Arsenic‐Bridged Silafluorene and Germafluorene as a Novel Class of Mixed‐Heteroatom‐Bridged Heterofluorenes
Hiroshi Sasaki, Ippei Akioka, Hiroaki Imoto, Kensuke Naka
Abstract
Abstract Arsenic‐bridged silafluorene and germafluorene were synthesized as a novel class of mixed‐heteroatom‐bridged heterofluorenes. Their structures, photophysical properties, and electronic natures were studied by experimental and computational means. The doubly‐bridged biphenyl moieties were distorted from the reported singly‐bridged ones. The intersystem crossing from the singlet excitation states to the triplet ones was enhanced by the arsenic‐bridging structures, implying that bridging through an arsenic atom is favorable for phosphorescence.
Topics & Concepts
HeteroatomChemistryArsenicIntersystem crossingBridging (networking)Singlet statePhotochemistryPhosphorescenceBiphenylLuminescenceCrystallographyOrganic chemistryExcited stateFluorescenceRing (chemistry)Computer networkPhysicsQuantum mechanicsNuclear physicsComputer scienceOptoelectronicsLuminescence and Fluorescent MaterialsSynthesis and Properties of Aromatic CompoundsOrganic Electronics and Photovoltaics