title: Synthesis, complexation, and fluorescence behavior of 3,4-dimethylthieno[2,3-b]thiophene carrying two monoaza-15-crown-5 ether groups.
abstract: A novel fluoroionophore 1 based on 3,4-dimethylthieno[2,3-b]thiophene bearing two monoaza-15-crown-5 ethers at 3- and 4-positions was prepared. UV-vis and fluorescence responses of compound 1 upon the addition of alkali and alkaline earth metal cations were evaluated in acetonitrile solution. Receptor 1 showed unique response for Ba(2+) due to the formation of an intramolecular sandwich complex.
authors.affiliation: College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, People's Republic of China.
authors.forename: Yong Xiang
authors.initials: YX
authors.lastname: Wu
authors.forename: Jing
authors.initials: J
authors.lastname: Cao
authors.forename: Hai Yan
authors.initials: HY
authors.lastname: Deng
authors.forename: Jun Xiang
authors.initials: JX
authors.lastname: Feng
mesh_terms: D001464:Barium / Q000737:chemistry; D002412:Cations; D043844:Crown Ethers / Q000737:chemistry*; D004583:Electrons; D004987:Ethers / Q000737:chemistry*; D007477:Ions; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D008673:Metals, Alkaline Earth / Q000737:chemistry; D008823:Micelles; D008956:Models, Chemical; D008968:Molecular Conformation; D013050:Spectrometry, Fluorescence / Q000379:methods; D013056:Spectrophotometry, Ultraviolet / Q000379:methods; D013876:Thiophenes / Q000737:chemistry*; D014466:Ultraviolet Rays
chemical_list: C569448:3,4-dimethylthieno(2,3-b)thiophene; D002412:Cations; D043844:Crown Ethers; D004987:Ethers; D007477:Ions; D008673:Metals, Alkaline Earth; D008823:Micelles; D013876:Thiophenes; D001464:Barium; C042148:15-crown-5