Multicomponent Assembled Systems Based on Platinum(II) Terpyridine Complexes

• DOI: 10.1021/acs.accounts.8b00340
• Publication Date: 2018-10-24T15:35:04Z
• Authors: Zhao Gao; Yifei Han; Zongchun Gao; Feng Wang
• Keywords: Terpyridine

Platinum(II) terpyridine complexes have received tremendous attention in recent years because of their square-planar geometry and fascinating photophysics. Bottom-up self-assembly represents an intriguing approach to construct well-ordered supramolecular architectures with tunable optical electronic properties. Until now, much effort has been devoted the fabrication monocomponent platinum(II) terpyridine-based assemblies. The next step is develop multicomponent coassembled systems via combination other π-organic -organometallic molecules. implementation electron/energy transfer processes renders advanced functionality resulting coassemblies. For discrete architectures, a feasible protocol preorganized molecular tweezers macrocycles involvement as panel units. In view planar surface positively charged character, such receptors are capable encapsulating electron-rich polyaromatic hydrocarbons organometallic guests donor-acceptor charge-transfer and/or metal-metal interactions. Intermolecular hydrogen bonds can be further incorporated between receptor hydrocarbon guests, giving rise strengthened binding affinity sensitive stimuli-responsiveness. On this basis, multilayer stacks obtained precise control over number pincers, which feature enhanced complexation strength superior functionality. Moreover, more suitable for guest accommodation than corresponding light definite size constrained environment. Stimuli-responsive elements conveniently implemented into rigid spacers macrocyclic receptors, facilitating capture release sandwiched highly controlled manner. hand, long-range-ordered polymers successfully fabricated linear, hyperbranched, cross-linked topologies by employing tweezers/guest recognition motifs non-covalent connecting unit. degree polymerization donor-acceptor-type efficiently modulated incorporating intermolecular complementary An alternative toward extended assemblies mimic structure Magnus' green salt. A delicate balance driving forces homo- heterocomplexation deeper understanding thermodynamic kinetic behaviors play decisive roles final arrangement structures. Overall, coassembly nanostructures would open up new avenue functional materials that especially promising sensing, optoelectronics, catalytic applications.