Sunday, March 24, 2013

Precision polymers, dendrimers

Extending the Limits of Precision Polymer Synthesis: Giant Polyphenylene Dendrimers in the Mega Dalton Mass Range Approaching Structural Perfection

Thi-Thanh-Tam Nguyen , Martin Baumgarten , Ali Rouhanipour , Hans Joachim Raeder , Ingo Lieberwirth , and Klaus Mullen

This paper reports the synthesis and characterization of the first megadalton polyaromatic dendrimer (and earlier generation dendrimers).  They got beautiful, albeit broad, MALDI spectra, narrow GPC traces (remarkably, even for late-generation species), and TEM images of these gigantic molecules.  The synthesis was achieved via D.A. chemistry/deprotection of alkynes.

Abstract Image

1 comment:

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