Kurihara, Seiji published the artcilePhotoswitching properties of photonic band gap material containing azo-polymer liquid crystal, Product Details of C23H28N2O4, the publication is European Polymer Journal (2007), 43(12), 4951-4960, database is CAplus.
A photochem. tunable photonic crystal was prepared by infiltration of the polymer liquid crystal (LC) having azo-chromophores in a SiO2 inverse opal structure. The SiO2 inverse opal film infiltrated with the polymer LC reflected a light corresponding to the periodicity as well as the refractive indexes of the inverse opal structure. Linearly polarized light irradiation caused the shift of the reflection band to longer wavelength >15 nm. This is caused by the formation of uniaxially anisotropic mol. orientation of the polymer LC. The switched state was stable under interior light, and reversible switching of the reflection band can be achieved by the linearly and circularly polarized light irradiation This photoswitching property will be suitable not only for various optical materials, but also for introduction of defects in the photonic crystals.
European Polymer Journal published new progress about 135529-02-1. 135529-02-1 belongs to esters-buliding-blocks, auxiliary class azo,Alkenyl,Benzene,Ester,Ether, name is 6-(4-((4-Methoxyphenyl)diazenyl)phenoxy)hexyl methacrylate, and the molecular formula is C23H28N2O4, Product Details of C23H28N2O4.
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https://en.wikipedia.org/wiki/Ester,
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