Reversible Mechanochemistry of a PdII Coordination Polymer

Authors

  • Jos M. J. Paulusse,

    1. Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands, Fax: (+31) 40-2472-655
    Search for more papers by this author
  • Rint P. Sijbesma

    1. Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands, Fax: (+31) 40-2472-655
    Search for more papers by this author

  • This work was supported by the Netherlands Research School Combination—Catalysis. The authors thank M. W. A. Kuijpers and Dr. M. F. Kemmere for helpful discussions and assistance with sonication experiments. We thank Dr. K. Pieterse for preparing graphics.

Abstract

original image

Breaking up and making up: The ultrasonic cleavage of high-molecular-weight linear coordination polymers of phosphane telechelic polytetrahydrofuran and palladium dichloride in dilute solution is a reversible process (see picture). Sonication for 1 h led to a decrease in the weight-averaged molecular weight of the polymer from 1.7×105 to 1.0×105 g mol−1. Upon leaving the sample to stand for 24 h, the original molecular weight was completely restored.

Ancillary