A high-yielding click reaction was used to synthesize a series of highly conjugated, symmetrical, as well as asymmetrical compounds with a benzene core. Cyclic voltammetry and ultraviolet/visible absorption spectroscopy were carried out, and proved that the side groups of the benzene derivatives played an important role in the energy gaps, and affected the third-order non-linear optical response. The maximum absorption wavelength of the series of benzene derivatives showed an obvious red-shift. Moreover, the addition of resilient electron-withdrawing groups significantly narrowed the energy levels as compared with precursors. The third-order nonlinear properties of this benzene derivative were tested by the Z-scan technique. The expected properties of this series of molecules were obtained, and it was found that the series of molecules undergoes a transition from reverse saturable absorption to saturable absorption, which has certain reference significance for a nonlinear optical field.

中文翻译：

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点击化学修饰新型三阶非线性材料的光学性质

采用高产点击反应合成了一系列具有苯核的高度共轭、对称和不对称的化合物。进行了循环伏安法和紫外/可见吸收光谱分析，证明苯衍生物的侧基在能隙中起重要作用，影响了三阶非线性光学响应。该系列苯衍生物的最大吸收波长呈现明显的红移。此外，与前体相比，弹性吸电子基团的添加显着缩小了能级。该苯衍生物的三阶非线性特性通过Z扫描技术进行了测试。得到了这一系列分子的预期性质，