Long wavelength emission multicolor fluorescent carbon quantum dots for the detection of pH, amino acids, and metal ions

IF 4.4 3区化学 Q2 CHEMISTRY, PHYSICAL

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2023-10-01 Epub Date: 2023-06-28 DOI:10.1016/j.jphotochem.2023.114967

Rui Wang , Simin He , Wanjing Liu, Hebing Pei, Nijuan Liu, Ruibin Guo, Zunli Mo

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引用次数: 1

Abstract

Carbon quantum dots are widely used in the field of analysis and detection due to their excellent optical properties. At present, many studies have focused on the preparation of multi-color fluorescent quantum dots by simple methods. Inspired by this, carbon quantum dots with green (G-CQDs) and yellow fluorescence (YN-CQDs) emission were prepared by hydrothermal method using PTCDA and urea as precursors. After characterizing their morphology, structure, and optical properties, fluorescent probes for different purposes were constructed according to their different fluorescence characteristics. Since green G-CQDs are sensitive to acidic environments, pH detection kits are developed. In addition, G-CQDs can also efficiently detect Asp. YN-CQDs are used to detect metal ions and can specifically detect Fe³⁺. Both of them were applied to the detection of actual samples, showing high efficiency and reliability. It provides a new idea for the multi-purpose detection of carbon quantum dot fluorescent probes.

Abstract Image

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长波长发射多色荧光碳量子点，用于pH值、氨基酸和金属离子的检测

碳量子点由于其优异的光学特性，在分析和检测领域得到了广泛的应用。目前，许多研究都集中在用简单的方法制备多色荧光量子点上。受此启发，以PTCDA和尿素为前驱体，采用水热法制备了具有绿色荧光(G-CQDs)和黄色荧光(n - cqds)的碳量子点。在对其形态、结构和光学性质进行表征后，根据其不同的荧光特性构建了不同用途的荧光探针。由于绿色G-CQDs对酸性环境敏感，因此开发了pH检测试剂盒。此外，G-CQDs还能有效地检测Asp。n - cqd用于检测金属离子，可以特异性检测Fe3+。将两种方法应用于实际样品的检测，均具有较高的效率和可靠性。为碳量子点荧光探针的多用途检测提供了新的思路。

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来源期刊

Journal of Photochemistry and Photobiology A-chemistry 化学-物理化学

CiteScore

7.90

自引率

7.00%

发文量

580

审稿时长

48 days

期刊介绍： JPPA publishes the results of fundamental studies on all aspects of chemical phenomena induced by interactions between light and molecules/matter of all kinds. All systems capable of being described at the molecular or integrated multimolecular level are appropriate for the journal. This includes all molecular chemical species as well as biomolecular, supramolecular, polymer and other macromolecular systems, as well as solid state photochemistry. In addition, the journal publishes studies of semiconductor and other photoactive organic and inorganic materials, photocatalysis (organic, inorganic, supramolecular and superconductor). The scope includes condensed and gas phase photochemistry, as well as synchrotron radiation chemistry. A broad range of processes and techniques in photochemistry are covered such as light induced energy, electron and proton transfer; nonlinear photochemical behavior; mechanistic investigation of photochemical reactions and identification of the products of photochemical reactions; quantum yield determinations and measurements of rate constants for primary and secondary photochemical processes; steady-state and time-resolved emission, ultrafast spectroscopic methods, single molecule spectroscopy, time resolved X-ray diffraction, luminescence microscopy, and scattering spectroscopy applied to photochemistry. Papers in emerging and applied areas such as luminescent sensors, electroluminescence, solar energy conversion, atmospheric photochemistry, environmental remediation, and related photocatalytic chemistry are also welcome.