213267-99-3Relevant academic research and scientific papers
CONTROLLING CONCENTRATIONS OF ANIONS WITH LIGHT USING ARYL-TRIAZOLE FOLDAMERS
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Page/Page column 15-16, (2012/03/11)
The invention provides novel aryl-triazole foldamers and methods for changing the concentration of anions using said foldamers.
Flipping the switch on chloride concentrations with a light-active foldamer
Hua, Yuran,Flood, Amar H.
supporting information; experimental part, p. 12838 - 12840 (2010/11/05)
Here we demonstrate a bioinspired system where light stimulus is used to trigger the wavelength-dependent release and then reuptake of chloride ions in nonaqueous solutions. A chiral aryl-triazole foldamer with two azobenzene end groups has been synthesized to define a folded binding pocket for chloride ions that unfolds with UV light to liberate the chloride. The trans-dominated helical foldamer becomes less stable upon photoisomerization to the cis forms. Simultaneously, the observed binding affinity shows an ～10-fold reduction from K = 3000 M-1 (MeCN, 298 K). Control of chloride levels using light is demonstrated by switching the conductivity of an electrolyte solution up and down.
