Dimethylsulphoxide solvate of N,N′-dinaphthylthiourea and its selective interactions with fluoride and copper(II) ions

What is it about?

Dimethylsulphoxide is an effective solvent to observe fluorescence changes of acidic hydrogen containing fluorophores while detecting fluoride ions . In this study we showed that a solvated fluorophore when dissolved in Dimethylsulphoxide can also act at a similar capacity as that of unsolvated urea based fluorescent sensors. While understanding such phenomenon we demonstrated several other features: (a) Dimethylsulphoxide solvate of N,N′-dinaphthylthiourea posses syn-anti conformation. (b) Among various anions and cations tested, addition of fluoride ions enhances fluorescence emission of a solution of N, N′-dinaphthylthiourea whereas copper (II) ions quenches.

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