Enhancement of Dye Dispersibility in Silica Hybrids through Local Heating Induced by the Imidazolium Group under Microwave Irradiation
Enhancement of Dye Dispersibility in Silica Hybrids through Local Heating Induced by the Imidazolium Group under Microwave Irradiation
复制标题
微波辐射下咪唑基团诱导局部加热提高二氧化硅杂化物中染料的分散性
DOI：
10.1038/pj.2013.81
复制
发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Y.
中科院分区：
文献类型：
--
作者：
Kajiwara;Y.; Tanaka;K.; Chujo;Y.
以1-（三甲氧基硅丙基）-3-甲基咪唑氯为原料，在微波辐照下进行溶胶-凝胶反应制备了含咪唑硅杂化膜。此外，我们将芘和1-芘甲醛等疏水性染料加入到硅杂化物中，并研究了这些染料在基质中的分散行为。在微波照射下局部加热咪唑基团有助于提高溶胶-凝胶过程中的反应速率。最后，与传统加热相比，我们在硅杂化中获得了更高的染料浓度。
We prepared imidazolium-containing silica hybrid films by sol–gel reactions of 1-(trimethoxysilylpropyl)-3-methylimidazolium chloride under microwave irradiation. Furthermore, we incorporated hydrophobic dyes such as pyrene and 1-pyrenecarboxaldehyde into the silica hybrids, and we investigated the dispersion behaviors of these dyes in the matrices. The local heating of the imidazolium groups under microwave irradiation was suggested to contribute to the enhancement of reaction rates in the sol–gel process. Finally, we achieved the incorporation of higher dye concentrations in the silica hybrids compared with those achieved with conventional heating.