A fluorescent monolayered two‐dimensional polymer (2DP) containing both tetraphenylethylene (TPE) and imine linkages is synthesized at air‐water interface using the Langmuir‐Blodgett method. We designed TPE‐based monomers with long distances between the TPE and the imine linkages to avoid the charge transfer and therefore keep the fluorescence. A monolayered 2DP provided with more than 104 μm² in domain size and around 0.8 nm thickness was obtained through a successive Schiff base reaction at air‐water interface. The nanostructures and fluorescent property of 2DP films were characterized by optical microscopy, SEM, TEM, AFM and fluorescence spectrum. Most importantly, the tip‐enhanced Raman spectroscopy (TERS) was utilized here to confirm the success of the polycondensation of monolayered 2DP.

中文翻译：

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通过动态亚胺化学界面合成单层荧光二维聚合物。

使用 Langmuir-Blodgett 方法在空气-水界面合成了含有四苯乙烯 (TPE) 和亚胺键的荧光单层二维聚合物 (2DP)。我们设计了基于 TPE 的单体，TPE 和亚胺键之间的距离较长，以避免电荷转移，从而保持荧光。通过空气-水界面上的连续席夫碱反应，获得了域尺寸超过104 μm ^{2 、厚度约为0.8 nm的单层2DP。}通过光学显微镜、SEM、TEM、AFM和荧光光谱对2DP薄膜的纳米结构和荧光性能进行了表征。最重要的是，这里利用尖端增强拉曼光谱（TERS）来确认单层 2DP 缩聚的成功。