title: Spectral investigation of coordination of cuprum cations and protons at PAMAM dendrimer peripherally modified with 1,8-naphthalimide units.
abstract: The investigations aim at revealing the ability of a 1,8-napthalimide-modified poly(amidoamine) dendrimer from second generation to respond to the presence of cuprum cations and protons in the environment. It has been established that a single Cu(2+) cation present in the dendrimer molecule is capable of quenching more than 78% of its fluorescence what is an indication of high sensitiveness. An enhancement of the fluorescence emission of the dendrimer has been observed in acidic medium. It has been established that the processes of coordinating the ions in different sites of the dendrimer are reversible.
authors: Institute of Polymers, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria. grabchev@polymer.bas.bg
authors: Ivo
authors: I
authors: Grabchev
authors: Desislava
authors: D
authors: Staneva
authors: Vladimir
authors: V
authors: Bojinov
authors: Rosica
authors: R
authors: Betcheva
authors: Vasilis
authors: V
authors: Gregoriou
mesh_terms: D002412:Cations; D003300:Copper / Q000737:chemistry*; D050091:Dendrimers; D053644:Naphthalimides / Q000737:chemistry*; D011073:Polyamines / Q000737:chemistry*; D011522:Protons; D013050:Spectrometry, Fluorescence
chemical_list: D002412:Cations; D050091:Dendrimers; D053644:Naphthalimides; C104700:PAMAM Starburst; D011073:Polyamines; D011522:Protons; D003300:Copper