Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia.
Department of Physics and Astronomy, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia.
Molecules. 2021 Dec 27;27(1):145. doi: 10.3390/molecules27010145.
Quinoline Schiff bases display potential applications in optoelectronics and laser fields because of their unique optical properties that arise from extensive delocalization of the electron cloud, and a high order of non-linearity. In this context, a new class of conjugated quinoline-derivative . -(quinolin-3-ylmethylene)anilines were synthesized from 2-hydroxyquinoline-3-carbaldehyde in two good yielding steps. The ability of these imines to accept an electron from a donor is denoted by their electron acceptor number and sites, which is calculated using density functional theory (DFT). The optical properties such as FT-IR, Raman, UV-VIS, and EDS spectra were calculated using TD-DFT, which also provided the energy gap, HOMO-LUMO structure. The optical properties of the synthesized imino quinolines were experimentally studied using photoluminescence and absorption spectroscopy. The properties such as Stokes shift and quantum yield were calculated using experimental data. Furthermore, the compound bearing a methyl group on the aryl ring and ZnO nanoparticles (hydrothermally synthesized) were dissolved in toluene, and optically excited with a 355 nm nanosecond laser, which produced a random laser.
喹啉席夫碱由于其电子云的广泛离域和高非线性，表现出在光电和激光领域的潜在应用。在这种情况下，一类新的共轭喹啉衍生物. -(喹啉-3-亚甲基)苯胺是由 2-羟基喹啉-3-甲醛在两步高产率的步骤中合成的。这些亚胺从供体接受电子的能力由其电子受体数和位置来表示，这是通过密度泛函理论（DFT）计算的。使用 TD-DFT 计算了 FT-IR、拉曼、UV-VIS 和 EDS 光谱等光学性质，这也提供了能隙、HOMO-LUMO 结构。使用荧光光谱和吸收光谱实验研究了合成亚氨基喹啉的光学性质。使用实验数据计算了斯托克斯位移和量子产率等性质。此外，在甲苯中溶解带有芳基环上甲基的化合物和 ZnO 纳米粒子（水热合成），并用 355nm 纳秒激光光学激发，产生随机激光。
