Sublimation point depression of tris(8-hydroxyquinoline)aluminum(III) (Alq3) by crystal engineering

被引：39
|
作者：
Lee, Tu
Lin, Ming Shiou
机构：
[1] Natl Cent Univ, Dept Chem & Mat Engn, Jhong Li City 320, Taiwan
[2] Natl Cent Univ, Inst Mat Sci & Engn, Jhong Li City 320, Taiwan
来源：
CRYSTAL GROWTH & DESIGN | 2007年 / 7卷 / 09期
关键词：
D O I：
10.1021/cg070226e
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
An initial solvent screening technique using 23 kinds of common organic solvents was utilized to engineer the polymorphisin and crystallinity of the solids of organic electroluminescent molecules of tris(8-hydroxyquinoline) aluminum(III) (Alq3). Pure AIq3 recrystallized from N,N-dimethyl formamide (DMF) by temperature cooling from 60 to 25 degrees C gave rodlike, semicrystalline solid materials with traces of delta-form having a sublimation point of only around 200 15 degrees C. The sublimation point depression of source materials could reduce the current evaporation temperature of organic light-emitting diodes (OLEDs) drastically. In addition, three new solvates of Alq3(C6H5NO2)(1/5)(H2O)(6), Alq3(CHCl3)(1/4), and Alq(3)(C4H8O2)(1/2) were discovered from the initial solvent screening.
引用
收藏
页码：1803 / 1810
页数：8
相关论文
共 50 条
  • [31] Correlating physical and chemical degradation in the performance of aluminum tris(8-hydroxyquinoline) (Alq3)-based OLEDs
    Mathai, MK
    Higginson, K
    Shin, E
    Papadimitrakopoulos, F
    JOURNAL OF MACROMOLECULAR SCIENCE-PURE AND APPLIED CHEMISTRY, 2004, A41 (12): : 1425 - 1435
  • [32] Observation of the temperature dependence of the dynamics of photoexcited states in pristine tris(8-hydroxyquinoline) aluminum(ALQ3)
    Priestley, R
    Walser, AD
    Dorsinville, R
    ELECTRICAL, OPTICAL, AND MAGNETIC PROPERTIES OF ORGANIC SOLID-STATE MATERIALS IV, 1998, 488 : 695 - 699
  • [33] Degradation in tris(8-hydroxyquinoline) aluminum (ALQ3)-based organic light emitting devices (OLEDs)
    Aziz, H
    Popovic, ZD
    Hu, NX
    DosAnjos, P
    Ioannidis, A
    ORGANIC LIGHT-EMITTING MATERIALS AND DEVICES IV, 2000, 4105 : 251 - 255
  • [34] Spectroscopic Evidence of Photodegradation by Ultraviolet Exposure of Tris(8-hydroxyquinoline) Aluminum (Alq3) Thin Films
    Brito, W. R.
    Araujo, G.
    Quirino, W. G.
    Legnani, C.
    Angulo, Y.
    Cremona, M.
    Rocco, M. L. M.
    JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY, 2010, 21 (12) : 2367 - 2372
  • [35] Characterization of tris (8-hydroxyquinoline) aluminum (Alq3) by energy-filtering transmission electron microscopy
    Yamanaka, M
    Kudo, J
    APPLIED PHYSICS LETTERS, 2003, 83 (24) : 5044 - 5046
  • [36] Refinement of the crystal structure of the δ-modification of tris(8-hydroxyquinoline)aluminum(III), δ-Al(C9H6NO)3, the blue luminescent Alq3
    Rajeswaran, M
    Blanton, TN
    Klubek, KP
    ZEITSCHRIFT FUR KRISTALLOGRAPHIE-NEW CRYSTAL STRUCTURES, 2003, 218 (04): : 439 - 440
  • [37] Correlated growth of organic material tris (8-hydroxyquinoline) aluminum (Alq3) and its relation to optical properties
    Kanchibotla, Bhargava R.
    Garre, K.
    Aurongzeb, Deeder
    Journal of Applied Physics, 2009, 106 (09):
  • [38] Correlated growth of organic material tris (8-hydroxyquinoline) aluminum (Alq3) and its relation to optical properties
    Kanchibotla, Bhargava R.
    Garre, K.
    Aurongzeb, Deeder
    JOURNAL OF APPLIED PHYSICS, 2009, 106 (09)
  • [39] Performance of Synthesized Metal Chelate Complex of Tris- (8-hydroxyquinoline) Aluminum (Alq3) in Fabrication of OLEDs
    Giri, Anjali
    Prasad, Ramesh
    Gupta, Nishant
    Anand, R. S.
    IMID/IDMC 2006: THE 6TH INTERNATIONAL MEETING ON INFORMATION DISPLAY/THE 5TH INTERNATIONAL DISPLAY MANUFACTURING CONFERENCE, DIGEST OF TECHNICAL PAPERS, 2006, : 1018 - 1023
  • [40] Current characteristics of pristine and tetrathianaphthacene-doped tris(8-hydroxyquinoline) aluminum (ALQ3) thin films
    Wang, Suidong
    Kanai, Kaname
    Kawabe, Eiji
    Ouchi, Yukio
    Seki, Kazuhiko
    MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 2006, 455 : 339 - 346
12345