title: alpha-CD/crown-appended diazophenol for selective sensing of amines.
abstract: [reaction: see text] Azophenol dyes having the permethylated cyclodextrin and/or crown moieties have been synthesized. Compound 1 provides critical information on discriminating 1-3 degrees amines with unique color changes. Addition of 1 degrees and 2 degrees amines to 1 shifts the absorbance maximum of 1 from 380 to approximately 580 and approximately 530 nm, respectively, but no change is observed with 3 degrees amines. The high selectivity of 1 is mainly due to H-bonding between the ammonium H atoms of the amine and oxygen atoms of the crown-6.
authors.affiliation: Department of Chemistry, Gyeongsang National University, Chinju, Korea. jonghwa@gnu.ac.kr
authors.forename: Jong Hwa
authors.initials: JH
authors.lastname: Jung
authors.forename: Soo Jin
authors.initials: SJ
authors.lastname: Lee
authors.forename: Jong Seung
authors.initials: JS
authors.lastname: Kim
authors.forename: Woo Song
authors.initials: WS
authors.lastname: Lee
authors.forename: Yoshiteru
authors.initials: Y
authors.lastname: Sakata
authors.forename: Takahiro
authors.initials: T
authors.lastname: Kaneda
mesh_terms: D000588:Amines / Q000737:chemistry*; D001391:Azo Compounds / Q000138:chemical synthesis*; D003124:Colorimetry; D004396:Coloring Agents / Q000138:chemical synthesis*; D006860:Hydrogen Bonding; D015394:Molecular Structure; D010636:Phenols / Q000138:chemical synthesis*
chemical_list: D000588:Amines; D001391:Azo Compounds; D004396:Coloring Agents; D010636:Phenols