Well-defined and monodisperse linear and star-shaped quaterfluorene-DPP molecules : the significance of conjugation and dimensionality

Kanibolotsky, Alexander and Vilela, Filipe and Forgie, John and Elmasly, Saadeldin Elamin Taher and Skabara, Peter and Zhang, Kai and Tieke, B. and McGurk, J. and Belton, C.R. and Stavrinou, Paul N. and Bradley, D.D.C. (2011) Well-defined and monodisperse linear and star-shaped quaterfluorene-DPP molecules : the significance of conjugation and dimensionality. Advanced Materials, 23 (18). pp. 2093-2097. ISSN 1521-4095

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Abstract

The synthesis of three new 1,4-diketo-3,6-diphenyl-pyrrolo[3,4-c]pyrrole (DPP) macromolecules appended with two or four quaterfluorene arms is reported. The compounds absorb mainly through the oligofluorene units and emit through the DPP core. Optical gain has been observed for Linear-c, a two-armed structure in which the quaterfluorene units are conjugated through the core unit.