Abstract
Language | English |
---|---|
Pages | 777-782 |
Journal | Journal of Fluorescence |
Volume | 19 |
Issue number | 5 |
DOIs | |
Publication status | Published - Sep 2009 |
Fingerprint
Cite this
}
Fluorescent Recognition of Potassium and Calcium Ions Using Functionalised CdSe/ZnS Quantum Dots. / Singh, Narinder; Mulrooney, Ray C.; Kaur, Navneet; Callan, John F.
In: Journal of Fluorescence, Vol. 19, No. 5, 09.2009, p. 777-782.Research output: Contribution to journal › Article
TY - JOUR
T1 - Fluorescent Recognition of Potassium and Calcium Ions Using Functionalised CdSe/ZnS Quantum Dots
AU - Singh, Narinder
AU - Mulrooney, Ray C.
AU - Kaur, Navneet
AU - Callan, John F.
PY - 2009/9
Y1 - 2009/9
N2 - Schiff base receptor 1a has been synthesised and attached to the surface of preformed CdSe/ZnS Quantum Dots (QDs) to form QD-conjugate 2a. While 1a was determined to be selective for Mg2+, 2a demonstrated selectivity for both K+ and Ca2+ when tested against a range of physiologically and environmentally relevant cations by changes in the fluorescence spectra. Thus, the nanoparticle surface functions as a scaffold for the organisation of receptors enabling semi-selective binding. The fluorescence response was shown to be linear between 15-50 mu M for K+ and 2-35 mu M for Ca2+. It was also demonstrated that 2a could measure both K+ and / or Ca2+ in solutions containing both ions.
AB - Schiff base receptor 1a has been synthesised and attached to the surface of preformed CdSe/ZnS Quantum Dots (QDs) to form QD-conjugate 2a. While 1a was determined to be selective for Mg2+, 2a demonstrated selectivity for both K+ and Ca2+ when tested against a range of physiologically and environmentally relevant cations by changes in the fluorescence spectra. Thus, the nanoparticle surface functions as a scaffold for the organisation of receptors enabling semi-selective binding. The fluorescence response was shown to be linear between 15-50 mu M for K+ and 2-35 mu M for Ca2+. It was also demonstrated that 2a could measure both K+ and / or Ca2+ in solutions containing both ions.
U2 - 10.1007/s10895-009-0474-y
DO - 10.1007/s10895-009-0474-y
M3 - Article
VL - 19
SP - 777
EP - 782
JO - Journal of Fluorescence
T2 - Journal of Fluorescence
JF - Journal of Fluorescence
SN - 1053-0509
IS - 5
ER -