Providing multicolor plasmonic patterns with graphene quantum dots functionalized d-penicillamine for visual recognition of V(V), Cu (II), and Fe(III): Colorimetric fingerprints of GQDs-DPA for discriminating ions in human urine samples,Journal of Molecular Recognition

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Providing multicolor plasmonic patterns with graphene quantum dots functionalized d-penicillamine for visual recognition of V(V), Cu (II), and Fe(III): Colorimetric fingerprints of GQDs-DPA for discriminating ions in human urine samples
Journal of Molecular Recognition ( IF 2.3 ) Pub Date : 2021-09-10 , DOI: 10.1002/jmr.2936
Parinaz Abdollahiyan _{1,

2} , Hassan Heidari ₃ , Soheila Hassanzadeh ₄ , Mohammad Hasanzadeh _{2,

5} , Farzad Seidi ₁ , Paria Pashazadeh-Panahi ₆

Affiliation

In this study, a novel fluorescent probe (graphene quantum dots functionalized d-penicillamine [GQDs-DPA]) was developed for the selective identification of Cu²⁺, V⁵⁺, and Fe³⁺ among 26 types of metal ions, which considerably quench the fluorescence intensity of GQD. So, GQDs-DPA was applied as a simple fluorescent probe for facile metal ions recognition in standard solution. The proposed DPA-GQD supported amino acids respond to Cu²⁺, V⁵⁺, and Fe³⁺, with high sensitivity. The intensity of the fluorescence histogram of this probe significantly diminished in exposure to metal ions such as Cu(II), V(V), and Fe(III). Moreover, a microfluidic paper-based device (μPAD) was fabricated through a facile and cost-effective protocol. Cu²⁺, V⁵⁺, and Fe³⁺ can be selectively recognized by GQDs-DPA using μPAD by naked eye. Also, GQDs-DPA exhibits a linear response for the detection of ions in concentrations ranging from 0.01 to 1 ppm, with a low limit of quantification of 0.01 ppm in standards samples. The boosted color uniformity, low instrumental needs of the stamp, and disposability of μPADs enable the application of the proposed device for commercial applications in environmental science and technology.

中文翻译：

提供具有石墨烯量子点功能化 d-青霉胺的多色等离子体图案，用于视觉识别 V(V)、Cu (II) 和 Fe(III)：GQDs-DPA 的比色指纹，用于区分人尿样品中的离子

本研究开发了一种新型荧光探针（石墨烯量子点功能化 d-青霉胺 [GQDs-DPA]），用于选择性识别26 种金属离子中的 Cu ²⁺、V ⁵⁺和 Fe ³⁺ ，显着提高了淬灭 GQD 的荧光强度。因此，GQDs-DPA 被用作一种简单的荧光探针，用于在标准溶液中轻松识别金属离子。建议的 DPA-GQD 支持的氨基酸对 Cu ²⁺、V ⁵⁺和 Fe ^3+有反应，灵敏度高。该探针的荧光直方图强度在暴露于金属离子如 Cu(II)、V(V) 和 Fe(III) 时显着降低。此外，通过简便且具有成本效益的协议制造了微流体纸基装置（μPAD）。Cu ²⁺、V ⁵⁺和Fe ³⁺可以通过肉眼使用μPAD被GQDs-DPA选择性识别。此外，GQDs-DPA 对检测浓度范围为 0.01 至 1 ppm 的离子表现出线性响应，标准样品中的定量下限为 0.01 ppm。μPAD 提高的颜色均匀性、印章的低工具需求和一次性使用使得所提出的设备能够应用于环境科学和技术的商业应用。

更新日期：2021-11-18

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