Tuning the Optical Characteristics of Diketopyrrolopyrrole Molecules in the Solid State by Alkyl Side Chains
Bart W. H. Saes, Martin Lutz, Martijn M. Wienk, Stefan C. J. Meskers, René A. J. Janssen
Abstract
two transitions are seen, with the lower-energy transition being less intense. The results demonstrate how subtle changes in substitution exert large effects in optical properties.
Topics & Concepts
StackingCrystallographyMoleculeAlkylAcceptorSteric effectsMaterials scienceAbsorption spectroscopyAbsorption (acoustics)Side chainSubstituentPhotochemistryChemistryPolymerStereochemistryOrganic chemistryOpticsPhysicsComposite materialCondensed matter physicsOrganic Electronics and PhotovoltaicsPorphyrin and Phthalocyanine ChemistryMolecular Junctions and Nanostructures