Porphyrin–Ryleneimide Hybrids: Tuning of Visible and Near-Infrared Absorption by Chromophore Desymmetrization
Sunit Kumar, Yogesh Kumar Maurya, Seongsoo Kang, Piotr J. Chmielewski, Tadeusz Lis, Joanna Cybińska, Dongho Kim, Marcin Stępień
Abstract
Unsymmetrically fused porphyrins containing one or two naphthalimide subunits were prepared in modular syntheses relying on electron-rich and electron-poor pyrrole building blocks. These new chromophores show progressive changes in their electron-deficient character, while retaining comparably small optical and electrochemical band gaps. The intrinsic curvature and extended optical absorption of these systems make them of interest as mono- and difunctional components of multichromophoric assemblies.
Topics & Concepts
ChromophorePorphyrinChemistryDesymmetrizationPyrrolePhotochemistryAbsorption (acoustics)ElectrochemistryInfraredOrganic chemistryElectrodeOpticsPhysical chemistryCatalysisPhysicsEnantioselective synthesisPorphyrin and Phthalocyanine ChemistryLuminescence and Fluorescent MaterialsMolecular Sensors and Ion Detection