Multiple-boron–nitrogen (multi-BN) doped π-conjugated systems for optoelectronics

Abstract

Boron-nitrogen-doped π-conjugated systems have been regarded as a type of organic materials with exceptional electronic and optical properties, which makes them promising in optoelectronic devices. Due to the isoelectronic relationship...

Doping Heptagon‐Containing π‐Conjugated Systems with Boron

“…Incorporation of additional heteroatoms into borepin‐containing π‐conjugated systems can further enrich the structure diversity of boron‐doped seven‐membered ring [6m] . In addition, the introduction of heteroatoms can enhance the stability of borepin‐containing π‐conjugated systems and endow new optoelectronic properties [1c] …”

Aggregation-Induced Emission of Contorted Polycondensed Aromatic Hydrocarbons Made by Edge Extension Using a Palladium-Catalyzed Cyclopentannulation Reaction

“…Contorted polycyclic aromatic hydrocarbons (PAHs) are conjugated compounds whose out-of-plane geometry is mostly caused by an intramolecular steric congestion. , PAHs bearing cyclopentadienide units, which can be considered as cross-sectional units of fullerenes, disclose prominent optoelectronic − properties and, consequently, are employed in organic field-effect transistors (OFETs), organic light emitting diodes (OLEDs), and organic photovoltaics (OPVs). , Thus, there is a growing interest in exploring versatile and efficient synthetic strategies to make new contorted PAH structures and explore their chemical and physical properties . Among others, palladium- and nickel-catalyzed cross-coupling reactions, notably, Heck, Negishi, Suzuki–Miyaura, and Sonogashira, , are widely utilized in the synthesis of PAHs. − In addition, cycloaddition reactions have traditionally been used in the synthesis of large PAHs, namely, Diels–Alder reaction, which proved to be a versatile synthetic approach to make large aromatic compounds .…”

Synthesis and stereochemistry of chiral aza-boraspirobifluorenes with tetrahedral boron-stereogenic centers

“…Chiral tetrahedral boron compounds are promising optical materials [1][2][3][4] that exhibit circular dichroism (CD) or circular polarized luminescence (CPL), and that have been applied for stereoselective transformations. [5][6][7][8][9][10][11][12] A classic tetrahedral borane with four B-C bonds (BC 4 ) was reported by Torssell in 1962 (Fig.…”