A macrocycle/molecular-clip complex that functions as a quadruply controllable molecular switch.
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, NH(4) (+)/Et(3)N and (p-BrPh)(3)NSbCl(6)/Zn 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.
Chiang
Pinn-Tsong
PT
Department of Chemistry, National Taiwan University, Taipei, ROC.
Cheng
Pin-Nan
PN
Lin
Chi-Feng
CF
Liu
Yi-Hung
YH
Lai
Chien-Chen
CC
Peng
Shie-Ming
SM
Chiu
Sheng-Hsien
SH
D043844:Crown Ethers / Q000737:chemistry*; D008956:Models, Chemical; D008968:Molecular Conformation; D013056:Spectrophotometry, Ultraviolet
D043844:Crown Ethers