Journal
ANALYTICA CHIMICA ACTA
Volume 733, Issue -, Pages 78-83Publisher
ELSEVIER
DOI: 10.1016/j.aca.2012.04.041
Keywords
Label-free detection; Logic gate; Silver nanoparticle; Platinum(II) complex; Luminescent probe
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Funding
- Hong Kong Baptist University [FRG2/10-11/008, FRG2/11-12/009]
- Environment and Conservation Fund (ECF) [3/2010]
- Centre for Cancer and Inflammation Research, School of Chinese Medicine (CCIR-SCM, HKBU)
- Research Fund for the Control of Infectious Diseases [RFCID/11101212]
- Research Grants Council [HKBU/201811]
- University of Macau
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Many natural phenomena are associated with the presence of two or more separate variables. We report here an OR DNA logic gate based on a luminescent platinum(II) switch-on probe for silver nanoparticles and pH, both of which may be considered putative indicators of pollution. The modulation of metal complex/double-stranded DNA complex phosphorescence by Ag+ and H+ was used to construct a simple, rapid and label-free method for the label-free detection of pH and nanomolar Ag+ ions and nanoparticles in aqueous solutions with high selectivity. (C) 2012 Elsevier B.V. All rights reserved.
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