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首页> 外文OA文献 >Enhancement of the photochromic performance of spirooxazine in sol-gel derived organic-inorganic hybrid matrices by additives
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Enhancement of the photochromic performance of spirooxazine in sol-gel derived organic-inorganic hybrid matrices by additives

机译：添加剂可增强螺吡嗪在溶胶-凝胶衍生的有机-无机杂化基质中的光致变色性能

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摘要

Organic-inorganic hybrid materials synthesized via sol-gel processing are excellent solid matrices for photochromic dyes like spirooxazine, and the photochromic performance can be further enhanced by introducing suitable additives. This work describes the effects of additives on the photochromic intensity (ΔA0), decolouration rate (k) and photostability of spirooxazine in sol-gel derived organic-inorganic hybrid matrices. They include fluoro-alkylsilane (FAS), bisphenol A (BPA) and methyl-imidazole (MI). FAS enhances both ΔA0 and photostability, but has little effect on k. The higher the content of BPA, the higher the ΔA0 and the higher the photostability, but the lower the k. The effect of MI on ΔA0 and k is not so considerable as that of BPA and is a little complicated, while significant improvement in photostability is achieved by the addition of MI at an optimum concentration with the presence of BPA at a higher content.
机译：通过溶胶-凝胶法合成的有机-无机杂化材料是出色的固体基质，适用于螺恶嗪等光致变色染料，通过引入合适的添加剂可以进一步提高光致变色性能。这项工作描述了添加剂对溶胶-凝胶衍生的有机-无机杂化基质中螺恶嗪的光致变色强度（ΔA0），脱色率（k）和光稳定性的影响。它们包括氟代烷基硅烷（FAS），双酚A（BPA）和甲基咪唑（MI）。 FAS增强了ΔA0和光稳定性，但对k的影响很小。 BPA的含量越高，ΔA0越高，光稳定性越高，但k越低。 MI对ΔA0和k的影响不如BPA显着，并且有点复杂，而通过添加最佳浓度的MI和更高含量的BPA的存在，可实现光稳定性的显着改善。

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