A Macrocycle/Molecular-Clip Complex that Functions as a Quadruply Controllable Molecular Switch
Resource
Chemistry-A European Journal 12 (3): 865-876
Journal
Chemistry-A European Journal
Journal Volume
12
Journal Issue
3
Pages
865-876
Date Issued
2006
Date
2006
Author(s)
Chiang, Pinn-Tsong
Cheng, Pin-Nan
Lin, Chi-Feng
Liu, Yi-Hung
Lai, Chien-Chen
Peng, Shie-Ming
Abstract
Herein, we report the synthesis of a molecular clip with TTF side-walls and its binding behavior towards electron-deficient guests, namely the formation of macrocycle/molecular-clip supramolecular complexes in solution. Four different sets of external stimuli - the K+/[2.2.2]cryptand, NH4+/Et3N and (p-BrPh)3NSbCl 6Zn pairs, and heating/cooling cycles - control the movement of this molecular switch between its threaded and unthreaded states and provide color changes that are observable by the naked eye. This macrocycle/molecular-clip complex system can be considered not only as a quadruple-use molecular switch, but can also be operated by three of these stimuli as a three-input molecular NOR-functioning logic gate that may be monitored by UV-visible spectroscopy. © 2006 Wiley-VCH Verlag GmbH & Co. KGaA.
Type
journal article
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