探讨thiazolopyrimidoquinoline衍生物的非线性光学特性:一个联合Z-Scan和DFT调查

相关实验视频

Updated: Apr 30, 2026

Synthesis of pH Dependent Pyrazole, Imidazole, and Isoindolone Dipyrrinone Fluorophores using a Claisen-Schmidt Condensation Approach

Synthesis of pH Dependent Pyrazole, Imidazole, and Isoindolone Dipyrrinone Fluorophores using a Claisen-Schmidt Condensation Approach

Published on: June 10, 2021

Tooba Tabibi¹, Abbas Ali Esmaeili², Soheil Sharifi³

¹Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran.

Journal of fluorescence

|March 29, 2025

概括

这项研究研究了 thiazolopyrimidoquinoline衍生物的非线性光学 (NLO) 特性. 化合物4a由于其增强的二极极矩,表现出优越的NLO特性,对NLO应用有希望.

科学领域:

材料科学材料科学材料科学
有机化学有机化学
物理化学物理化学

背景情况:

非线性光学 (NLO) 材料对于先进的光子技术至关重要.
提亚佐洛皮里米多基诺林衍生物是一种有机化合物,具有潜在的NLO应用.
了解结构-属性关系是设计高效的NLO材料的关键.

研究的目的:

合成和研究新型 thiazolopyrimidoquinoline 衍生物的 NLO 特性.
为了将分子结构,特别是二极矩,与观察到的NLO反应相关联.
为了确定NLO应用程序的有前途的候选人.

主要方法:

用不同的替代剂合成 thiazolopyrimidoquinoline 衍生物.
使用Z扫描技术测量NLO属性的实验性表征.
使用密度函数理论 (DFT) 进行理论计算,使用M06-2X/6-311G级别进行结构优化.
吸收和光光谱学用于分析电子属性.

主要成果:

与其他衍生品相比,化合物4a,6-(3,4-dihydroxyphenyl) -9,9-dimethyl-1,2,6,9,10,11-hexahydro-5H-thiazole[2',3':2,3]pyrimido[4,5-b]quinoline-5,7(8H) -dione,显示出明显更高的非线性吸收系数 (β) 和非线性折射率 (n2).
化合物4a表现出更大的二极极矩,这与其增强的NLO特性相关.
所有化合物都有相似的光带间隙 (2.8±0.4 eV),表明双极时刻是影响NLO行为的主要因素.
化合物4a显示出相当大的基层二极极矩,通过吸收和光研究得到证实.

结论:

thiazolopyrimidoquinoline衍生物的 NLO 特性受到其分子结构的强烈影响,特别是双极时刻.
化合物4a是NLO应用的非常有前途的材料,因为它具有有利的NLO系数和大双极矩.
这些发现为合理设计新的有机NLO材料提供了宝贵的见解.

关键词:

密度函数理论密度函数理论双极运动时刻是双极运动时刻.非线性光学特性非线性光学特性提亚佐洛皮里米多基诺林衍生物第三阶级非线性易感性

更多相关视频

Determination of the Photoisomerization Quantum Yield of a Hydrazone Photoswitch

Determination of the Photoisomerization Quantum Yield of a Hydrazone Photoswitch

Published on: February 7, 2022

Author Spotlight: Unveiling the Potential of VSFG Microscopy in Studying Mesoscopically Heterogeneous Self-Assembled Structures

Author Spotlight: Unveiling the Potential of VSFG Microscopy in Studying Mesoscopically Heterogeneous Self-Assembled Structures

Published on: December 1, 2023

相关概念视频

Aryldiazonium Salts to Azo Dyes: Diazo Coupling

Aryldiazonium Salts to Azo Dyes: Diazo Coupling

The reaction of weakly electrophilic aryldiazonium (also called arenediazonium) salts with highly activated aromatic compounds leads to the formation of products with an —N=N— link, called an azo linkage. This reaction, presented in Figure 1, is known as diazo coupling and occurs without the loss of the nitrogen atoms of the aryldiazonium salt. Highly activated aromatic compounds such as phenols or arylamines favor the diazo coupling reaction. The coupling generally occurs at the...

NMR Spectroscopy of Benzene Derivatives

NMR Spectroscopy of Benzene Derivatives

Simple unsubstituted benzene has six aromatic protons, all chemically equivalent. Therefore, benzene exhibits only a singlet peak at δ 7.3 ppm in the 1H NMR spectrum. The observed shift is far downfield because the aromatic ring current strongly deshields the protons. Any substitution on the benzene ring makes the aromatic protons nonequivalent, and the protons split each other. The peak is, therefore, no longer a singlet and the splitting pattern and their associated coupling...

Photoluminescence: Applications

Photoluminescence: Applications

Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...