Design of acidochromic dyes for facile preparation of pH sensor layers
Design of acidochromic dyes for facile preparation of pH sensor layers
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DOI：
10.1007/s00216-008-2428-7
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发表时间：
2008-10
影响因子：
4.3
通讯作者：
G. Mohr;H. Müller;B. Bussemer;A. Stark;T. Carofiglio;S. Trupp;R. Heuermann;T. Henkel;D. Escudero;L. González
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文献类型：
--
作者：
G. Mohr;H. Müller;B. Bussemer;A. Stark;T. Carofiglio;S. Trupp;R. Heuermann;T. Henkel;D. Escudero;L. González
合成了八种新的酸致变色染料，可用于光学监测pH值范围从3到12。用密度泛函理论对其相应的pkg值进行了测量和理论计算。这些新染料的合成很容易，不需要色谱纯化。染料可以共价连接到含有羟基功能的聚合物，如纤维素、聚氨酯水凝胶和甲基丙烯酸羟烷基酯。由此产生的传感器层在紫外和可见光谱范围内都表现出显著的颜色变化。基于共价固定pH指示染料的传感器层显示出快速且完全可逆的颜色变化。
Eight new acidochromic dyes have been synthesised that can be used for optically monitoring pH in the range from 3 to 12. Their corresponding pKavalues have been both measured and calculated theoretically by means of density functional theory. The synthesis of these new dyes is facile without the need for chromatographic purification. The dyes can be covalently linked to polymers containing hydroxyl functions such as cellulose, polyurethane hydrogel, and hydroxyalkyl methacrylate. The resulting sensor layers exhibit significant colour changes both in the UV and in the visible spectral range.FigureSensor layers based on covalently immobilised pH indicator dyes show fast and fully reversible colour changes.