Pb2+-Containing Metal-Organic Rotaxane Frameworks (MORFs)

Abstract

The metal-organic rotaxane framework (MORF) structures with the advantage of mechanically interlocking molecules (MIMs) have attracted intense interest from the chemical community. In this study, a set of MORFs (i.e., MORF-Pb-1 and MORF-Pb-2) are constructed using Pb2+, a tetraimidazolium macrocycle (Texas-sized molecular box; 14+), and aromatic dicarboxylate (p-phthalate dianions (PTADAs; 2) or 2,6-naphthalene dicarboxylate dianions (3)) via a one-pot three-layer diffusion protocol. In particular, an unusual Pb…Pb weak interaction was shown in MORF-Pb-1 (charactered with distance of 3.656 Å).

Mechanically interlocked molecules in metal–organic frameworks

“…Recently, Gong and co-workers described a set of MORFs ( MORF-Pb-1 and MORF-Pb-2 ) constructed from TSMB 4+ , BDC 2− and NDC 2− dianions and Pb( ii ) cations. 71 Unusual Pb⋯Pb weak interactions were found in the former.…”

Rotaxane nanomachines in future molecular electronics

“…Many research studies about [2]rotaxane and its applications to moletronics have been reported. 52–166…”