Anion Triggered Supramolecular Topological Change from a Coordination Polymer to a Dumbbell

저자

전*진

게재저널

http://new.kcsnet.or.kr/

키워드

Molecular dumbbell, Supramolecule, Topological change, Self-assembly

개요

Supramolecular self-assembly is a bottom-up approach leading to nano-structures with well-defined molecular arrangements, and has created a huge number of coordination polymers and cages in the past decades.1-3
At the same time, many supramolecular dumbbells produced by self-assembly processes have also been documented.4 Signal changes or topological changes by a particular guest increases the utility of supramolecules in molecular sensing and molecular machine chemistry.5,6 Our laboratory reported previously the studies on the molecular recognition of Inorganic Tennis Balls (ITBs) and its extended structures produced by bridging it with 4,4'-bipyridine (bpy).7 The selfassembly of (dach)PtII(DTEYM) with Cu(OTf)2 in methanol gives the ITB-14+, [[{(dach)Pt(DTEYM)}2Cu]2]4+, with
interior empty cavity, which is known to encapsulate anions such as Cl?, NO3
? and ClO4 ?.8 In addition, the ITB-14+ has two exterior pockets recognizing pyridine-like molecules, and thus bridging of ITB-14+ with bpy leads to 1-D array, (bpy-ITB-14+).7 Herein we report the transformation of the 1-D array
to molecular dumbbell triggered by the presence of a particular anion, perchlorate. The crystallization of (dach)PtII(DTEYM) and Cu(ClO4)

첨부파일

• 35. 전무진_Bulletin of the Korean Chemical Society(SCI).pdf [607,265 byte]

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