Host-guest assembly of squaraine dye in cucurbit[8]uril: its implication in fluorescent probe for mercury ions
Yongqian Xu1, Matthew J Panzner, Xiaopeng Li
1Department of Chemistry & Maurice Morton Institute of Polymer Science, The University of Akron, Akron, OH 44325, USA.
Abstract:
The binding interactions between SQ2 squaraine dye and cucurbit[8]uril (CB8) effectively removes the aggregation of SQ2 in aqueous solution by forming a 1 : 1 inclusion complex. The resulting SQ2.CB8 complex exhibits highly selective fluorescence quenching by Hg(2+) ions, as a result of the synergetic binding between CB8, SQ2 and metal cation.
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