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Issue 18, 2018
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A stimuli-responsive supramolecular assembly between inverted cucurbit[7]uril and hemicyanine dye

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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

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Publication details

The article was received on 05 Jul 2018, accepted on 07 Aug 2018 and first published on 08 Aug 2018


Article type: Paper
DOI: 10.1039/C8NJ03344G
Citation: New J. Chem., 2018,42, 15420-15426
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    A stimuli-responsive supramolecular assembly between inverted cucurbit[7]uril and hemicyanine dye

    Z. Gao, J. Kan, Z. Tao, B. Bian and X. Xiao, New J. Chem., 2018, 42, 15420
    DOI: 10.1039/C8NJ03344G

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