Conformationally restricted aza-dipyrromethene boron difluorides (aza-BODIPYs) with high fluorescent quantum yields.

摘要: A simple approach to the highly fluorescent near-infrared aza-BODIPY dyes with higher fluorescence quantum yields (up 0.81 in toluene) comparison their known analogues is presented. Our based on restricted rotations of 1,7-phenyl groups mean plane aza-BODIPYs, which achieved through installation bulky substituents aza-BODIPYs and results a reduced nonradiative relaxation process solution. The large torsion angles between core (ϕ1 ϕ2 these novel conformationally aza-BODIPYs) were confirmed by X-ray diffraction studies.