3,12-Dimethoxy-7,8-dicyano-[5]helicene as a novel emissive material for organic light-emitting diode

被引：101

作者：

Sahasithiwat, Somboon ^{[1
]}

Mophuang, Tipwan ^{[1
]}

Menbangpung, Laongdao ^{[1
]}

Kamtonwong, Siriporn ^{[1
]}

Sooksimuang, Thanasat ^{[1
]}

机构：

[1] Natl Met & Mat Technol Ctr MTEC, Klongluang 12120, Pathumthani, Thailand

来源：

SYNTHETIC METALS | 2010年 / 160卷 / 11-12期

关键词：

5]Helicene; Organic light-emitting diode; Electroluminescence; CIRCULAR-DICHROISM; BLUE; LUMINESCENCE; FLUORESCENCE;

D O I：

10.1016/j.synthmet.2010.02.039

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

3,12-Dimethoxy-7,8-dicyano-[5]helicene (DDH) was introduced as a novel emissive material for organic light-emitting diode. It shown good thermal stability and no glass transition temperature was observed. The LUMO, HOMO and energy band gap (-3.3, -5.9 and 2.6 eV) of this compound were determined using cyclic voltammetry technique. Fluorescence quantum yield of DDH in chloroform is 0.27. The turn-on voltage of OLEDs with a configuration of ITO/PEDOT:PSS/DDH/Ca/Al was not a function of DDH thickness in a range of 60-100 nm. The best OLED, in which DDH thickness was 100 nm, exhibited a turn-on voltage of 3.7V with maximum brightness of 1587 cd/m(2) at 8.0 V and 281 mA/cm(2). The maximum current efficiency and power efficiency were 0.64 cd/A and 0.291m/W, respectively. The CIE coordinates of the OLED electroluminescence, however, appeared to depend on the applied voltage as they were (0.38,0.47) at 5.0 V and (0.51,0.44) at 8.0 V. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：1148 / 1152

页数：5

共 33 条

[1]

Beaupré S, 2002, ADV FUNCT MATER, V12, P192, DOI 10.1002/1616-3028(200203)12:3<192::AID-ADFM192>3.0.CO

[2]

2-U

[3]

BIRKS JB, 1976, CHEM PHYS LETT, V43, P33, DOI 10.1016/0009-2614(76)80750-6

[4] Theoretical and experimental investigation of electric field induced second harmonic generation in tetrathia[7]helicenes [J].

Bossi, Alberto ;

Licandro, Emanuela ;

Maiorana, Stefano ;

Rigamonti, Clara ;

Righetto, Stefania ;

Stephenson, G. Richard ;

Spassova, Milena ;

Botek, Edith ;

Champagne, Benoit .

JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (21) :7900-7907

[5] CHAIN-LENGTH DEPENDENCE OF ELECTRONIC AND ELECTROCHEMICAL PROPERTIES OF CONJUGATED SYSTEMS - POLYACETYLENE, POLYPHENYLENE, POLYTHIOPHENE, AND POLYPYRROLE [J].

BREDAS, JL ;

SILBEY, R ;

BOUDREAUX, DS ;

CHANCE, RR .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1983, 105 (22) :6555-6559

[6] Improving the efficiency of light-emitting diode based on a thiophene polymer containing a cyano group [J].

Cheylan, S. ;

Bolink, H. J. ;

Fraleoni-Morgera, A. ;

Puigdollers, C. J. ;

Voz, C. ;

Mencarelli, I. ;

Setti, L. ;

Alcubilla, R. ;

Badenes, G. .

ORGANIC ELECTRONICS, 2007, 8 (06) :641-647

[7] New conjugated materials containing cyano substituents for light-emitting diodes [J].

Cirpan, A ;

Rathnayake, HP ;

Gunbas, G ;

Lahti, PM ;

Karasz, FE .

SYNTHETIC METALS, 2006, 156 (2-4) :282-286

[8] Blue phosphorescence from mixed cyano-isocyanide cyclometalated iridium(III) complexes [J].

Dedeian, Kenneth ;

Shi, Jianmin ;

Forsythe, Eric ;

Morton, David C. ;

Zavalij, Peter Y. .

INORGANIC CHEMISTRY, 2007, 46 (05) :1603-1611

[9] Syntheses of [5]-helicene by McMurry or carbenoid couplings [J].

Dubois, F ;

Gingras, M .

TETRAHEDRON LETTERS, 1998, 39 (28) :5039-5040

[10] Circularly polarized luminescence from bridged triarylamine helicenes [J].

Field, JE ;

Muller, G ;

Riehl, JP ;

Venkataraman, D .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (39) :11808-11809

← 1 2 3 4 →