Abstract
Detection of an analyte via supramolecular host-guest binding and quantum dot (QD)-based fluorescence resonance energy transfer (FRET) signal transduction mechanism is demonstrated. Surface patterns consisting of CdSe/ZnS QDs functionalized at their periphery with β-cyclodextrin (β-CD) were obtained by immobilization of the QDs from solution onto glass substrates patterned with adamantyl-terminated poly(propylene imine) dendrimeric "glue." Subsequent formation of host-guest complexes between vacant β-CD on the QD surface and an adamantyl-functionalized lissamine rhodamine resulting in FRET was confirmed by fluorescence microscopy, spectroscopy, and fluorescence lifetime imaging microscopy (FLIM).
Original language | English |
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Pages (from-to) | 2870-6 |
Number of pages | 7 |
Journal | Small |
Volume | 6 |
Issue number | 24 |
DOIs | |
Publication status | Published - 20 Dec 2010 |
Keywords
- Fluorescence Resonance Energy Transfer
- Microscopy, Fluorescence
- Quantum Dots
- beta-Cyclodextrins
- Journal Article
- Research Support, Non-U.S. Gov't