伊萨丁-希夫基功能化石墨烯氧化物作为一种高度选择性的开启光探针,用于通过光诱导电子转移通路检测Pd (II)
Hamed Barzinmehr1, Maryam Mirza-Aghayan2, Maryam Heidarian2
1Department of Chemistry and Biochemistry, Baylor University, One Bear Place, Waco, TX 76798-7348, USA; Chemistry and Chemical Engineering Research Center of Iran (CCERCI), P. O. BOX 14335-186, Tehran, Iran.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy
|January 10, 2024
概括
我们开发了一种新型的伊萨丁-希夫基功能化石墨烯氧化物 (ISBGO) 化学传感器,用于高度选择性和敏感地检测离子. 即使在有干扰金属离子的情况下,ISBGO也对Pd (II) 呈现出强烈的开启光反应.
科学领域:
- 材料科学 材料科学 材料科学
- 分析化学 分析化学
- 纳米技术纳米技术
背景情况:
- 选择性和敏感的光化学传感器的开发对于检测金属离子至关重要.
- 氧化石墨烯 (GO) 由于其独特的特性,为传感器开发提供了一个多功能平台.
- 伊萨丁-希夫基因以其与金属离子的协调能力而闻名.
研究的目的:
- 为了合成和表征伊萨-施菲夫基功能化石墨烯氧化物 (ISBGO).
- 评估ISBGO作为一种选择性光化学传感器,用于发现 (Pd) 离子 (Pd) (II)).
- 研究ISBGO用于Pd (II) 检测的传感机制和性能.
主要方法:
- 通过氧化石墨烯的功能化合成ISBGO.
- 用于传感实验的光谱学 (在340nm激发,在504nm发射).
- 密度函数理论 (DFT) 和时间依赖的DFT (TD-DFT) 计算.
- 与其他23种金属离子进行干扰研究.
- 约伯的情节和贝内西-希尔德布兰德的分析.
- 在FT-IR光谱学.
主要成果:
- ISBGO对Pd(II) 具有较高的选择性,超过其他23种金属离子,光度增强10.1倍.
- 化学传感器在其他金属离子的存在下保持了高光强度,而没有显著的火.
- DFT的计算表明,光诱导的电子转移 (PET) 负责启动反应,被Pd (II) 协调阻断.
- ISBGO与Pd{\displaystyle Pd{\displaystyle Pd}{\displaystyle Pd}{\displaystyle Pd}{\displaystyle Pd}{\displaystyle Pd}{\displaystyle Pd}{\displaystyle Pd}{\displaystyle Pd}{\displaystyle Pd}{\displaystyle Pd}{\displaystyle Pd}{\displaystyle Pd}{\displaystyle Pd}{\displaystyle Pd}{\displaystyle Pd}{\displaystyle Pd}{\displaystyle Pd}{\displaystyle Pd}{\displaystyle Pd}{\displaystyle Pd}{\displaystyle Pd}{\displaystyle Pd}{\displaystyle Pd}{\Delta}{\Delta}{\Delta}{\Delta}}{\Delta}{\Delta}{\Delta}{\Delta}{\Delta}}{\Delta}{\Delta}{\Delta}{\Delta}{\Delta}{\Delta}{\Delta}{\Delta}}{\Delta}}}}{\Delta{\Delta}}}}}}
- 确定了3-iminoindolin-2-one部分的氨基氧和氨基为结合点.
- 实现了32nM的低检测极限和光量子产量的1.5倍增加.
结论:
- ISBGO 作为一种优秀的光探针,用于在水溶液中选择性和灵敏地检测Pd{\displaystyle Pd{\text{II}}).
- 开发的化学传感器提供了诸如高灵敏度,快速响应和良好的选择性等优势.
- 该机制涉及Pd(II) 与ISBGO协调后PET的阻塞.
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