Sulfonated Dendrimers for the Application of Fuel Cell Membranes 1. Synthesis and Characterization of Sulfonated Dendrimers

  • 발행 : 2003.12.01

초록

1,3,5-Sustitituted polyphenylene type dendrimers were synthesized. The dendrimer was heated in cone. H$_2$SO$_4$ at 120$^{\circ}C$. The reaction mixture was precipitated to ether after simple filtration to get para-sulfonated dendrimer as the chief product. To give mechanical properties to the sulfonated dendrimer, it was partially cross-linked with phenyl ether in the medium of P$_2$O$\sub$5/ and CH$_3$SO$_3$H.

키워드

참고문헌

  1. T. M. Miller, T. X. Neenan, R. Zayas, H. E. Bair, 'Synthesis, and characterization of a series of monodisperse, 1,3,5-phenylene-based hydrocarbon dendrimers including $C_{276}H_{186}$ and their fluorinated analogs,' J. Am. chem. Soc., 114, 1018-1025 (1992)
  2. B. S. Furniss, A. J. Hannaford, P. W. G. Smith,and A. R. Tatchell, Vogel's Textbook of Practical Organic Chemistry, 5th ed., Thames Polytechnic, London, pp873-877 (1988)
  3. (a) P. E. Eaton, G. R. Carlson, and J. T. Lee, 'Phosphorus pentoxide-methanesulfonic acid. Convenient alternative to polyphosphoric acid,' J. Org. Chem., 38, 4071-4073 (1973)
  4. (b) M. Ueda, K. Uchiyama, T. Kano, 'A new synthesis of diaryl sulfones,' Synthesis, 323 (1984)
  5. H.-J. Kim, S. Y. Nam, M. H. Lin, and E.-M. Shin, 'Synthesis and Characterization of Sulfonic Acid Containing Polyimide Electrolyte Membranes(PEMs),' Macromol. Res. Accepted