Alkynylated phenazines

• Verfasst von: Bryant, Jonathan [VerfasserIn]
• Verfasst von: Lindner, Benjamin [VerfasserIn]
• Verfasst von: Bunz, Uwe H. F. [VerfasserIn]
• Titel: Alkynylated phenazines
• Titelzusatz: synthesis, characterization, and metal-binding properties of their bis-triazolyl cycloadducts
• Verf.angabe: Jonathan J. Bryant, Yexiang Zhang, Benjamin D. Lindner, Evan A. Davey, Anthony Lucas Appleton, Xuhong Qian, and U.H.F. Bunz
• E-Jahr: 2012
• Jahr: 23 August 2012
• Umfang: 8 S.
• Fussnoten: Published online 23 August 2012 ; Gesehen am 04.09.2018
• Titel Quelle: Enthalten in: The journal of organic chemistry
• Ort Quelle: [S.l.] : American Chemical Society, 1936
• Jahr Quelle: 2012
• Band/Heft Quelle: 77(2012), 17, Seite 7479-7486
• ISSN Quelle: 1520-6904
• DOI: doi:10.1021/jo3012978
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1580666876

Abstract

We have synthesized a series of ethynylated phenazines and their bis-triazolyl cycloadducts to serve as metal ion sensors. Binding of metal ions is achieved through coordination to the phenazine nitrogen atom and the triazole ring. To allow metal sensing in aqueous solution, the triazole units are substituted with water-soluble ethylene glycol chains. These phenazine cycloadducts exhibit a selective affinity for binding silver ions. Examination of the halogenated analogues reveals a lowering of the band gap and the corresponding bathochromic shifts in the absorption and emission spectra. The electron-withdrawing properties of these halogens also result in significantly decreased metal-binding activity of the phenazine cycloadducts.