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Nanoparticles of organic nonlinear optical molecular crystals synthesized by laser ablation in liquid

机译：液体中激光烧蚀合成有机非线性光学分子晶体的纳米粒子

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In this work, nanoparticles of nonlinear optical organic molecular cocrystal DAST (4-dimethylamino-N-methylstilbazolium p-toluenesulfonate) were obtained by pulsed laser ablation in liquid monomer isodecyl acrylate (IDA). Sizes of obtained nanoparticles were determined by scanning electron microscope and were about 200 nm in width. Laser ablation does not lead to photocuring or photodegradation of liquid monomer. Ablation processes was similar to the processes in classical liquids (water, organic solvents). Since in this case the nanoparticles were synthesized directly in the liquid medium of the surfactant monomer, so they are stabilized in it. Nanocomposites films were synthesized on the basis of these stable colloid solution by photocuring. For aliphatic polymer IDA long molecules cross-linking 1,6-Hexandiol diacrylate was used (DIOL). Optical properties of colloid solution and nanocomposites were investigated. It was found that obtained nanoparticles are amorphous form of DAST cocrystal and have a rod-like shape. Also dodecane and polyphenelene ether were tried in this work as liquids with different viscosity to find its effect on size and shape of nanoparticles.
机译：在这项工作中，通过在液态单体丙烯酸异癸酯（IDA）中进行脉冲激光烧蚀，获得了非线性光学有机分子共晶体DAST（4-二甲基氨基-N-甲基苯乙烯基对甲苯磺酸盐）的纳米粒子。通过扫描电子显微镜确定获得的纳米颗粒的尺寸，并且其宽度为约200nm。激光烧蚀不会导致液态单体发生光固化或光降解。消融过程与传统液体（水，有机溶剂）中的过程相似。由于在这种情况下，纳米颗粒直接在表面活性剂单体的液体介质中合成，因此它们在其中稳定了。在这些稳定的胶体溶液的基础上，通过光固化合成了纳米复合薄膜。对于脂族聚合物IDA，使用长分子交联的1，6-己二醇二丙烯酸酯（DIOL）。研究了胶体溶液和纳米复合材料的光学性质。发现获得的纳米颗粒是DAST共晶体的非晶形式并且具有杆状形状。此外，在这项工作中还尝试使用十二烷和聚苯醚作为具有不同粘度的液体，以发现其对纳米粒子的尺寸和形状的影响。

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