Gold nanoparticles modified with isothiouronium-derived amphiphile units 1 were prepared by the reduction of AuCl4- (n - C8 H17)4 N+ with NaBH4 in the presence of bis(5-(N-(2-(2-methoxyethoxy)ethyl)-N-methyl-S-isothiouronio)pentyl) disulfide 2. The obtained nanoparticles 1 showed a selective coloration for hydrophobic anions in water, possibly due to an anion exchange and subsequent aggregation. On the basis of this observation, the detection of F- in water has been achieved using 3-nitrophenylboronic acid as a mediator at pH 5.5, thereby providing a new strategy for the design of a F- sensory system.
All Science Journal Classification (ASJC) codes
- Drug Discovery
- Organic Chemistry