A stimuli-responsive supramolecular assembly between inverted cucurbit[7]uril and hemicyanine dye?
New Journal of Chemistry Pub Date: 2018-08-08 DOI: 10.1039/C8NJ03344G
Abstract
The effect of inverted curcurbit[7]uril (iQ[7]) on the binding mode of 2-(4-(dimethylamino)styryl)-1-methylpyridinium (DASPMI) was determined in this study. A large fluorescence enhancement of DASPMI was realized by the formation of an inclusion complex with iQ[7]. A 1?:?1 inclusion complex was determined through UV absorption and fluorescence spectroscopies, 1H nuclear magnetic resonance (NMR) spectroscopy, matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS), and isothermal titration calorimetry (ITC) at different pH values. In addition, we also devised a method for the controlled release of DASPMI from the iQ[7] macrocycle by adding α,α′-diamino-p-xylene.
![Graphical abstract: A stimuli-responsive supramolecular assembly between inverted cucurbit[7]uril and hemicyanine dye](http://scimg.chem960.com/usr/1/C8NJ03344G.jpg)
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Journal Name：New Journal of Chemistry
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CAS no.: 89640-58-4
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