Boron complexes of thiazole-bridged 1,5-bidentate nitrogen ligands: synthesis and acid-responsive photophysical properties
Khurnia Krisna Puji Pamungkas, Toshifumi Maruyama, Toshiaki Murai
Abstract
, to the boron complex led to a significant red-shift of the absorption band. Likewise, addition of triflic acid (TfOH) and trifluoroacetic acid (TFA) resulted in the emergence of a new absorption band at a longer wavelength accompanied by fluorescence quenching phenomena. DFT calculations show that the energy gap between HOMO and LUMO of the complex significantly decreases after protonation of the nitrogen atom in the acceptor unit of the boron complex.
Topics & Concepts
ChemistryPhotochemistryProtonationBoronLewis acids and basesDenticityTriflic acidThiazoleBoraneStokes shiftAcceptorMedicinal chemistryCrystallographyFluorescenceStereochemistryOrganic chemistryCatalysisPhysicsQuantum mechanicsCrystal structureCondensed matter physicsIonLuminescence and Fluorescent MaterialsOrganic Light-Emitting Diodes ResearchPorphyrin and Phthalocyanine Chemistry