Síntese, caracterização e polimerização química de Bipirrol e Pirrol ancorado ao marcador fluorescente dansila

Abstract

Conjugated polymers are materials that have been attracting great attention due to their excellent electrical and optical properties. In particular, polypyrrole and its derivatives are considered promising materials for many applications, in addition to their electrochromic properties, they have good electrical conductivity, thermal and chemical stability. These properties can be modulated from modifications in the chemical structure of the monomer, such as the insertion of fluorescent labels and the obtaining of extended conjugated systems. Therefore, two pyrrole-derived monomers were synthesized, the p-phenylpyrroldansyl monomer obtained in 98% yield showing fluorescence when subjected to UV light and the p-phenylbipyrrole monomer obtained with 42.3% yield from the Clauson-reaction. Kaas. The chemical polymerization of the obtained monomers provided two new polypyrrole derivatives, the formation of the polymers was evidenced by the reduction of the bands referring to the C-H bonds of the pyrrole ring in the infrared spectrum. The compounds obtained were characterized by 1H NMR, 13C NMR and FTIR spectroscopic techniques.