Letters in Organic Chemistry Anion Receptors Based on Acyclic Phenol-Formaldehyde Oligomers Bearing Thiourea Groups
We prepared anion receptors based on acyclic phenol-formaldehyde oligomer bearing thiourea groups. The dimer (1b) and trimer (1c) showed the binding selectivity toward chloride (Cl-) and hydrogen sulfate (HSO4 -), respectively. This selectivity will be attributed to the fit size and shape of anionic species, which favor formation of a stable host-guest complex through the multiple intermolecular hydrogen bonding.
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Document Type: Research Article
Affiliations: Department of Chemistry and Chemical Engineering, Faculty of Engineering, Yamagata University, Jyonan 4-3-16, Yonezawa 992-8510 Japan.
Publication date: 2006-04-01
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