β‐Iminoenamine‐BF
<sub>2</sub>
Complexes: Aggregation‐Induced Emission and Pronounced Effects of Aliphatic Rings on Radiationless Deactivation
作者:Karthikeyan Perumal、Jai Anand Garg、Olivier Blacque、Ramanathan Saiganesh、Senthamaraikannan Kabilan、Kallupattu Kuppusamy Balasubramanian、Koushik Venkatesan
DOI:10.1002/asia.201200477
日期:2012.11
magnitude compared to those in the solid state. Some of the tested compounds displayed aggregation‐induced emission (AIE). Single crystal XRD analyses revealed a lack of interplanar π–π interactions, which are presumed to be absent owing to non‐planarity of the alicyclic component in the molecule. For most of the studied compounds, time‐dependent DFT (TD‐DFT) calculations invariably reveal intramolecular
据报道,一类新型的二氟化硼的合成,光物理和电化学性质,其包含建立在β-亚氨基烯胺发色骨架上的芳族稠合脂环族/杂脂环族环。这些化合物显示出较大的斯托克斯位移(86–121 nm),并且在固态时发射。与固态相比,在室温下在溶液中获得的量子产率异常地降低了一个数量级。一些被测化合物显示出聚集诱导发射(AIE)。单晶XRD分析表明缺乏平面内的π-π相互作用,由于分子中脂环族组分的非平面性,推测这种相互作用不存在。对于大多数研究的化合物,随时间变化的DFT(TD-DFT)计算始终显示分子内电荷转移(π–π *)特征,前沿轨道集中在硼-氮杂环上。发现硼和氟原子的参与可忽略不计。