Nitrite- and Chloride-Selective Fluorescent Nano-Optodes and in Vitro Application to Rat Conceptuses

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Abstract
Nitrite- and chloride-selective, ion correlation-based, nano-optodes have been prepared for application in vitro. These fluorescent, liquid polymer based sensors have theoretically predictable responses to anion activities and good selectivity. The nitrite sensor, prepared with a vitamin B12 derivative ionophore, would be useful for determination of oxidized nitric oxide. Chloride nano-optodes, as well as micro-optodes, prepared with an indium porphyrin ionophore, were utilized to determine chloride levels both on the surface and inside the visceral yolk sac of organogenesis-stage rat conceptuses.