Correlation between molecular structure and optical properties for the bis(2-(2-hydroxyphenyl)benzothiazolate) complexes

被引:17
作者
Xu Huixia [1 ,2 ]
Xu Bingshe [1 ,2 ]
Fang Xiaohong [1 ,3 ]
Chen Liuqing [1 ,2 ]
Wang Hua [1 ]
Hao Yuying [1 ]
机构
[1] Taiyuan Univ Technol, Minist Educ, Key Lab Interface Sci & Engn Adv Mat, Taiyuan 030024, Shanxi, Peoples R China
[2] Taiyuan Univ Technol, Coll Mat Sci & Engn, Taiyuan 030024, Shanxi, Peoples R China
[3] Taiyuan Univ Technol, Coll Min Engn, Taiyuan 030024, Shanxi, Peoples R China
关键词
Bis(2-(n-methyl-2; hydroxyphenyl)benzothiazolate) complex; Molecular structure; Electroluminescence; LIGHT-EMITTING MATERIAL; ELECTROLUMINESCENT PROPERTIES; ZINC(II); DIODES; PHOTOLUMINESCENCE; SUBSTITUTION; PERFORMANCE;
D O I
10.1016/j.jphotochem.2010.09.026
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A series of methyl-substituted bis(2-(hydroxyphenyl)benzothiazolate)zinc derivatives [Zn(n-MeBTZ)(2), n = 3 (1a), 4 (1b), 5 (1c)] were synthesized to investigate the correlation between molecular structures and optical properties. The results indicate that the blue-emitting (lambda(max) = 470 nm) complex 1b is monomer with a higher PL quantum efficiency than complexes 1,1a, 1c. Two green-emitting (lambda(max) = 507 nm and 499 nm) complexes 1a and 1c have special bi-molecular structures. The molecular structure for Zn(BTZ)(2) (complex 1) is dimer. Bilayer organic light-emitting devices were fabricated by using these complexes as emitting layer. The maximum emission wavelengths of the devices are in the range of 501-553 nm. The devices show turn-on voltages at 9.2, 12.7, 2.3 and 10.7 V for complex 1, 1a, 1b, and 1c, respectively. In particular, the device with complex 1b shows a higher brightness than the other complexes under the same conditions. (C) Elsevier B.V. All rights reserved.
引用
收藏
页码:108 / 116
页数:9
相关论文
共 19 条
[1]   Triplet level-dependent photoluminescence and photoconduction properties of π-conjugated polymer thin films doped by iridium complexes [J].
An, Jongdeok ;
Chang, Jungyun ;
Han, Jungwook ;
Im, Chan ;
Yu, Young-Jun ;
Choi, Dong Hoon ;
Jin, Jung-Il ;
Majima, Tetsuro .
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2008, 200 (2-3) :371-376
[2]   The path to ubiquitous and low-cost organic electronic appliances on plastic [J].
Forrest, SR .
NATURE, 2004, 428 (6986) :911-918
[3]   New, efficient electroluminescent materials based on organometallic Ir complexes [J].
Grushin, VV ;
Herron, N ;
LeCloux, DD ;
Marshall, WJ ;
Petrov, VA ;
Wang, Y .
CHEMICAL COMMUNICATIONS, 2001, (16) :1494-1495
[4]   White-light-emitting material for organic electroluminescent devices [J].
Hamada, Y ;
Sang, T ;
Fujii, H ;
Nishio, Y ;
Takanashi, H ;
Shibata, K .
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 1996, 35 (10B) :L1339-L1341
[5]   Effect of substitution of methyl groups on the luminescence performance of IrIII complexes:: Preparation, structures, electrochemistry, photophysical properties and their applications in organic light-emitting diodes (OLEDs) [J].
Jung, SG ;
Kang, YJ ;
Kim, HS ;
Kim, YH ;
Lee, CL ;
Kim, JJ ;
Lee, SK ;
Kwon, SK .
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, 2004, (17) :3415-3423
[6]   DFT study of bridge atom dependence of absorption and emitting wavelength of tridentate ligand chelates of aluminum [J].
Kan, Y ;
Wu, GS ;
Wang, LD ;
Qiu, Y .
INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY, 2004, 98 (03) :325-334
[7]   Design of conjugated molecular materials for optoelectronics [J].
Sano, T ;
Nishio, Y ;
Hamada, Y ;
Takahashi, H ;
Usuki, T ;
Shibata, K .
JOURNAL OF MATERIALS CHEMISTRY, 2000, 10 (01) :157-161
[8]   White organic light-emitting diodes based on spectral broadening in electroluminescence due to formation of interfacial exciplexes [J].
Singh, SP ;
Mohapatra, YN ;
Qureshi, M ;
Sundar Manoharan, S ;
Manoharan, SS .
APPLIED PHYSICS LETTERS, 2005, 86 (11) :1-3
[9]   Generation of blue light-emitting zinc complexes by band-gap control of the oxazolyl phenolate ligand system: Syntheses, characterizations, and organic light emitting device applications of 4-coordinated bis(2-oxazolylphenolate) zinc(II) complexes [J].
Son, Ho-Jin ;
Han, Won-Sik ;
Chun, Ji-Yun ;
Kang, Byoung-Kook ;
Kwon, Soon-Nam ;
Ko, Jaejung ;
Han, Su Jung ;
Lee, Chongmok ;
Kim, Sung Joo ;
Kang, Sang Ook .
INORGANIC CHEMISTRY, 2008, 47 (13) :5666-5676
[10]   ORGANIC ELECTROLUMINESCENT DIODES [J].
TANG, CW ;
VANSLYKE, SA .
APPLIED PHYSICS LETTERS, 1987, 51 (12) :913-915