title: Synthesis and chemosensing properties of cinnoline-containing poly(arylene ethynylene)s.
abstract: Novel poly(arylene ethynylene)s comprising a cinnoline core were prepared in high yields via a three-step methodology. A Richter-type cyclization of 2-ethynyl- and 2-(buta-1,3-diynyl)aryltriazenes was used for cinnoline ring formation, followed by a Sonogashira coupling for the introduction of trimethylsilylethynyl moieties and a sila-Sonogashira coupling as the polycondensation technique. The fluorescence of the cinnoline-containing polymers in THF was highly sensitive to quenching by Pd(2+) ions.
authors.affiliation: Institute of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, Saint Petersburg, 198504, Russia.
authors.forename: Natalia A
authors.initials: NA
authors.lastname: Danilkina
authors.affiliation: Institute of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, Saint Petersburg, 198504, Russia.
authors.forename: Petr S
authors.initials: PS
authors.lastname: Vlasov
authors.affiliation: Institute of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, Saint Petersburg, 198504, Russia.
authors.forename: Semen M
authors.initials: SM
authors.lastname: Vodianik
authors.affiliation: Institute of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, Saint Petersburg, 198504, Russia.
authors.forename: Andrey A
authors.initials: AA
authors.lastname: Kruchinin
authors.affiliation: Institute of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, Saint Petersburg, 198504, Russia.
authors.forename: Yuri G
authors.initials: YG
authors.lastname: Vlasov
authors.affiliation: Institute of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, Saint Petersburg, 198504, Russia.
authors.forename: Irina A
authors.initials: IA
authors.lastname: Balova
keywords: Pd2+ detection; Sonogashira coupling; cinnolines; fluorescence quenching; poly(arylene ethynylene)s