title: The role of steric hindrance in the intramolecular oxidative aromatic coupling of pyrrolo[3,2-b]pyrroles.
abstract: The presence of steric hindrance triggers different reaction pathways in the intramolecular oxidative aromatic coupling of tetraaryl-pyrrolo[3,2-b]pyrroles and leads to the formation of a fluorene moiety and a new cationic π-system linked together by a spiro carbon atom. Computational studies elegantly rationalized these results. These previously unknown functional dyes emit red light with reasonable efficiency.
authors.affiliation: Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland. dtgryko@icho.edu.pl witold.danikiewicz@icho.edu.pl.
authors.forename: Maciej
authors.initials: M
authors.lastname: Krzeszewski
authors.affiliation: Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland. dtgryko@icho.edu.pl witold.danikiewicz@icho.edu.pl.
authors.forename: Paweł
authors.initials: P
authors.lastname: Swider
authors.affiliation: Warsaw University, Chemistry Department, Pasteura 1, 01-224 Warsaw, Poland. chamis@chem.uw.edu.pl.
authors.forename: Łukasz
authors.initials: Ł
authors.lastname: Dobrzycki
authors.affiliation: Warsaw University, Chemistry Department, Pasteura 1, 01-224 Warsaw, Poland. chamis@chem.uw.edu.pl.
authors.forename: Michał K
authors.initials: MK
authors.lastname: Cyrański
authors.affiliation: Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland. dtgryko@icho.edu.pl witold.danikiewicz@icho.edu.pl.
authors.forename: Witold
authors.initials: W
authors.lastname: Danikiewicz
authors.affiliation: Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland. dtgryko@icho.edu.pl witold.danikiewicz@icho.edu.pl.
authors.forename: Daniel T
authors.initials: DT
authors.lastname: Gryko