hotonic crystals fabricated by block copolymerization-induced microphase separation
hotonic crystals fabricated by block copolymerization-induced microphase separation
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嵌段共聚诱导微相分离制备的热渗晶体
DOI：
10.1021/acs.macromol.6b01190
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发表时间：
2016
期刊：
影响因子：
5.5
通讯作者：
and K. Kishikawa
中科院分区：
文献类型：
--
作者：
R. Motokawa;T. Taniguchi;T. Kumada;Y. Iida;S. Aoyagi;Y. Sasaki;M. Kohri;and K. Kishikawa
提出了一种通过聚合诱导嵌段共聚物微相分离制备光子晶体的方法。嵌段共聚物的分子量很大，传统的溶液浇铸和退火方法很难完成微相分离，形成周期性有序的亚微米结构。我们的方法克服了困难，通过诱导微相分离和转变过程中的聚合，当BCP的分子量是足够小的微相分离和转变。微相分离的结构，然后扩大，同时保持自相似性。采用活性自由基本体共聚法制备了反射波长λm <$1000 nm、半高宽Δλ = 0.05λ m的聚甲基丙烯酸甲酯-聚苯乙烯嵌段共聚物。
We present a method for fabricating photonic crystals (PCs) by polymerization-induced microphase separation of block copolymers (BCPs). Molecular weight of BCP for PCs is so large that it has been difficult for conventional solution casting and annealing methods to complete the microphase separation to form periodically ordered submicron structures. Our method overcomes the difficulty by inducing the microphase separation and transitions during the polymerization, when the molecular weight of the BCPs is small enough for the microphase separation and transitions. The microphase-separated structure is then enlarged while maintaining the self-similarity. We succeeded in fabricating PCs with reflection wavelength λm≈ 1000 nm and a full width at half-maximum Δλ = 0.05λmby living-radical bulk block copolymerization of poly(methyl methacrylate)-block-polystyrene.