Electrochemical surface plasmon resonance (ESPR) is a powerful technique for defining dynamic changes in chemical composition and morphology of functional interfaces by correlating spectral information with voltammetric characteristics of the electrode processes. However, conventional Kretschmann prism-based surface plasmon resonance (SPR) configurations require sophisticated apparatus and complex optics. Here, we present a versatile flow injection ESPR device that incorporates a plasmonic and conductive fiber optic probe, for which a gold nanohole array film is integrated onto the endface of a conventional optical fiber via template transfer. The coreactant-based ${\text{R}\text{u}(\text{b}\text{p}\text{y})}_3^{2+}$ / tripropylamine (TPrA) electrochemiluminescence (ECL) system, was chosen to unravel electrochemically-induced real-time interfacial information, since such an approach is increasingly employed for clinical assay analysis and the associated ECL mechanism is an active area of investigation. The ESPR observations provide novel experimental evidence to support the proposition that the ECL reactions undergo an oxidative-reduction pathway. Moreover, the ESPR peak shift exhibits a broader linear detection range of TPrA concentration (0.02–20 mmol L⁻¹, R² = 0.996), compared to the ECL and SPR techniques (<10 mmol L⁻¹). This study clearly demonstrates that the novel fiber optic ESPR device presents as a reliable and multimodal spectroelectrochemical platform to gain mechanistic insights into complicated chemical processes and provide sensing capabilities, while offering great simplicity, portability and miniaturization.

电化学表面等离振子共振（ESPR）是一种强大的技术，可通过将光谱信息与电极过程的伏安特性相关联来定义功能界面化学成分和形态的动态变化。但是，传统的基于克雷奇曼棱镜的表面等离子体共振（SPR）配置需要复杂的设备和复杂的光学器件。在这里，我们介绍了一种多功能的流动注射ESPR设备，该设备结合了等离子体和导电光纤探头，为此，通过模板转移将金纳米孔阵列膜集成到常规光纤的端面上。基于共反应物${\text{[R}\text{ü}（\text{b}\text{p}\text{ÿ}）}_3^{2+}$选择三丙胺（TPrA）电致发光（ECL）系统来揭示电化学诱导的实时界面信息，因为这种方法越来越多地用于临床测定分析，并且相关的ECL机制是研究的活跃领域。ESPR的观察结果提供了新的实验证据，以支持ECL反应经历氧化还原途径的主张。此外， 与ECL和SPR技术（<10 mmol L ^-1）相比，ESPR峰位移显示了更广泛的TPrA浓度线性检测范围（0.02–20 mmol L ^-1，R ² = 0.996）。）。这项研究清楚地表明，新型光纤ESPR装置可作为可靠的多峰光谱电化学平台，从而获得对复杂化学过程的机械洞察力并提供传感功能，同时提供极大的简便性，便携性和小型化。