Multivariate Metalloporphyrin-Based Covalent Organic Frameworks for Cataluminescence Signal Amplification

IF 7.3 1区化学 Q1 CHEMISTRY, ANALYTICAL

Analytical Chemistry Pub Date : 2026-10-20 Epub Date: 2026-09-30 DOI:10.1021/acs.analchem.6c04360

Ruidong Chen, Jincai Lu, Yaze Chen, Yuhao Liu, Chao Lu

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引用次数: 0

Abstract

Utilizing covalent organic frameworks (COFs) without postpyrolysis for cataluminescence (CTL) remains a challenge due to deficient thermocatalytic activity and uncontrollable bimetallic ratios. Herein, we presented a multivariate (MTV) metalloporphyrin-based COF (Cu_0.5/Ni_0.5-COF) embedded with nonpyrolysis and atomically dispersed bimetallic sites as a high-performance CTL platform. Interestingly, the Cu_0.5/Ni_0.5-COF catalyst exhibited an extraordinary signal amplification of diethyl ether-based CTL as a result of the maximum exposure of the bimetallic active centers and the enrichment of Lewis acid sites. The developed CTL sensor delivered a state-of-the-art sensing profile, including an ultrafast response time of 0.8 s, a wide linear range (0.1–15.0 mM), and a remarkable detection limit of 0.02 mM. The excellent performances of the as-prepared Cu_0.5/Ni_0.5-COF catalyst were ascribed to the profound synergistic interaction between the bimetallic porphyrin centers and the analyte for high-efficiency light emissions. This work opens a new avenue for engineering pristine COF-based CTL platforms.

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基于多元金属卟啉的催化发光信号放大共价有机框架

由于缺乏热催化活性和不可控的双金属比，利用未经后热解的共价有机框架（COFs）进行催化发光（CTL）仍然是一个挑战。在此，我们提出了一种多变量（MTV）金属卟啉基COF (Cu0.5/Ni0.5-COF)，嵌入非热解和原子分散的双金属位点作为高性能CTL平台。有趣的是，Cu0.5/Ni0.5-COF催化剂由于双金属活性中心的最大暴露和Lewis酸位点的富集，表现出了非同寻常的二乙醚基CTL信号放大。所开发的CTL传感器具有超快的响应时间为0.8 s，宽线性范围（0.1-15.0 mM）和显著的检测限为0.02 mM。制备的Cu0.5/Ni0.5-COF催化剂的优异性能归功于双金属卟啉中心与分析物之间的深度协同作用，从而实现了高效率的发光。这项工作为设计原始的基于cof的CTL平台开辟了新的途径。

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来源期刊

Analytical Chemistry 化学-分析化学

CiteScore

12.10

自引率

12.20%

发文量

1949

审稿时长

1.4 months

期刊介绍： Analytical Chemistry, a peer-reviewed research journal, focuses on disseminating new and original knowledge across all branches of analytical chemistry. Fundamental articles may explore general principles of chemical measurement science and need not directly address existing or potential analytical methodology. They can be entirely theoretical or report experimental results. Contributions may cover various phases of analytical operations, including sampling, bioanalysis, electrochemistry, mass spectrometry, microscale and nanoscale systems, environmental analysis, separations, spectroscopy, chemical reactions and selectivity, instrumentation, imaging, surface analysis, and data processing. Papers discussing known analytical methods should present a significant, original application of the method, a notable improvement, or results on an important analyte.