Issue 10, 2011
From the journal:

Chemical Communications

Quantum dot photoluminescence lifetime-based pH nanosensor†

Maria J. Ruedas-Rama,*a   Angel Orte,a   Elizabeth A. H. Hall,b   Jose M. Alvarez-Peza  and  Eva M. Talaveraa  

* Corresponding authors

a Department of Physical Chemistry, Faculty of Pharmacy, University of Granada, Campus Cartuja, Granada, Spain
E-mail: mjruedas@ugr.es
Fax: +34 958 244090
Tel: +34 958 243825

b Institute of Biotechnology, University of Cambridge, Tennis Court Road, Cambridge,, UK
Tel: +44 1223 334149

Abstract

The first CdSe/ZnS quantum dot photoluminescence lifetime-based pH nanosensor has been developed. The average lifetime of mercaptopropionic acid-capped QD nanosensors showed a linear response in the pH range of 5.2–6.9. These nanosensors have been satisfactorily applied for pH estimation in simulated intracellular media, with high sensitivity and high selectivity toward most of the intracellular components.

Graphical abstract: Quantum dot photoluminescence lifetime-based pH nanosensor

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Article information

DOI
https://doi.org/10.1039/C0CC05252C
Article type
Communication
Submitted
29 Nov 2010
Accepted
22 Dec 2010
First published
17 Jan 2011

Chem. Commun., 2011,47, 2898-2900

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Quantum dot photoluminescence lifetime-based pH nanosensor

M. J. Ruedas-Rama, A. Orte, E. A. H. Hall, J. M. Alvarez-Pez and E. M. Talavera, Chem. Commun., 2011, 47, 2898 DOI: 10.1039/C0CC05252C

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