title: Dipyrrolonaphthyridinediones--structurally unique cross-conjugated dyes.
abstract: Red-emissive dyes based on a previously unknown skeleton--dipyrrolo[1,2-b:1',2'-g][2,6]naphthyridine-5,11-dione--can be easily synthesized from simple and inexpensive reagents by one- or two-step routes. A careful selection of the substituents gives access to a variety of dipyrrolonaphthyridinedione derivatives with intense fluorescence in the range of 520-740 nm.
authors.affiliation: Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland. dtgryko@icho.edu.pl.
authors.forename: Marek
authors.initials: M
authors.lastname: Grzybowski
authors.forename: Irena
authors.initials: I
authors.lastname: Deperasińska
authors.forename: Maciej
authors.initials: M
authors.lastname: Chotkowski
authors.forename: Marzena
authors.initials: M
authors.lastname: Banasiewicz
authors.forename: Artur
authors.initials: A
authors.lastname: Makarewicz
authors.forename: Bolesław
authors.initials: B
authors.lastname: Kozankiewicz
authors.forename: Daniel T
authors.initials: DT
authors.lastname: Gryko