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首页> 外文期刊>Journal of Applied Polymer Science >Preparation, photoisomerization, and microfabrication with two-photon polymerization of crosslinked azo-polymers
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Preparation, photoisomerization, and microfabrication with two-photon polymerization of crosslinked azo-polymers

机译：交联偶氮聚合物的双光子聚合制备，光异构化和微细加工

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摘要

We report the preparation, photoisomerization properties, and three-dimensional (3D) microstructure fabrication with two-photon polymerization of crosslinked azo-polymers. A series of bi-acrylate-substituted azobenzene derivatives were designed and synthesized as the monomers and/or crosslinkers of the crosslinked azo-polymers. The doping concentration of the derivatives in pre-polymer resins was significantly increased due to the introduction of bulky tert-butyl and flexible alkyl chains. The double-exponential dynamics of trans-to-cis photoisomerization of the azo-polymers indicated the coexistence of different processes for the azobenzene moieties in the polymeric crosslinked networks. The crosslinked azo-polymers exhibited ideal "on-off" switching performance in the highly reversible trans-cis-trans isomerization cycles. Furthermore, we prepared a photoresist containing the azobenzene derivative for 3D microstructure fabrication based on two-photon polymerization. A woodpile photonic crystal with a photonic bandgap at telecommunication wavelength region was successfully fabricated with the azobenzene-containing photoresist, which would open the way for the design and manufacturing of miniature optical communication devices.
机译：我们报告的制备，光致异构化特性和三维（3D）微观结构制造与交联的偶氮聚合物的两光子聚合。设计并合成了一系列的双丙烯酸酯取代的偶氮苯衍生物作为交联的偶氮聚合物的单体和/或交联剂。由于引入了大体积的叔丁基和柔性烷基链，预聚物树脂中衍生物的掺杂浓度显着增加。偶氮聚合物的反式至顺式光异构化的双指数动力学表明，在聚合物交联网络中，偶氮苯部分的不同过程并存。交联的偶氮聚合物在高度可逆的反式-顺式-反式异构化循环中表现出理想的“开-关”转换性能。此外，我们基于双光子聚合制备了用于3D微结构制造的含偶氮苯衍生物的光刻胶。用含偶氮苯的光致抗蚀剂成功地制造了在电信波长区域具有光子带隙的木桩光子晶体，这将为微型光通信设备的设计和制造开辟道路。

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