Abstract 2-(9-Oxo-9H-thioxanthene-2-yloxy)-N-(3-silsesquioxanylpropyl) acetamide was synthesized with 2-(carboxymethoxy) thioxanthone and aminopropylisobutyl POSS as precursors. Absorption characteristics of 2-(9-Oxo-9H-thioxanthene-2-yloxy)-N-(3-silsesquioxanylpropyl) acetamide is similar to the thioxanthone, even its molar absorptivity is much higher than bare precursor thioxanthone. The one-component nature of this nano-photoinitiator allowed us to use it as a photoinitiator even in the air atmosphere. Initiation mechanism of 2-(9-oxo-9H-thioxanthene-2-yloxy)-N-(3-silsesquioxanylpropyl) acetamide is based on intramolecular hydrogen abstraction and resulted alkyl radical which initiate polymerization. Intramolecular hydrogen abstraction of 2-(9-oxo-9H-thioxanthene-2-yloxy)-N-(3-silsesquioxanylpropyl) acetamide ends up as the covalent linkage of POSS structure to the polymer. The important contribution of incorporation and good dispersion of POSS in poly(methyl methacrylate) matrices were observed as an improve in thermal stability and led to the formation of robust polymer/filler network. Poly(methyl methacrylate) hybrid network prepared with 2-(9-oxo-9H-thioxanthene-2-yloxy)-N-(3-silsesquioxanylpropyl) and aminopropylisobutyl POSS / 2-(carboxymethoxy) thioxanthone and scanning electron microscopy images of casts film surfaces presented two different views. First formulation displayed smaller and more homogeneous pores. Second formulation, which contains two component system, led to disordered porous structures.

中文翻译：

---

噻吨酮附着多面体低聚倍半硅氧烷 (POSS) 纳米光引发剂，用于在空气中制备 PMMA 混合网络

摘要 以2-(羧基甲氧基)噻吨酮和氨基丙基异丁基POSS为前驱体，合成了2-(9-氧代-9H-噻吨-2-基氧基)-N-(3-倍半硅氧烷丙基)乙酰胺。2-(9-Oxo-9H-thioxanthene-2-yloxy)-N-(3-silsesquioxanylpropyl) 乙酰胺的吸收特性与噻吨酮相似，甚至其摩尔吸收率远高于裸前体噻吨酮。这种纳米光引发剂的单组分性质使我们即使在空气中也能将其用作光引发剂。2-(9-oxo-9H-thioxanthene-2-yloxy)-N-(3-silsesquioxanylpropyl) 乙酰胺的引发机理是基于分子内夺氢和引发聚合的产生的烷基自由基。2-(9-oxo-9H-thioxanthene-2-yloxy)-N-(3-silsesquioxanylpropyl) 乙酰胺的分子内夺氢最终成为 POSS 结构与聚合物的共价键。观察到 POSS 在聚（甲基丙烯酸甲酯）基质中的掺入和良好分散的重要贡献是热稳定性的提高，并导致形成坚固的聚合物/填料网络。用 2-(9-oxo-9H-thioxanthene-2-yloxy)-N-(3-silsesquioxanylpropyl) 和氨基丙基异丁基 POSS / 2-(carboxymethoxy) thioxanthone 制备的聚（甲基丙烯酸甲酯）杂化网络和铸膜的扫描电子显微镜图像表面呈现两种不同的视图。第一种配方显示出更小且更均匀的孔隙。包含双组分系统的第二种配方导致无序的多孔结构。观察到 POSS 在聚（甲基丙烯酸甲酯）基质中的掺入和良好分散的重要贡献是热稳定性的提高，并导致形成坚固的聚合物/填料网络。用 2-(9-oxo-9H-thioxanthene-2-yloxy)-N-(3-silsesquioxanylpropyl) 和氨基丙基异丁基 POSS / 2-(carboxymethoxy) thioxanthone 制备的聚（甲基丙烯酸甲酯）杂化网络和铸膜的扫描电子显微镜图像表面呈现两种不同的视图。第一种配方显示出更小且更均匀的孔隙。包含双组分系统的第二种配方导致无序的多孔结构。观察到 POSS 在聚（甲基丙烯酸甲酯）基质中的掺入和良好分散的重要贡献是热稳定性的提高，并导致形成坚固的聚合物/填料网络。用 2-(9-oxo-9H-thioxanthene-2-yloxy)-N-(3-silsesquioxanylpropyl) 和氨基丙基异丁基 POSS / 2-(carboxymethoxy) thioxanthone 制备的聚（甲基丙烯酸甲酯）杂化网络和铸膜的扫描电子显微镜图像表面呈现两种不同的视图。第一种配方显示出更小且更均匀的孔隙。包含双组分系统的第二种配方导致无序的多孔结构。