Ferrocene donor linked to pyridine/pyridinium acceptor <i>via</i> a systematically enlarged π-linker
Jiří Kulhánek, Milan Klikar, Oldřich Pytela, Zdeňka Růžičková, Filip Bureš
Abstract
-quaternization were revealed as suitable tools for exclusive manipulation of the LUMO with the almost steady HOMO. Whereas the electrochemical HOMO-LUMO gap can be tuned from 3.01 to 1.49 eV, the high- and low-energy absorption bands were found within the range of 280-402/456-547 nm. The pyridinium chromophores showed distinct negative solvatochromism. A thorough DFT analysis has been performed; it turned out that ferrocene donor is capable of two principal D-A interactions, whose employment depends on the appended electron-withdrawing moiety.
Topics & Concepts
PyridiniumSolvatochromismChromophoreFerrocenePyridineChemistryMoietyHOMO/LUMOPhotochemistryAcceptorElectrochemistryPhysical chemistryStereochemistryOrganic chemistryMoleculeElectrodePhysicsCondensed matter physicsMolecular Sensors and Ion DetectionMolecular Junctions and NanostructuresNonlinear Optical Materials Research