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  • 1 Tokyo Polytechnic University 1583 Iiyama, Atsugi Kanagawa 243-0297 Japan
  • | 2 Rigaku Corp. 3-9-12 Matsubara, Akishima Tokyo 196-8666 Japan
  • | 3 Kanagawa University 2946 Tsuchiya, Hiratsuka Kanagawa 259-1293 Japan
  • | 4 Optrex Co. 1150 Hazawa Kanagawa, Yokohama 211-0863 Japan
  • | 5 Chinese Academy of Sciences Dalian Institute of Chemical Physics 457 Zhongshan Road Dalian 116023 China
  • | 6 SONY Institute of Higher Education 428 Nurumizu, Atsugi Kanagawa 243-8501 Japan
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Abstract  

The thermal change of the tris(8-hydroxyquinolinato)aluminum (Alq3) is currently investigated by XRD-DSC and TG. The phase transition of Alq3 from α-phase to γ-phase takes place at 643–669 K. A very sharp peak with the peak temperature at approx. 709 K is ascribed to the melting of the Alq3. The decomposition of the Alq3 was observed accompanied with the melting and evaporation at >703K. The effect of the atmospheres on the mass loss procedure was studied by TG. It was found that thermal process of Alq3 was strongly influenced by the partial pressure of water vapor in the atmosphere instead of oxygen.

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