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A new method was developed for determination of micro amounts of nucleic acids based on near-infrared (near-IR) fluorescence recovery, employing a two-reagent system which is composed of an anionic tetracarboxy aluminum phthalocyanine (AlC 4 Pc) and a cationic tetra-N-hexadecylpyridiniumyl porphyrin (TC 16 PyP). The fluorescence of the AlC 4 Pc, with the maximum emission...
Bulk optodes for monovalent ions typically exhibit a relatively narrow measuring range of about two-orders of magnitude. Here, the measuring range was expanded to about six-orders of magnitude concentration change by optimizing a fluorescent chloride optical sensing film based on a plasticized poly(vinyl chloride) film incorporating the halide-selective ionophore [9]mercuracarborand-3 and the H ...
The binding properties of neutral or charged chromoionophores and anion ionophores in solvent polymeric membranes were characterized in situ by the so-called sandwich membrane method. Acidity constants (pK a ) of eight chromoionophores (ETH 5294, ETH 2439, ETH 5350, ETH 5418, ETH 5315, ETH 7061, ETH 7075, ETH 2412) were measured in bis(2-ethylhexyl)sebacate (DOS) and o-nitrophenyloctylether...
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