Physicochemical and Nonlinear Optical Properties of Novel Environmentally Benign Heterocyclic Azomethine Dyes: Experimental and Theoretical Studies
作者:S. M. Afzal、M. A. N. Razvi、Salman A. Khan、Osman I. Osman、Ahmed H. Bakry、Abdullah M. Asiri
DOI:10.1371/journal.pone.0161613
日期:——
photophysical properties like, extinction coefficient, oscillator strength, stokes shift and transition dipole moment. This reflects physicochemical behaviors of synthesized dyes. In addition, their intramolecular charge transfer and nonlinear optical properties, supported by natural bond orbital technique, were also studied computationally by density functional theory. The negative nonlinear refractive
蒽-9-甲醛与不同杂环胺在微波辐射下反应制备了新型杂环偶氮甲胺染料。偶氮甲碱染料的结构通过元素分析,质谱和几种光谱学技术得到证实。我们研究了偶氮甲胺染料在各种溶剂中的吸光度和荧光光谱。发现它们是良好的吸收体和发射体。我们还报告了光物理性质,如消光系数,振荡器强度,斯托克斯位移和跃迁偶极矩。这反映了合成染料的物理化学行为。此外,还通过密度泛函理论对它们的分子内电荷转移和非线性光学性质进行了自然键轨道技术的支持。使用闭孔和开孔Z扫描技术以及连续波氦氖激光,测量了这些染料的负非线性折射率和非线性吸收系数。发现它们随溶液浓度线性变化。