Synthesis and characterization of a vitamin B6-tetrazole hydrazone as a fluorescence probe for selective detection of Cd2+ and Ga3+ ions

IF 3.8 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials Pub Date : 2024-11-25 DOI:10.1016/j.optmat.2024.116493

Zavalishin M.N, Maltseva M.A, Osokin V.S, Aleksandriiskii V.V, Petrova U.A, Knyazeva A.A, Eroshin A.V, Zhabanov Yu.A, Gamov G.A

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Abstract

A simple selective fluorescence probe for cadmium(II) and gallium(III) ions was designed and prepared by a reaction of hydrazone formation between pyridoxal-5′-phosphate and 5-hydrazinyl-1H-tetrazole. The probe shows an enhanced blue fluorescence in the presence of Cd²⁺ ions and a yellow-green fluorescence in the presence of Ga³⁺ ions in aqueous DMSO. The conditional stability constants and stoichiometry of the Cd²⁺ and Ga³⁺ complexes were determined using the maximum likelihood method. Gallium(III) ions form two complexes of different structures with probe in solution. The DFT quantum chemical calculations were performed for obtaining molecular structures of probe 1 and its complexes with Ga³⁺ and Cd²⁺. Simulation of electronic absorption spectra and NMR spectra by TDDFT and GIAO methods allowed to determine the structures, which was obtained. The probe demonstrated a low detection limit of 0.19 μM for Cd²⁺ and 0.97 μM for Ga³⁺, making it suitable for water analysis. This research offers important insights into the design and enhancement of fluorescence probes for the selective detection of metal ions.

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维生素 B6-四唑腙的合成与表征--用作选择性检测 Cd2+ 和 Ga3+ 离子的荧光探针

通过吡哆醛-5′-磷酸和 5-肼基-1H-四唑之间的腙形成反应，设计并制备了一种针对镉（II）和镓（III）离子的简单选择性荧光探针。该探针在 DMSO 水溶液中，在 Cd2+ 离子存在下显示出增强的蓝色荧光，在 Ga3+ 离子存在下显示出黄绿色荧光。利用最大似然法确定了 Cd2+ 和 Ga3+ 复合物的条件稳定常数和化学计量学。镓（III）离子在溶液中与探针形成两种不同结构的络合物。为获得探针 1 及其与 Ga3+ 和 Cd2+ 复合物的分子结构，进行了 DFT 量子化学计算。通过 TDDFT 和 GIAO 方法模拟电子吸收光谱和核磁共振光谱，确定了探针 1 的结构。该探针的检测限很低，Cd2+ 为 0.19 μM，Ga3+ 为 0.97 μM，因此适用于水分析。这项研究为设计和增强用于选择性检测金属离子的荧光探针提供了重要启示。

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来源期刊

Optical Materials 工程技术-材料科学：综合

CiteScore

6.60

自引率

12.80%

发文量

1265

审稿时长

38 days

期刊介绍： Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials. OPTICAL MATERIALS focuses on: • Optical Properties of Material Systems; • The Materials Aspects of Optical Phenomena; • The Materials Aspects of Devices and Applications. Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.