Cucurbit[10]uril-mediated Supramolecular Assembly for Optically Tunable Dimers and Near White-light Emissive
Mao-Xia Yang1, Yang Luo1, Wei Zhang1
1Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang, 550025, P. R. China.
Abstract:
Cucurbit[10]uril (Q[10]), the cucurbit[n]uril with a large cavity, exhibits several new features in the development of the host-guest complex. Thus, based on Q[10] and π-conjugated molecule, oligo(p-phenylenevinylene) derivative (OPVCOOH), the host-guest complexes with three different interaction ratios of 1 : 2, 2 : 2, and 3 : 2 assemblies (Q[10]: guest) were fabricated. Depending on the host/guest ratio, the emission color of these complexes ranged from blue to yellow-green. The extra Fe2+ coordinated with a bare carboxyl group of the Q[10]-OPVCOOH (3 : 2) assembly, obstructing its rotaxane structure and forming Q[10]-OPVCOOH-Fe2+ assembly, which may be used as a coating for near-white LED bulbs.
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