Expanded cyclophanes for switchable capture/release of metal complexes

This chemically redox-switchable system with luminescence outcomes can be regarded as an all-chemical RS Flip-Flop, integrating with a downstream PASS 1 gate or an IMPLICATION gate. Besides, two cyclophane receptors can also provide strong protection ability to Ru(II) polypyridine complexes from external environments in water. <br><br>In chapter 3, three analogous cyclophane receptors with tetramethylene chains are synthesized.

These smaller cyclophane receptors can selectively capture and release Ru(II)(bpy)3, but cannot bind Ru(II)(phen)3. The spectral results and luminescence quenching experiments indicate the complex between Ru(II)(bpy)3 and receptor is inclusive but off-central. <br><br>In chapter 4, the general conclusion of the research projects is given, with some discussion of further development. Chapter 5 presents the experimental procedures for synthesis work in chapters 2 and 3.