Synthesis and fluorescence properties of isoindoline–benzazole-based boron difluoride complexes

Aggregation-induced emission (AIE) of pyridyl-enamido-based organoboron luminophores

“…Similar trends have been reported for the B-N bonds of other unsymmetrical BF 2 complexes. 7,10 As anticipated, Borepy1-4 adopt twisted conformations and the phenyl rings are not coplanar. (3.67 Å).…”

“…However, these desymmetrized bidentate ligand based BODIPYs still exhibit weak fluorescence quantum yield in the solid state due to the uncurbable deleterious p-p stacking. 7 Propeller-shaped AIE molecules such as tetraphenylethene (TPE) and hexaphenylsilole (HPS) exhibit very weak intermolecular interactions, 5 in light of this, we reasoned that desymmetrized bidentate ligand based Borepy1-4 with a propellershaped structure might display large Stokes shifts along with high quantum yield in the solid state.…”

Structural modification strategies for the rational design of red/NIR region BODIPYs

“…Although BODIPY dyes are potentially useful in a wide variety of different applications, the solidstate emission properties of most BODIPY derivatives have been found to be relatively poor with low near-planar cyanine structures. [376][377] Although these compounds usually display large Stokes shifts and significant solid-state emission, only a few of these molecular systems have absorption and emission bands in the red/NIR region. In this section, a typical set of these BODIPY analogues have been selected to explore the strategies that can be used to shift the absorption and emission bands to longer wavelengths.…”

Photostable orange-red fluorescent unsymmetrical diketopyrrolopyrrole–BF2 hybrids

“…51 In these cases, low to moderate synthetic yields were also reported. [52][53][54] In order to optimize this reaction, LiHMDS was trialled as a base based on a previous study 55 and higher yields were observed.…”