Effect of GPTMS functionalization on the improvement of the pH-sensitive methyl red photostability
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- 作者：Maria Rosaria PlutinoaAuthor Vitae ; Emanuela GuidobAuthor Vitae ; Claudio ColleonibAuthor Vitae ; Giuseppe Rosaceb ; giuseppe.rosace@unibg.it" class="auth_mail" title="E-mail the corresponding authorAuthor Vitae
- 关键词：Sol&ndash ; gel ; 3-Glycidoxypropyltrimethoxysilane ; Methyl red ; Hydrogen bonding ; pH-sensor
- 刊名：Sensors & Actuators: B. Chemical
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：238
- 期：Complete
- 页码：281-291
- 全文大小：2065 K
文摘
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Silylated Methyl Red was obtained by reaction between GPTMS and MR dyestuff.
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Ester covalent bond through reaction of Methyl Red and GPTMS was confirmed by NMR.
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Sol-gel derivative increases dyestuff photostability under acidic conditions.
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GPTMS avoids hydrogen bonding influence on the electron density of MR azo group.
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The dyestuff decolorization obeyed a first-order rate law.