Octupolar Derivatives Functionalized with Superacceptor Peripheral Groups: Synthesis and Evaluation of the Electron-Withdrawing Ability of Potent Unusual Groups
作者:Cédric Rouxel、Céline Le Droumaguet、Yohan Macé、Sophie Clift、Olivier Mongin、Emmanuel Magnier、Mireille Blanchard-Desce
DOI:10.1002/chem.201103460
日期:2012.9.24
auxochromic and electron‐withdrawing (EW) groups, thus leading to redshifted absorption and emission. These moieties promote a core‐to‐periphery intramolecular charge transfer (ctp‐ICT) transition, the energy of which was found to be correlated to their EW strength. In this study, we provide evidence of a linear correlation between the Hammett constant (σp) values and the electronic gap between the ground
合成了具有三苯胺核心并带有“超强酸化剂”(即氟化的亚磺酰亚胺基嵌段)的新型三脚架衍生物或作为外围基团的新型亚磺酰亚胺基部分。这些新的生色团在近紫外线区域显示出强吸收性,在可见光区域显示出强发射性。发现氟化的亚磺酰亚胺基部分表现为强力的电致变色和吸电子(EW)基团,从而导致吸收和发射发生红移。这些部分促进了核心到外围的分子内电荷转移(ctp-ICT)过渡,发现其能量与其EW强度相关。在这项研究中,我们提供的哈米特常数之间的线性相关性的证据(σ p)值和三支导数的基态与第一激发态之间的电子间隙。这反过来被用于导出σ p氟化sulfoximinyl部分的值。这些专家工作组显示空前高σ p值,高达1.45相对于0.8对NO 2。另外,通过使用该方法,显示出硫亚胺基部分表现出与NO 2相似的EW强度。,同时提高透明度和溶解度。最后,相对于带有更常见的强EW基团的类似八极子,氟化亚砜亚胺外围部分的优异