title: Regioselective synthesis of tetraphenyl-1,3-butadienes with aggregation-induced emission.
abstract: In the presence of substoichiometric amounts of Co2(CO)8, internal bisarylalkynes undergo reductive dimerization with good to excellent yields. The Co2(CO)8-induced reactions described are experimentally quite simple and provide a very useful synthetic procedure for the synthesis of tetraphenylbutadienes which exhibit aggregation-induced emission enhancement, i.e., weak emission in good solvents but strong fluorescence in solvents that lead toward formation of aggregates or in the solid state.
authors.affiliation: Department of Chemistry, Tamkang University , Tamsui 251, Taiwan.
authors.forename: Yamuna
authors.initials: Y
authors.lastname: Ezhumalai
authors.forename: Tsai-Hui
authors.initials: TH
authors.lastname: Wang
authors.forename: Hsiu-Fu
authors.initials: HF
authors.lastname: Hsu
mesh_terms: D002070:Butadienes / Q000138:chemical synthesis* / Q000737:chemistry; D018360:Crystallography, X-Ray; D019281:Dimerization; D005453:Fluorescence; D005456:Fluorescent Dyes / Q000138:chemical synthesis* / Q000737:chemistry; D015394:Molecular Structure; D012997:Solvents; D013050:Spectrometry, Fluorescence; D013237:Stereoisomerism
chemical_list: D002070:Butadienes; D005456:Fluorescent Dyes; D012997:Solvents; C031763:1,3-butadiene