We have used the same biomimetic receptor, a specific molecularly imprinted polymer (MIP), on two different plasmonic plastic optical fiber (POF) sensors to measure how the optical response influences the chemical response. To obtain two surface plasmon resonance (SPR) platforms, we have used two different overlayers between the core of the POF and the gold film. These overlayers, with a refractive index higher than that of the POF’s core [poly(methyl methacrylate) (PMMA)], have been used to improve the performances of the plasmonic sensor. As overlayers, we have deposited a photoresist (Microposit S1813), in two different aging conditions, namely, before and after its expiry date. In this article, we have demonstrated how the alteration in the photoresist changes the sensor’s performances and eventually the chemical response of the MIPs. More specifically, we have compared the MIPs responses of these two SPR-POF platforms in two different refractive index ranges. For this purpose, an MIP receptor already tested in the detection of perfluorinated compounds (PFAs) in water has been exploited.

中文翻译：

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测量沉积在由不同光刻胶缓冲层实现的两个 SPR-POF 传感器上的 MIP 响应

我们在两个不同的等离子体塑料光纤 (POF) 传感器上使用了相同的仿生受体，一种特定的分子印迹聚合物 (MIP)，以测量光学响应如何影响化学响应。为了获得两个表面等离子体共振 (SPR) 平台，我们在 POF 的核心和金膜之间使用了两个不同的覆盖层。这些覆盖层的折射率高于 POF 的核心 [聚甲基丙烯酸甲酯 (PMMA)]，已被用于提高等离子体传感器的性能。作为覆盖层，我们在两种不同的老化条件下沉积了光刻胶 (Microposit S1813)，即在其到期日期之前和之后。在本文中，我们展示了光刻胶的变化如何改变传感器的性能以及最终 MIP 的化学响应。更具体地说，我们比较了这两个 SPR-POF 平台在两个不同折射率范围内的 MIP 响应。为此，已经在检测水中全氟化合物 (PFA) 中测试了 MIP 受体。