1,3-Bis(cyanomethoxy)calix[4]arene capped CdSe quantum dots for the fluorogenic sensing of fluorene
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Date
2017
Journal Title
Journal ISSN
Volume Title
Publisher
Royal Society of Chemistry
Abstract
Capping of 1,3-bis(cyanomethoxy)-tert-butylcalix[4]arene (CAD) onto CdSe quantum dots (QDs) was characterized by a fluorescence enhancement of the QDs (?em = 580 nm) upon surface interaction with the phenolic moiety of CAD. CAD@QD showed selective and sensitive 1.67 fold fluorescence enhancement in the presence of fluorene among fifteen PAHs. The fluorescence enhancement was characterized by monolayer adsorption of fluorene on to the surface of CAD@QD. The limit of detection for fluorene was observed to be 0.8 nM. This method was used and compared with detection of fluorene in spiked respirable dust (PM10) samples collected during an open biomass (stubble) burning event. ? The Royal Society of Chemistry.
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Keywords
Fluorescence, Nanocrystals, Calix[4]arenes, CdSe quantum dots, Fluorescence enhancement, Limit of detection, Monolayer adsorption, Phenolic moiety, Respirable dust, Surface interactions, Semiconductor quantum dots
Citation
Kumar, R., Arora, M., Jain, A. K., & Babu, J. N. (2017). 1,3-Bis(cyanomethoxy)calix[4]arene capped CdSe quantum dots for the fluorogenic sensing of fluorene. Rsc Advances, 7(23), 14015-14020. doi: 10.1039/c7ra00596b