Azaphthalocyanines: Red Fluorescent Probes for Cations. Issue 16 (19th March 2013)

• Record Type: Journal Article
• Authors: Novakova, Veronika; Lochman, Lukáš; Zajícová, Ivana; Kopecky, Kamil; Miletin, Miroslav; Lang, Kamil; Kirakci, Kaplan; Zimcik, Petr
• Is Part Of: Chemistry. Volume 19:Issue 16(2013)
• Page Start: 5025
• Page End: 5028
• Publication Date: 2013-03-19
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.201300079
• Languages: English
• ISSNs: 0947-6539

Abstract

<abstract abstract-type="graphical" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <p> <bold>Light up a red crown</bold>: Chelation of sodium and potassium cations by aza[15]crown‐5 switches on strong red fluorescence in azaphthalocyanines. This is due to an inhibition of ultrafast intramolecular charge transfer by coordination of the cations to the donor center. Sodium cations fit well into a cavity of the recognition moiety, while potassium forms supramolecular assemblies of azaphthalocyanines with 1:2 stoichiometry.<boxed-text content-type="graphic" position="anchor" orientation="portrait"><graphic position="anchor" mimetype="image" xlink:href="ark:/27927/pgg1x529jj0" orientation="portrait" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></boxed-text></p> </abstract>