Beta-cyclodextrin-modified CdSe/ZnS quantum dots for sensing and chiroselective analysis.
Beta-cyclodextrin (beta-CD)-functionalized CdSe/ZnS quantum dots (QDs) are used for optical sensing and chiroselective sensing of different substrates using a fluorescence resonance energy transfer (FRET) or an electron transfer (ET) mechanisms. The FRET between the QDs and Rhodamine B incorporated in the beta-CD receptor sites is used for the competitive analysis of adamantanecarboxylic acid and of p-hydroxytoluene. Also, the dye-incorporated beta-CD-modified QDs are used for the chiroselective optical discrimination between D,L-phenylalanine and D,L-tyrosine. The receptor-functionalized QDs are also implemented for the optical detection of p-nitrophenol using an ET quenching route.
Institute of Chemistry, The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel.
Ronit
R
Freeman
Tali
T
Finder
Lily
L
Bahshi
Itamar
I
Willner
D000218:Adamantane / Q000031:analogs & derivatives / Q000737:chemistry; D019187:Cadmium Compounds / Q000737:chemistry*; D004579:Electron Transport; D031541:Fluorescence Resonance Energy Transfer; D010649:Phenylalanine / Q000737:chemistry; D045663:Quantum Dots; D018036:Selenium Compounds / Q000737:chemistry*; D013237:Stereoisomerism; D013440:Sulfides / Q000737:chemistry*; D014050:Toluene / Q000737:chemistry; D014443:Tyrosine / Q000737:chemistry; D017967:Zinc Compounds / Q000737:chemistry*; D047392:beta-Cyclodextrins / Q000737:chemistry*
D019187:Cadmium Compounds; D018036:Selenium Compounds; D013440:Sulfides; D017967:Zinc Compounds; D047392:beta-Cyclodextrins; D014050:Toluene; D014443:Tyrosine; D010649:Phenylalanine; C012698:adamantanecarboxylic acid; C058667:cadmium selenide; C031215:betadex; C031238:zinc sulfide; D000218:Adamantane