响应式碳点嵌入式混合微凝用于铁的双感应 (III) 和酸
Neha Garg1, Armaandeep Kaur1, Savita Chaudhary1
1Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh 160014, India. schaudhary@pu.ac.in.
Journal of materials chemistry. B
|April 17, 2025
概括
一种使用微凝中化碳量子点 (NCQD) 的新型混合材料作为敏感传感器. 它可以连续检测铁离子和西普罗夫洛克萨,在防伪方面有应用.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 化学传感器 化学传感器
背景情况:
- 开发敏感和选择性传感器对于环境监测和安全至关重要.
- 混合材料通过组合不同的组件来提供独特的特性.
- 碳量子点 (CQD) 是用于传感应用的有希望的光材料.
研究的目的:
- 为了合成一种新型混合材料,将化碳量子点 (NCQD) 整合到一个化聚 (N-异烯胺-co-N-3-aminopropyl甲烯胺) (PNIPAM-co-APMH) 微凝中.
- 开发一种用于检测铁离子 (Fe3+) 和 (CIP) 的双重功能传感器.
- 探索该材料作为光墨水的潜力,用于防伪应用.
主要方法:
- 合成NCQDs@PNIPAM-co-APMH混合微凝的合成.
- 光光谱检测Fe3+ (关机) 和CIP (开机) 连续检测.
- 实现一个逻辑门框架,用于顺序传感.
- 分析真实样本以确定回收率.
主要成果:
- 混合材料的高量子产率为42%.
- 选择性检测Fe3+通过光火和CIP通过光恢复,检测极限 (LOD) 为0.41μM.
- 使用逻辑门框架成功连续"关闭"传感Fe3+和CIP.
- 在真实样本分析中,恢复率很高 (86-108%).
- 作为光墨水的实用性已被证明,用于防伪.
结论:
- NCQDs@PNIPAM-co-APMH混合微凝是一种高度敏感和选择性的双功能传感器.
- 该材料可以顺序检测Fe3+和CIP,在环境和安全领域有实际应用.
- 混合系统显示了先进的反假冒解决方案和信息安全的巨大潜力.
相关概念视频
03:45Formation of Complex Ions
18.8K
A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...
18.8K
02:51Metal-Ligand Bonds
19.3K
The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
19.3K
01:19Complexation Equilibria: The Chelate Effect
1.7K
In complexation reactions, metal atoms or cations interact with ligands to form donor-acceptor adducts called metal complexes. Ligands that bind through one donor site are monodentate, ligands with two donor sites are bidentate, and those with more than two donor sites are polydentate ligands. For example, ethylene diamine is a bidentate ligand that binds through two nitrogen donor atoms, forming a five-membered ring. EDTA is a polydentate ligand that binds through four oxygen and two nitrogen...
1.7K
01:18Titration of Polyprotic Base with a Strong Acid
4.7K
The titration of a polyprotic base such as sodium carbonate with a strong acid such as hydrochloric acid results in two equivalence points on the titration curve. At the first equivalence point, the carbonate ions in the base are completely converted to bicarbonate ions. The second equivalence point corresponds to the complete conversion of bicarbonate ions to carbonic acid, which dissociates into carbon dioxide and water. The region before the first equivalence point corresponds to the...
4.7K
00:39Complexometric Titration: Overview
10.9K
Complexometric titration involves the formation of a complex by reacting a metal ion with one or more ligands. A visual indicator often detects the end point of a complexometric titration. It is added to the metal solution before the titration, forming a stable metal–indicator complex and imparting color to the solution. As the titration approaches the equivalence point, the excess of the added ligand displaces the indicator from the metal–indicator complex, releasing the free...
10.9K
00:43Complexometric Titration: Ligands
2.5K
Different monodentate and polydentate ligands are used as complexing agents in complexometric titration reactions. The formation of complexes by mono- and bidentate ligands involves two or more intermediate steps, limiting their use as complexing agents. In comparison, polydentate ligands can form complexes with metal ions in a single-step process, facilitating sharper end points. This means polydentate ligands, such as amino carboxylic acid derivatives, are most commonly employed in...
2.5K