Please use this identifier to cite or link to this item:
https://www.um.edu.mt/library/oar/handle/123456789/69928| Title: | Luminescent ‘on-off’ CdSe/ZnS quantum dot chemodosimeter for hydroxide based on photoinduced electron transfer from a carboxylate moiety |
| Authors: | Gauci, Lara A. Kelland, Lindsay G. Magri, David C. |
| Keywords: | Energy transfer Luminescence Electron mobility Quantum dots |
| Issue Date: | 2013 |
| Publisher: | Springer Science+Business Media New York |
| Citation: | Gauci, L. A., Kelland, L. G., & Magri, D. C. (2013). Luminescent ‘on-off’ CdSe/ZnS quantum dot chemodosimeter for hydroxide based on photoinduced electron transfer from a carboxylate moiety. Journal of Fluorescence, 23(4), 793-798. |
| Abstract: | A CdSe-ZnS quantum dot (QD) has been surface functionalised by a place exchange reaction with pmercaptomethyl benzoate synthesized by a three-step procedure. The resulting lumophore-spacer-receptor QD-conjugate was characterized by IR, UV-visible and fluorescence spectroscopy. The emission profile of the QD reveals a narrow emission peak centred at 542 nm. Addition of hydroxide to the solution containing the QD-conjugate results in quenching of the original fluorescence, which is attributed to a photoinduced electron transfer reaction from the electron-rich benzoate moiety to the QD valence band. This is the first reported example of fluorescent quenching of a CdSe-ZnS QD luminescence by an aryl carboxylate moiety |
| URI: | https://www.um.edu.mt/library/oar/handle/123456789/69928 |
| Appears in Collections: | Scholarly Works - FacSciChe |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 2013 J Fluoresence.pdf Restricted Access | 338.77 kB | Adobe PDF | View/Open Request a copy |
Items in OAR@UM are protected by copyright, with all rights reserved, unless otherwise indicated.