Synthesis of fluorescent 2-(2´,2´´-bithienyl)-1,3-benzothiazoles

• Author(s): Batista, Rosa M. F. ; Costa, Susana P. G. ; Raposo, M. Manuela M.
• Date: 2003
• Persistent ID: http://hdl.handle.net/1822/1972
• Origin: RepositóriUM - Universidade do Minho
• Subject(s): Fluorescence; Bithiophenes; Benzothiazoles; Bithienyl-benzothiazoles
• Document Type: Conference Object
• Language: English

Description

Eight new bithienyl benzothiazole derivatives 1 were synthesised by reacting various 5-formyl-5´-alkoxy- or 5-formyl-5´-amino-2,2´-bithiophenes 2 with ortho-aminobenzenethiol in good to excelent yields. Compounds 1a-h were completely characterised by spectroscopic methods. Absorption and fluorescence spectra of these compounds were also recorded. In agreement with previous findings concerning the fluorescence studies of 2-(2´-thienyl)-1,3-benzothiazoles, the new compounds prepared can find application for additives in textile dyeing and plastics, tunable dye lasers, biological stains, fluorescent markers, materials science and optoelectronics.