Quantum dot photoluminescence lifetime-based pH nanosensor.
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.
Department of Physical Chemistry, Faculty of Pharmacy, University of Granada, Campus Cartuja, 18071, Granada, Spain. mjruedas@ugr.es
Maria J
MJ
Ruedas-Rama
Angel
A
Orte
Elizabeth A H
EA
Hall
Jose M
JM
Alvarez-Pez
Eva M
EM
Talavera
D000818:Animals; D001672:Biocompatible Materials / Q000737:chemistry; D019187:Cadmium Compounds / Q000737:chemistry; D002417:Cattle; D002623:Chemistry Techniques, Analytical / Q000295:instrumentation*; D006863:Hydrogen-Ion Concentration; D042541:Intracellular Space / Q000737:chemistry; D008163:Luminescent Measurements; D036103:Nanotechnology / Q000379:methods*; D045663:Quantum Dots; D018036:Selenium Compounds / Q000737:chemistry; D012995:Solubility; D013440:Sulfides / Q000737:chemistry; D013997:Time Factors; D014867:Water / Q000737:chemistry; D017967:Zinc Compounds / Q000737:chemistry
D001672:Biocompatible Materials; D019187:Cadmium Compounds; D018036:Selenium Compounds; D013440:Sulfides; D017967:Zinc Compounds; D014867:Water; C058667:cadmium selenide; C031238:zinc sulfide