作者:Wang, Zhou、Hu, Kaibo、Lu, Chichong、Jin, Guofan
DOI:10.1007/s13738-024-03048-0
日期:——
Fluorescent tiny molecules that are resistant to acid have long been the center of interest. The nitrogen atoms on benzyl cyanide were sp hybridized, while the two nitrogen atoms at pyrimidine were sp2 hybridized in the primary structure that we constructed. With the addition of a protonic acid (H2SO4, CH3SO3H, and HF), the nitrogen atoms at acridine underwent sp3 hybridization, which caused the hydrogen
耐酸的荧光微小分子长期以来一直是人们关注的焦点。在我们构建的一级结构中,苯乙腈上的氮原子是sp杂化的,而嘧啶上的两个氮原子是sp 2 杂化的。添加质子酸(H 2 SO 4 、CH 3 SO 3 H 和 HF)后,氮原子吖啶发生sp 3 杂化,导致氢质子与三种类型的氮原子发生不同程度的相互作用。电子云密度的这种分布导致荧光发射减少。此外,利用Gaussian 09软件和DFT计算对其轨道构象进行建模,即最高占据分子轨道-最低未占据分子轨道(HOMO-LUMO)。此外,其晶体结构属于非均匀性较强的斜方晶系(a = 8.9160 (4) Å, b = 44.289 (3) Å, c = 9.6131 (7) Å, α = 90°, β = 90° , γ = 90°, V = 3796.0 (4) Å 3 , z = 4, Dc = 1.244 g/cm 3 )。 图形概要