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首页> 外文期刊>Journal of the Brazilian Chemical Society >Nano-assembled supramolecular films from chitosan-stabilized gold nanoparticles and cobalt(II) phthalocyanine
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Nano-assembled supramolecular films from chitosan-stabilized gold nanoparticles and cobalt(II) phthalocyanine

机译：壳聚糖稳定的金纳米颗粒和酞菁钴（II）的纳米组装超分子膜

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摘要

In this work, we report the synthesis and characterization of gold nanoparticles (AuNPs) stabilized with chitosan (Chit), as well as the capability of this material to form multilayer films with cobalt(II) tetrasulfonated phthalocyanine (CoTsPc). The new hybrid material based on Chit-AuNPs and CoTsPc was characterized by several techniques, and the electrochemical properties of an ITO (indium tin oxide) electrode modified with Chit-AuNPs and CoTsPc were investigated. Chit-prevented AuNPs (diameter of 6.0 nm) agglomeration, forming a colloidal suspension that was stable for months. The interaction between the AuNPs and Chit-molecules occurs mainly through the CH2 and NH 3 ~+ groups from Chit. Supramolecular interaction was observed for multilayer films of Chit-AuNPs/CoTsPc, and the AuNPs influenced the redox properties of CoTsPc. The presence of the nanoparticles not only increased the electroactive area of the electrodes, but also the rate of charge-transfer, suggesting that this material is a very promising candidate for further applications in electrochemical devices.
机译：在这项工作中，我们报告了壳聚糖（Chit）稳定化的金纳米颗粒（AuNPs）的合成和表征，以及该材料与钴（II）四磺化酞菁钴（CoTsPc）形成多层膜的能力。通过几种技术对基于Chit-AuNPs和CoTsPc的新型杂化材料进行了表征，并研究了用Chit-AuNPs和CoTsPc改性的ITO（铟锡氧化物）电极的电化学性能。防止被Chit阻止的AuNP（直径为6.0 nm）的团聚，形成了稳定数月的胶体悬浮液。 AuNPs和Chit分子之间的相互作用主要通过Chit的CH2和NH 3〜+基团发生。在Chit-AuNPs / CoTsPc多层膜中观察到超分子相互作用，而AuNPs影响CoTsPc的氧化还原特性。纳米颗粒的存在不仅增加了电极的电活性面积，而且还增加了电荷转移速率，表明该材料是电化学设备中进一步应用的非常有希望的候选者。

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