基于金纳米粒子的pH传感比色传感器

IF 3.1 4区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Chemical Research in Chinese Universities Pub Date : 2008-09-01 DOI:10.1016/S1005-9040(08)60113-0

Lin ZHU , Dong-hua XUE , Zhen-xin WANG

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引用次数: 6

摘要

我们设计了一种基于金纳米粒子和pH敏感聚合物(十二烷基硫醚端功能化聚[2-(二乙胺)甲基丙烯酸乙酯]，聚(DEAEMA)- ddt)组成的金纳米复合材料的pH值敏感比色传感器。我们已经证明，这种设计可以在弱碱性条件下(pH=7.5)产生稳定的GNP沉淀，并且由于H+质子化的2-(二乙胺)甲基丙烯酸乙酯，这种沉淀可以分散在酸性溶液(pH=4.0)中。沉淀-分散过程是可逆的，并伴有肉眼可见的明显颜色变化。这一发展可能在可逆的ph敏感纳米结构和/或器件的控制制造中有应用。

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Gold Nanoparticle-based Colorimetric Sensor for pH Sensing

We present a newly designed colorimetric sensor sensitive to pH value based on a gold nanocomposite composed of gold nanoparticles and pH-sensitive polymer{dodecylthioether end functionalized poly[2-(diethylamino) ethyl methacrylate], poly(DEAEMA)-DDT}. We have shown that this design can produce stable GNP precipitate under weakly basic condition(pH=7.5) and this precipitate can be dispersed in acidic solution(pH=4.0), due to the 2-(diethylamino) ethyl methacrylate protonated by H⁺. The precipitation-dispersion process is reversible and accompanied by distinct color change that are clearly visible to the naked eye. This development may have application in the controlled fabrication of reversible pH-sensitive nanostructures and/or devices.

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来源期刊

Chemical Research in Chinese Universities 化学-化学综合

CiteScore

5.30

自引率

6.50%

发文量

152

审稿时长

3.0 months

期刊介绍： The journal publishes research articles, letters/communications and reviews written by faculty members, researchers and postgraduates in universities, colleges and research institutes all over China and overseas. It reports the latest and most creative results of important fundamental research in all aspects of chemistry and of developments with significant consequences across subdisciplines. Main research areas include (but are not limited to): Organic chemistry (synthesis, characterization, and application); Inorganic chemistry (bio-inorganic chemistry, inorganic material chemistry); Analytical chemistry (especially chemometrics and the application of instrumental analysis and spectroscopy); Physical chemistry (mechanisms, catalysis, thermodynamics and dynamics); Polymer chemistry and polymer physics (mechanisms, material, catalysis, thermodynamics and dynamics); Quantum chemistry (quantum mechanical theory, quantum partition function, quantum statistical mechanics); Biochemistry; Biochemical engineering; Medicinal chemistry; Nanoscience (nanochemistry, nanomaterials).