Planarization of B-phenyldibenzo[b,f]borepin allows π-expansion across the B-phenyl group and makes this scaffold a useful electron-accepting unit for donor-π-acceptor type fluorophores.
A 9-phenylanthracene, constrained in a coplanar fashion by two methylene tethers, was synthesized and its optoelectronic properties were investigated. The rigid planarization increased its electron-donating character and induced a bathochromic...
carrier-transport abilities, which arise from virtually identical spatial distribution of their singly occupied and unoccupied molecular orbitals, SOMO(α) and SOMO(β), respectively. Herein, we disclose a boron-stabilized triphenylmethyl radical that shows outstanding thermal stability and resistance toward atmospheric conditions due to the substantial spin delocalization. The radical is used to fabricate organic
A design strategy of emissive and stable π-radicals is established based on incorporation of a boron atom at a position distant from the radical center. SOMO–LUMOelectronictransition in the boron-containing π-radicals gives rise to intense red fluorescence, irrespective of solvent polarity, different from donor-π-acceptor-type emissive π-radicals.
A polyamino-oligomer comprising repeating units having an indan skeleton, prepared by the reaction of a diisopropenylbenzene or a bis(α-hydroxyisopropyl)benzene with an aniline in the presence of an acid catalyst. The oligomer is used as a curing agent for resins to be used for making laminates and, in addition, it is reacted with maleic anhydride to give a polymaleimide compound. This compound has a low melting or softening point and can provide a thermosetting resin composition suitable for manufacturing copper-clad laminates by compounding with a reactant which forms a three-dimensional cross-linkage, such as triallyl isocyanurate or an aromatic diamine. The obtained laminate is lowly dielectric, heat-resistant and lowly water-absorbent, and is useful for making multilayer printed wiring boards.