Artículos
Título:
Polyfunctional MDI Oligomers Through Dendrimerization
Autor/es:
MARISA MARTINELLI; MARCELO CALDERÓN; ESTEBAN RODRÍGUEZ,; JUAN J. FREIRE; MIRIAM STRUMIA
Revista:
EUROPEAN POLYMER JOURNAL
Referencias:
Año: 2007 vol. 43 p. 1978 - 1978
Resumen:
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An accessible pathway to synthesize dendronized MDI oligomers was studied. Two dendrons
bearing -CN and -t-But functional groups in the periphery were obtained following the synthetic strategy
proposed by Newkome et al. Dendrons with one focal point were converted from nitro into amino precursors
and used as modifiers in the preparation of new functionalized materials. The coupling reaction of dendrons
on oligomers with isocyanate groups was carried out through an easy and quick procedure. The
dendronized oligomers showed conformation changes according to the polarity of the solvents, allowing a
prediction of a "stimuli-responsive" behavior.