Abstract
Sulfur-containing photoinduced charge transfer (PCT) sensors 1,8-anthraquinone-18-dithiacrown-5 ( 2) and 1,8-anthraquinone-18-trithiacrown-5 ( 3) selectively detect both inorganic Cd(II) and Hg(II). Simple heteroatom substitution of the receptor combined with an integrated intraannular carbonyl oxygen fine-tunes selectivity by simple synthetic design. In addition, the high yield synthesis of mercurous ion, Hg 2 2 + , has also been observed via the reduction of Hg(II) in the solvent dimethylformamide (DMF), which has not been previously reported. Spectroscopic and X-ray crystallographic results for Cd 2+, Hg 2 2 + and Mg 2+ complexes of oxygen and sulfur-containing derivatives of 1,8-anthraquinone-18-crown-5 are presented.
Published Version
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