铜掺杂碳点选择性测定调节苯胺添加剂及安全染发

IF 5.7 2区化学 Q1 CHEMISTRY, ANALYTICAL

Analytica Chimica Acta Pub Date : 2025-04-14 DOI:10.1016/j.aca.2025.344071

Zhanghong Guo, Lin Zhou, Liping Zhang, Haining Cui, Jinxin Ma, Chan Wang, Qijun Song

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引用次数: 0

摘要

染发剂作为常见的日用化工产品，已经融入了人类的日常生活。然而，传统染发剂中含有的苯胺添加剂对健康构成潜在威胁。因此，开发一种环保、便捷的检测方法，探索安全的替代方法具有重要意义。在此背景下，酶催化技术因其安全性和环保性而受到广泛关注。结果以硫酸铜、苋菜红和氯化铵为原料，一步煅烧制备了具有漆酶样活性的掺杂铜碳点。合成的cucd为单分散椭球状晶体，平均直径为3.4 nm，活性铜中心与天然漆酶相似。酶动力学实验表明，该酶的最大速率常数（Vmax）是天然漆酶的59倍，Michaelis-Menten常数（Km）仅为天然漆酶的一半左右，表明其对漆酶底物具有较高的亲和力。与天然漆酶相比，CuCDs具有更强的稳定性，在较宽的pH值、温度和30天以上的储存条件下，其90%以上的催化活性都能保持。在氧气存在的情况下，CuCDs不仅可以催化邻苯二胺（OPD）和对苯二胺（PPD）的显色反应，从而实现对染发剂产品中苯胺类添加剂的选择性和快速定量，而且还可以在环境条件下催化多巴胺（DA）的聚合，用于染发。意义本工作不仅为染发剂中苯胺类添加剂的测定提供了一种有效的方法，而且为安全染发提供了新的途径，拓展了碳纳米材料在化妆品领域的应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Copper doped carbon dots for selective determination of regulated aniline additives and safe hair dyeing

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Copper doped carbon dots for selective determination of regulated aniline additives and safe hair dyeing

Background

Hair dyes, as common daily chemical products, have been integrated into human daily life. However, the aniline additives contained in traditional hair dyes pose potential threats to health. Therefore, it is of great importance to develop an eco-friendly and convenient detection method and to explore safe alternatives. In this context, enzymatic catalysis technology has received widespread attention due to its safety and eco-friendliness.

Results

Herein, copper-doped carbon dots (CuCDs) with laccase-like activity were prepared by a one-step calcination of copper sulfate, amaranth and ammonium chloride. The resultant CuCDs are monodispersed ellipsoidal crystals with an average diameter of 3.4 nm and active copper centers similar to that of natural laccase. Enzyme kinetics experiments demonstrated that the maximum rate constant (V_max) obtained from CuCDs is 59 times greater than that of natural laccase, and the Michaelis-Menten constant (K_m) is only about half that of natural laccase, indicating a high affinity for laccase substrate. The CuCDs also exhibited a superior stability in comparison with the natural laccase, as over 90 % of their catalytic activity can be maintained in wide pH, temperatures and more than 30 days storage. In the presence of oxygen, CuCDs can not only catalyze the chromogenic reaction of o-phenylenediamine (OPD) and p-phenylenediamine (PPD), allowing for the selective and rapid quantification of these aniline additives in hair dye products, but also catalyze the polymerization of dopamine (DA) under ambient conditions for hair dyeing.

Significance

This work not only provides an effective method for the determination of aniline additives in hair dyes, but also offers new approaches for safe hair dyeing, and expands the application of carbon nanomaterials in the cosmetics field.

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来源期刊

Analytica Chimica Acta 化学-分析化学

CiteScore

10.40

自引率

6.50%

发文量

1081

审稿时长

38 days

期刊介绍： Analytica Chimica Acta has an open access mirror journal Analytica Chimica Acta: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Analytica Chimica Acta provides a forum for the rapid publication of original research, and critical, comprehensive reviews dealing with all aspects of fundamental and applied modern analytical chemistry. The journal welcomes the submission of research papers which report studies concerning the development of new and significant analytical methodologies. In determining the suitability of submitted articles for publication, particular scrutiny will be placed on the degree of novelty and impact of the research and the extent to which it adds to the existing body of knowledge in analytical chemistry.