A green method to fabricate uniform porous responsive one-dimensional photonic crystals
2016
Xuan, Hongyun | Ren, Jiaoyu | Zhu, Yanxi | Liu, Xuefan | Ge, Liqin
Porous photonic crystals materials are hot topics, but there are rare reports about which uniform porous titania and various organic matter fabricate one dimensional photonic crystals (1DPhCs) by washing in the condition of a facile low temperature. Solve to the limitation of fabricating uniform porous 1DPhCs materials based on the non-polluting and saving energy, and expand the research area for the need of more applications as well as improves its character. The size of the porous 1DPhCs is below 150nm. The uniform porous TiO2 and poly N-Isopropy lacrylamide-acrylic acid P(NIPAM-AA) 1DPhCs, the stopbands of which can be made to span the whole visible range, were made by spin-coating technique. The multilayer films became the uniform porous structure after embalmed in water and ethyl alcohol, whose surface topography, lamellar structure and reflectance spectrum were described by the use of SEM and microscope respectively. Finally, we also did some environmental response research works and found that the 1DPhCs have better responsiveness to external temperature and β-glucan. Particularly, these 1DPhCs have improved about 2.3 times as responding to β-glucan than non-porous ones. Fabricating the uniform porous TiO2/P (NIPAM-AA) 1DPhCs by a green method will have great prospect in the future work.
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