Efficient surface structuring and photoalignment of supramolecular polymer-azobenzene complexes through rational chromophore design
Efficient surface structuring and photoalignment of supramolecular polymer-azobenzene complexes through rational chromophore design
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DOI：
10.1039/c1jm12642c
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发表时间：
2011-09
影响因子：
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通讯作者：
Jaana Vapaavuori;V. Valtavirta;T. Alasaarela;J. Mamiya;A. Priimagi;A. Shishido;M. Kaivola
中科院分区：
文献类型：
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作者：
Jaana Vapaavuori;V. Valtavirta;T. Alasaarela;J. Mamiya;A. Priimagi;A. Shishido;M. Kaivola
通过合理选择偶氮苯生色团的对位取代基，可以有效地控制材料体系中生色团与生色团之间的相互作用。这允许优化材料系统，用于有效的表面浮雕形成或用于高且稳定的光配向。表面浮雕光栅可以随后使用原子层沉积用无定形TiO 2涂覆，从而产生高质量和高折射率的有机-无机光栅，与全聚合物光栅相比，其热稳定性大大提高。
Rational selection of the para-substituent of azobenzene chromophores in supramolecular polymeric complexes is exploited to control the chromophore–chromophore intermolecular interactions occurring in the material system. This allows optimizing the material system for either efficient surface-relief formation or for high and stable photoalignment. The surface-relief gratings can be subsequently coated with amorphous TiO2 using atomic layer deposition, resulting in high-quality and high-index organic–inorganic gratings with vastly improved thermal stability compared to all-polymeric gratings.