Construction of new cross-linked supramolecular polymer with FRET phenomenon based on oligo(p-phenylenevinylene)-linked pillar[5]arene dimer

<p>Cross-linked supramolecular polymers generally show distinct mechanical properties with intriguing functions, which have become one of the hot research topics in recent years. However, the cross-linked supramolecular polymers functionalised with fluorescence resonance energy transfer (FRET) properties have been rarely reported yet. Herein, a new cross-linked supramolecular polymer equipped with efficient FRET property was constructed successfully. The oligo(p-phenylenevinylene)-linked pillar[5]arene dimer (<b>PA-OPV</b>) functioned as a host and energy donor, while four pentanenitrile groups coupled porphyrin (<b>CN-Por</b>) acted as guest with energy acceptor. The supramolecular polymerisation and FRET properties were investigated by using NMR, viscosity, Fluorescence, UV–vis and SEM.</p> <p>A new cross-linked supramolecular polymer equipped with efficient FRET property was constructed successfully, the oligo(p-phenylenevinylene)-linked pillar[5]arene dimer (<b>PA-OPV</b>) functioned as both host and energy donor, while four pentanenitrile groups coupled porphyrin (<b>CN-Por</b>) acted as guest with energy acceptor. The supramolecular polymerization and FRET properties were investigated by using NMR, viscosity, Fluorescence, UV–vis and SEM.</p>