kimiyasu ^{[1
]}

Iijima, Takayuki ^{[1
]}

Yamamoto, Takakazu ^{[1
]}

机构：

[1] Tokyo Inst Technol, Chem Resources Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan

来源：

POLYMER | 2007年 / 48卷 / 15期

关键词：

pi-conjugated polymer; 1,2,4-triazole; optical properties;

D O I：

10.1016/j.polymer.2007.05.061

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

New five-membered ring heteroaromatic copolymers composed of 1-alkyl-1H-1,2,4-triazole and thiophene or bithiophene units were prepared by palladium-catalyzed polycondensation. The copolymers were soluble in organic solvents, and showed number-average molecular weights of 6200-23,700 in the GPC analysis. NMR spectroscopy revealed that the copolymers had a regio-random molecular structure. The optical properties, as well as the electrochemical properties, of the copolymers in solutions and films were determined. The polymers exhibited blue photoluminescence (PL) with an emission peak at about 420 nm and quantum yields of 36-43% in solutions, and the PL peak shifted to 470-480 nm in films. X-ray diffraction data suggested that the polymers formed a pi-stacked structure in solid state. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：4375 / 4384

页数：10

共 49 条

[1] Synthesis and chemical properties of new soluble aromatic polyketones with cross π-conjugated systems [J].

Abe, Masahiro ;

Yamamoto, Takakazu .

SYNTHETIC METALS, 2006, 156 (21-24) :1390-1395

[2] ORGANIC ELECTROLUMINESCENT DEVICE HAVING A HOLE CONDUCTOR AS AN EMITTING LAYER [J].

ADACHI, C ;

TSUTSUI, T ;

SAITO, S .

APPLIED PHYSICS LETTERS, 1989, 55 (15) :1489-1491

[3] High-efficiency organic electrophosphorescent devices with tris(2-phenylpyridine)iridium doped into electron-transporting materials [J].

Adachi, C ;

Baldo, MA ;

Forrest, SR ;

Thompson, ME .

APPLIED PHYSICS LETTERS, 2000, 77 (06) :904-906

[4] Electrochemical and optical studies of the band gaps of alternating polyfluorene copolymers [J].

Admassie, Shimelis ;

Inganas, Olle ;

Mammo, Wendimagegn ;

Perzon, Erik ;

Andersson, Mats R. .

SYNTHETIC METALS, 2006, 156 (7-8) :614-623

[5]

[Anonymous], 1997, HDB ORGANIC CONDUCTI

[6]

[Anonymous], 1982, CONT HETEROCYCLIC CH

[7] SYNTHESIS OF 3,2'-5',3'-TERTHIOPHENE AND OTHER TERTHIOPHENES BY THE THIOPHENECARBOXALDEHYDE-]ETHYNYLTHIOPHENE-]DITHIENYLBUTADIYNE ROUTE [J].

BENY, JP ;

DHAWAN, SN ;

KAGAN, J ;

SUNDLASS, S .

JOURNAL OF ORGANIC CHEMISTRY, 1982, 47 (11) :2201-2204

[8] Electronic properties and field-effect transistors of thiophene-based donor-acceptor conjugated copolymers [J].

Champion, RD ;

Cheng, KF ;

Pai, CL ;

Chen, WC ;

Jenekhe, SA .

MACROMOLECULAR RAPID COMMUNICATIONS, 2005, 26 (23) :1835-1840

[9] REGIOCONTROLLED SYNTHESIS OF POLY(3-ALKYLTHIOPHENES) MEDIATED BY RIEKE ZINC - THEIR CHARACTERIZATION AND SOLID-STATE PROPERTIES [J].

CHEN, TA ;

WU, XM ;

RIEKE, RD .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1995, 117 (01) :233-244

[10] Blue emission of a soluble poly(p-phenylene) with a cross-conjugated bisimidazole-based chromophore [J].

Dierschke, Frank ;

Muellen, Klaus .

MACROMOLECULAR CHEMISTRY AND PHYSICS, 2007, 208 (01) :37-43

← 1 2 3 4 5 →