Our group has been developing fullerene hosts based on a calix[5]arene. During the course of these studies, we found that covalently linked double-calix[5]arenes encapsulate fullerenes in their cavities to form 1:1 host-guest complexes. The molecular association between a C60 molecule and a double-calix[5]arene is strong enough to create a supramolecular polymeric array of [60]fullerenes. We set out to make use of this unique host-guest motif as a supramolecular cross-linkage between polymer chains.In this presentation we report supramolecular cross-linking of a polyphenylacetylene by C60-calix[5]arene-interaction.1 A polyphenylacetylene possessing C60 moieties has been cross-linked by a homoditopic tetrakiscalix[5]arene host via formation of a specific supramolecular complex. This noncovalent interaction leads to an increase of the molecular weight of the polymer and produces morphological changes upon addition of the host. Reference(1) Haino, T.; Hirai, E.; Fujiwara, Y.; Kashihara, K. Angew. Chem. Int. Ed. 2010  , 49, 7899�7903.

Cross-linking of C<sub>60</sub>-tagged polyphenylacetylene by molecular recognition

243rd National Meeting (2012)

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Cross-linking of C60-tagged polyphenylacetylene by molecular recognition

Cross-linking of C₆₀-tagged polyphenylacetylene by molecular recognition