Self-Assembly of Cucurbit7uril Based Triangular 4Molecular Necklaces and Their Fluorescence Properties

摘要

Self-assembly of rigid-rod dipyridine ligand 1 with M(en)(NO3)2 (M = Pd, Pt) affords triangular (3, 5) and square (4, 6) supramolecular coordination complexes (SCCs). The binding affinity of 1 toward CB[n]-type containers results in the formation of triangular [4]molecular necklaces ([4]MNs, 7 – 10) by either one-pot or post complexation approaches as evidenced by ¹H NMR, diffusion ordered spectroscopy, and ESI-MS.