Boron difluoride functionalized (tetrahydroimidazo[1,5-a]pyridin-3-yl)phenols: Highly fluorescent blue emissive materials
作者:Gioele Colombo、Antonio Romeo、G. Attilio Ardizzoia、Julien Furrer、Bruno Therrien、Stefano Brenna
DOI:10.1016/j.dyepig.2020.108636
日期:2020.11
Some (tetrahydroimidazo[1,5-a]pyridin-3-yl)phenols were reacted with boron trifluoride diethyl etherate and the resulting BF2-functionalized compounds were fully characterized both in solution using 1H, 13C, 11B, 19F NMR spectroscopy and in the solid state (infrared, fluorescence, X-ray). When excited with UV light these boron difluoride derivatives show in dichloromethane solution an intense fluorescence
使一些(四氢咪唑并[1,5 - a ]吡啶-3-基)酚与三氟化硼二乙基醚化物反应,并使用1 H,13 C,11 B,19 F在溶液中充分表征所得的BF 2官能化化合物NMR光谱和固态(红外,荧光,X射线)。当使用UV激发光,这些二氟化硼衍生物显示在二氯甲烷溶液中在UV区域的强烈的荧光发射,与λ最大发射波长在357至390 nm之间变化。对于大多数化合物,均记录了良好的绝对量子产率。在固态状态下,它们的特点是发出强烈的蓝光(388–435 nm),具有很高的绝对量子产率(最高达0.68)和x,y色坐标(CIE 1931),接近于标准蓝色。随时间变化的密度泛函理论(TD-DFT)计算用于定义荧光过程中涉及的电子跃迁和激发态的性质。