Rhenium (1) diimine tricarbonyl complexes tethered to (amido)thiourea-based ligands have been synthesized. While rhenium (1) tricarbonyl complexes have been reported to show significant emission changes upon molecular interactions with various anions, seperately, nitrophenyl-based (amido)thiourea receptors have also been shown to exhibit significant colorimetric changes upon molecular interaction with strongly basic anions such as CN-, F-, OAc- and BzO- through hydrogen bonding and/or -NH deprotonation. Therefore, the complexes reported herein were synthesized to combine both the luminescent properties of rhenium (1) complexes with the colorimetric ones of nitrophenyl-based ligands into a single compound posessing dual colorimetric and fluorescent anion recognition capabilities. Their reactivity towards various anions were investigated using UV-vis, emission and 1H NMR spectroscopy.

Thiourea and amidothiourea based rhenium (1) complexes as luminescent and colorimetric anion sensors

255th National Meeting (2018)

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