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a series of phenylethynyl-endcappedoligomides with low melt viscosities and high tg values were prepared.The oligomides were mixtures of phenylethynyl-endcapped imide oligomers with different degrees of polymerization (dp =0, 1, 2, 3, 4), corresponding to the molecular weights (mn) of 737 to 2787 determined by maldi-tof.