Reduced fluorescence quenching of cyclodextrin-acetylene dye rotaxanes |
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| Authors: | Park Jong S Wilson James N Hardcastle Kenneth I Bunz Uwe H F Srinivasarao Mohan |
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| Institution: | School of Polymer, Textile and Fiber Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA. |
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| Abstract: | An acetylene dye rotaxane with alpha-CD has been synthesized using the Heck-Cassar-Sonogashira-Hagihara-type reaction in aqueous solution. Free dye with tetracarboxylic acids is found to be highly sensitive to various metal ions, showing high Stern-Volmer constants, KSV. As CD encapsulation protects and stabilizes the threaded chromophore against an outside quencher, metal-insensitive biological tags are an obvious application for this class of molecules. |
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