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通过替代剂诱导的外层微环境调制,在低正电位下增强基基基有机框架的电化学发光

Lin Cui¹, Yuncong Yang¹, Linlin Song¹

¹College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, 250014, China.

Small (Weinheim an der Bergstrasse, Germany)

|February 19, 2025

概括

结合有机框架 (HOF) 提供了增强的电化学发光 (ECL) 检测. 在基于氨酸的HOF上修改替代剂可显著增强ECL信号,用于敏感的化合物传感.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
超分子化学超分子化学

背景情况:

结合有机框架 (HOF) 为电化学发光 (ECL) 应用提供了一个多功能平台.
基于氨酸的HOF表现出可调节的特性,包括可溶性,稳定性和框架行为,这对于优化ECL至关重要.
在HOF中控制电荷传输是提高ECL信号强度的关键.

研究的目的:

综合和研究三个基于氨酸的HOFs的ECL性能:TDPP-HOF,TCPP-HOF和TCNPP-HOF.
了解外围替代剂 (二氨三亚,碳酸,酸) 对ECL效率的影响.
建立结构-属性关系,以优化ECL传感中的HOF.

主要方法:

合成基于氨酸的HOFs,具有不同的功能组.
使用氨酸作为核心活性剂进行电化学表征和ECL测量.
密度函数理论 (DFT) 计算用于研究电子属性和结合能.

主要成果:

与TCNPP-HOF和TCPP-HOF相比,TDPP-HOF显示出明显更高的ECL信号增强 (15.8和112.9倍).
在核心活性剂和HOF之间,TDPP-HOF表现出较低的带隙和更大的结合能 (ΔE),促进了内电荷转移 (ICT).
一个基于TDPP-HOF的ECL传感器已成功开发,用于敏感检测化合物.

结论:

基于氨酸的HOF的外围替代剂有效调整外层微环境,影响HOF活动和ECL性能.
具有优化的电子特性和核心活性剂相互作用的HOF显示出优异的ECL增强.
这项研究提出了通过HOF的合理设计来推进ECL检测的新策略.

关键词:

电化学发光的发光效应外层微环境调制外层微环境调制类化合物类化合物基于氨酸的气结合有机框架.替代剂替代剂是一种替代剂.

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