Electronic and steric substituent effects on the fluorescence emission of 2‐pyrazoline derivatives
作者:Hamid Reza Memarian、Narges Rejali、Marzieh Soltani
DOI:10.1002/bio.4631
日期:2024.2
aryl rings. In addition, the effects of the concentration and the solvent polarity on the fluorescence emission were studied. Density functional theory (DFT) calculations were carried out to gain insight into the geometric, electronic, and spectroscopic properties of the pyrazoline derivatives. The results of both experimental and computational studies explain the effects of the geometrical orientation
合成了一系列取代的2-吡唑啉,并研究了杂环C 3和C 5位取代基对其荧光能力的空间和电子效应。两种不同的共轭分子内电荷转移(ICT)和通过空间的分子内电荷转移(螺共轭)会影响这些化合物的荧光强度。 ICT 过程和螺共轭的程度取决于附加取代的电子性质及其在所连接的芳环上的位置。此外,还研究了浓度和溶剂极性对荧光发射的影响。进行密度泛函理论 (DFT) 计算,以深入了解吡唑啉衍生物的几何、电子和光谱特性。实验和计算研究的结果解释了C 3和C 5芳基环对杂环的几何取向的影响以及它们额外取代的电子性质对荧光强度的影响。