Aggregation, acidochromicity, and metallochromicity of a pyridine-based poly(aryleneethynylene)

• Verfasst von: Seehafer, Kai [VerfasserIn]
• Verfasst von: Bender, Markus [VerfasserIn]
• Verfasst von: Bunz, Uwe H. F. [VerfasserIn]
• Titel: Aggregation, acidochromicity, and metallochromicity of a pyridine-based poly(aryleneethynylene)
• Verf.angabe: Kai Seehafer, Markus Bender, and Uwe H.F. Bunz
• E-Jahr: 2014
• Jahr: 28 January 2014
• Umfang: 6 S.
• Fussnoten: Gesehen am 01.10.2020
• Titel Quelle: Enthalten in: Macromolecules
• Ort Quelle: Washington, DC : Soc., 1968
• Jahr Quelle: 2014
• Band/Heft Quelle: 47(2014), 3, Seite 922-927
• ISSN Quelle: 1520-5835
• DOI: doi:10.1021/ma402615q
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 173427929X

Abstract

A pyridine-containing poly(aryleneethynylene) (PAE) is investigated, showing surprisingly versatile changes of its photophysical properties in response to external stimuli. Because of agglomeration-induced planarization of the backbone, this PAE exhibits a significant red-shift in absorption and emission, when moving from good to poor solvents. The basic lone pair on the pyridine unit makes this PAE pH-sensitive and imparts metallochromic properties, useful for the potential detection of a wide range of metal cations, resulting in color responses that range from quenching to red-shifted emission.