کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
27087 | 44000 | 2013 | 6 صفحه PDF | دانلود رایگان |
A new strategy derived from the intramolecular charge transfer mechanism was employed to create a ratiometric sensing system for Zn2+ in aqueous solution by using sodium dodecyl sulfate (SDS) micelles as the scaffold. The amphiphilic carboxamidoquinoline-based sensor (AQZ2Cl) was simultaneously solubilized at different locations in the SDS micelle. Some AQZ2Cl molecules were adsorbed at the micelle–water interface and emitted a fluorescence-enhancing and red-shifted signal upon binding Zn2+. And the others were incorporated into the palisade layer of the micelle, in which the produced bands had no appreciable changes with the addition of Zn2+, thus acting as an internal standard and allowing AQZ2Cl as a ratiometric sensor for the detection of Zn2+.
Figure optionsDownload as PowerPoint slideHighlights
► A strategy for the ratiometric Zn2+ detection was described in the micellar solution.
► Two emission bands of the Zn2+-free and bound sensor can coexist in the SDS solution.
► The band of the Zn2+-free sensor acted as an internal standard during the titration.
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 257, 1 April 2013, Pages 20–25