The electrochemiluminescence (ECL) signal is largely determined by the electron transfer efficiency. Therefore, in the nanomaterial-involved ECL system, the structure-related electron distribution could affect the electron transfer efficiency and further alter the ECL intensity. These features make the design of versatile ECL-based analytical techniques for probing the correlated structure possible. And it is generally accepted that the increased crystallinity of nanomaterials usually leads to a uniform electron distribution, which provides higher conductivity. Therefore, the crystallinity-improved conductivity could facilitate electron transfer, promote the electrochemical activity of support materials, and boost the efficiency of the ECL reaction. In this study, we have demonstrated that the ECL signal of the graphitic carbon nitride reporter was proportional to the crystallinity of layered double hydroxides (LDHs), which meets the supposition well. On the basis of this phenomenon, an ECL-based crystallinity analysis approach has been established using CdAl-LDHs as the model materials. The universality of this proposed technique was further validated by the rapid and accurate crystallinity determination of ZnAl-LDH samples with diverse crystallinities. This work not only contributes an alternative to the X-ray diffraction technique for the rapid screening of crystallinity in layered materials but also opens a new avenue for the design of ECL-based structure analysis techniques toward nanomaterials and even organic materials by involving electron transfer regulation correlation.

中文翻译：

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用于层状材料快速结晶度分析的电子转移效率调节电化学发光

电化学发光（ECL）信号很大程度上取决于电子转移效率。因此，在涉及纳米材料的ECL系统中，与结构相关的电子分布可能会影响电子转移效率并进一步改变ECL强度。这些功能使得设计用于探测相关结构的通用的基于 ECL 的分析技术成为可能。人们普遍认为，纳米材料结晶度的增加通常会导致电子分布均匀，从而提供更高的电导率。因此，结晶度提高的电导率可以促进电子转移，促进支撑材料的电化学活性，并提高ECL反应的效率。在这项研究中，我们证明了石墨氮化碳报告剂的ECL信号与层状双氢氧化物（LDH）的结晶度成正比，这很好地满足了假设。基于这一现象，以 CdAl-LDHs 作为模型材料，建立了基于 ECL 的结晶度分析方法。通过快速、准确地测定不同结晶度的 ZnAl-LDH 样品的结晶度，进一步验证了该技术的普适性。这项工作不仅为快速筛选层状材料结晶度的X射线衍射技术提供了替代方案，而且通过涉及电子转移调控，为纳米材料甚至有机材料的基于ECL的结构分析技术的设计开辟了新途径相关性。