1 research outputs found
Dodecaborate-Functionalized Anchor Dyes for Cyclodextrin-Based Indicator Displacement Applications
A new
type of water-soluble anchor dyes, that is, dyes which carry
an auxiliary unit for strong binding to macrocyclic host molecules,
has been synthesized. It consists of 7-nitrobenzofurazan (NBD) as
a dye and the dodecaborate cluster (B<sub>12</sub>H<sub>11</sub>R)
as a dianionic, globular, and purely inorganic anchoring group for
cyclodextrins (<i>K</i><sub>a</sub> > 10<sup>5</sup> M<sup>–1</sup>). The synthesized dodecaborate-substituted dyes show
marked changes in their photophysical properties (UV–vis and
fluorescence) upon complexation with cyclodextrins (β-CD and
γ-CD), such that the resulting host·dye complexes (1:1
stoichiometry) present sensitive reporter pairs for indicator displacement
applications