title: Novel PAMAM Dendron as a Bichromophoric Probe Based on Rhodamine 6G and 1,8-Naphthalimide.
abstract: A novel PAMAM dendron designed as a wavelength-shifting bichromophore with 1,8-naphthalimide energy "donor" capable of absorbing light and efficiently transferring the energy to a focal Rhodamine 6G "acceptor" was synthesized and investigated. Moreover, the system was configured on the "fluorophore-spacer-receptor" format. Thus, the distinguishing features of FRET systems were successfully combined with the properties of photoinduced electron transfer and classical ring-opening sensor systems. The synthesized compound shows excellent signaling properties towards protons, Hg(2+) and Fe(3+) ions, therefore, the system is able to act as an one-output combinatorial logic circuit with four chemical inputs.
authors.affiliation: Department of Organic Synthesis, University of Chemical Technology and Metallurgy, 8 Kliment Ohridsky Bulv, 1756, Sofia, Bulgaria.
authors.forename: Margarita D
authors.initials: MD
authors.lastname: Dimitrova
authors.affiliation: Department of Organic Synthesis, University of Chemical Technology and Metallurgy, 8 Kliment Ohridsky Bulv, 1756, Sofia, Bulgaria.
authors.forename: Nikolai I
authors.initials: NI
authors.lastname: Georgiev
authors.affiliation: Department of Organic Synthesis, University of Chemical Technology and Metallurgy, 8 Kliment Ohridsky Bulv, 1756, Sofia, Bulgaria. vlbojin@uctm.edu.
authors.forename: Vladimir B
authors.initials: VB
authors.lastname: Bojinov
keywords: 1,8-Naphthalimide/Rhodamine 6G bichromophore; Combinatorial logic circuit; Fluorescence resonance energy transfer (FRET); Internal charge transfer (ICT); OR and AND logic gates; Photoinduced electron transfer (PET)