Polymers from coumarines: 4. Design and synthesis of novel hyperbranched and comb-like coumarin-containing polymers
Por:
Fomine S., Rivera E., Fomina L., Ortiz A., Ogawa T.
Publicada:
1 ene 1998
Resumen:
Novel monomers containing coumarin groups [2-(7-Cumarinyloxy)0ethoxy]dimethyl terephthalate and [6-(3-carboxy)coumarinyl] diacetylhydroquinone were synthesized and polymerized by high temperature polycondensation to give hyperbranched and comb-like coumarin-containing polymers. All polymers were completely soluble in chlorinated aliphatic hydrocarbons and showed Mn in the range of 2000-50 000 and gave film of good optical quality on casting from solution. All polymers except one were amorphous with Tg in the range of 100-230°C and thermostability of 370-415°C. All polymers were found to be blue emitters emitting light in the range 450-492 nm. © 1998 Elsevier Science Ltd. All rights reserved.
Filiaciones:
Fomine S.:
Inst. de Invest. en Materiales, Univ. Nac. Auton. de México, Apartado Postal 70-360, CU, Coyoacan, Mexico DF 04510, Mexico
Rivera E.:
Inst. de Invest. en Materiales, Univ. Nac. Auton. de México, Apartado Postal 70-360, CU, Coyoacan, Mexico DF 04510, Mexico
Fomina L.:
Inst. de Invest. en Materiales, Univ. Nac. Auton. de México, Apartado Postal 70-360, CU, Coyoacan, Mexico DF 04510, Mexico
Ortiz A.:
Inst. de Invest. en Materiales, Univ. Nac. Auton. de México, Apartado Postal 70-360, CU, Coyoacan, Mexico DF 04510, Mexico
Ogawa T.:
Inst. de Invest. en Materiales, Univ. Nac. Auton. de México, Apartado Postal 70-360, CU, Coyoacan, Mexico DF 04510, Mexico
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