SENSING OF Hg2+ BY A CHEMORECEPTOR
1833
CONLUSIONS
1
Hence, on the basis of UV-Vis, H NMR titrations, and mass spectral pattern of
R1 with HgCl2 in DMSO, it was revealed that the supramolecular association of DMSO
with R1 through intermolecular hydrogen bonding leads to the occurrence of a solvent-
assisted band at 482 nm. The addition of Hg2+ to this solution leads to the formation of
its six-membered chelate and rupture of hydrogen bonding between DMSO and R1, which
ultimately leads to vanishing of 482 nm solvent-assisted bands and visual color change of
R1.
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