title: Calix[4]arene-based, Hg2+ -induced intramolecular fluorescence resonance energy transfer chemosensor.
abstract: A novel calix[4]arene-based chemosensor 1 based on Hg2+-induced fluorescence resonance energy transfer (FRET) was synthesized, and its sensing behavior toward metal ions was investigated by UV/vis and fluorescence spectroscopies. Addition of Hg2+ to a CH3CN solution of 1 gave a significantly enhanced fluorescence at approximately 575 nm via energy transfer (FRET-ON) from the pyrenyl excimer to a ring-opened rhodamine moiety. In contrast, addition of Al3+ induced a distinct increase of pyrenyl excimer emission ( approximately 475 nm), while no obvious FRET-ON phenomenon was observed. Different binding behaviors of 1 toward Hg2+ and Al3+ were also proposed for the interesting observation.
authors.affiliation: IPHC-ULP-ECPM-CNRS, 25 rue Becquerel, F-67087 Strasbourg Cédex, France.
authors.forename: Amel Ben
authors.initials: AB
authors.lastname: Othman
authors.forename: Jeong Won
authors.initials: JW
authors.lastname: Lee
authors.forename: Jia-Sheng
authors.initials: JS
authors.lastname: Wu
authors.forename: Jong Seung
authors.initials: JS
authors.lastname: Kim
authors.forename: Rym
authors.initials: R
authors.lastname: Abidi
authors.forename: Pierre
authors.initials: P
authors.lastname: Thuéry
authors.forename: Jean Marc
authors.initials: JM
authors.lastname: Strub
authors.forename: Alain Van
authors.initials: AV
authors.lastname: Dorsselaer
authors.forename: Jacques
authors.initials: J
authors.lastname: Vicens
mesh_terms: D047250:Calixarenes / Q000138:chemical synthesis / Q000737:chemistry*; D002413:Cations, Divalent / Q000737:chemistry; D031541:Fluorescence Resonance Energy Transfer; D005456:Fluorescent Dyes / Q000138:chemical synthesis / Q000737:chemistry*; D008628:Mercury / Q000737:chemistry*; D010636:Phenols / Q000138:chemical synthesis / Q000737:chemistry*; D012235:Rhodamines / Q000737:chemistry; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization; D013056:Spectrophotometry, Ultraviolet