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Multicomponent Supramolecular Systems: Self‐Organization in Coordination‐Driven Self‐Assembly
Authors:Yao‐Rong Zheng  Hai‐Bo Yang Prof?Dr  Koushik Ghosh  Liang Zhao Dr  Peter?J Stang Prof?Dr
Institution:1. Department of Chemistry, University of Utah, 315 South 1400 East, RM, 2020, Salt Lake City, Utah, 84112 (USA), Fax: (+1)?801‐581‐8433;2. Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, 3663 N. Zhongshan Road, Shanghai, 200062 (China), Fax: (+86)?21‐62235137
Abstract:The self‐organization of multicomponent supramolecular systems involving a variety of two‐dimensional (2 D) polygons and three‐dimensional (3 D) cages is presented. Nine self‐organizing systems, SS1 – SS9 , have been studied. Each involves the simultaneous mixing of organoplatinum acceptors and pyridyl donors of varying geometry and their selective self‐assembly into three to four specific 2 D (rectangular, triangular, and rhomboid) and/or 3 D (triangular prism and distorted and nondistorted trigonal bipyramidal) supramolecules. The formation of these discrete structures is characterized using NMR spectroscopy and electrospray ionization mass spectrometry (ESI‐MS). In all cases, the self‐organization process is directed by: 1) the geometric information encoded within the molecular subunits and 2) a thermodynamically driven dynamic self‐correction process. The result is the selective self‐assembly of multiple discrete products from a randomly formed complex. The influence of key experimental variables ‐ temperature and solvent ‐ on the self‐correction process and the fidelity of the resulting self‐organization systems is also described.
Keywords:cage compounds  self‐assembly  supramolecular chemistry  supramolecular polygons
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