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首页> 外文期刊>RSC Advances >Ultraviolet-responsive self-assembled metallomicelles for photocontrollable catalysis of asymmetric sulfoxidation in water
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Ultraviolet-responsive self-assembled metallomicelles for photocontrollable catalysis of asymmetric sulfoxidation in water

机译：紫外线响应自组装金属硅化物可光控催化水中的不对称硫氧化

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Self-assembled metallomicelles with ultraviolet (UV)-controlled morphologies were constructed from a synthesized azobenzene-containing amphiphilic chiral salen TiIV catalyst. The morphologies of the metallomicelles could be well adjusted by changing the UV irradiation time, and this was confirmed by TEM analyses. The UV-induced change in morphology potentially adjusted the catalyst concentration and/or accessibility in real-time, allowing photocontrollable catalysis of asymmetric sulfoxidation in water. UV-responsive catalytic activities with excellent selectivities were observed over the metallomicelles for a wide range of alkyl aryl sulfides. Moreover, a thermo-responsive NIPAAm block in the catalyst enables it to be easily recovered for steady reuse by thermo-controlled separation. This work constructed a photo-responsive metallomicellar system to carry out metallomicellar catalysis in a controllable way.
机译：用合成的含偶氮苯的两亲性手性salen Ti IV 催化剂构建了具有紫外（UV）控制形态的自组装金属硅化物。通过改变紫外线照射时间可以很好地调节金属硅化物的形态，这通过TEM分析得到了证实。紫外线引起的形态变化可能会实时调节催化剂浓度和/或可及性，从而可以在水中对非对称硫氧化进行光控催化。在大范围的烷基硅油中，对于广泛的烷基芳基硫醚，观察到具有出色选择性的紫外线响应催化活性。此外，催化剂中的热响应性NIPAAm嵌段可通过热控分离使其轻松回收，以稳定地重复使用。这项工作构建了一个光响应的金属硅化物体系，以可控的方式进行金属硅化物催化。

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