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Light modulation (vis-NIR region) based on lanthanide complex-functionalized carbon dots

机译：基于镧系元素复合官能化碳点的光调制（Vis-Nir区域）

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A new kind of carbon dots with an average diameter of approximately 3–5 nm were synthesized using L -lysine. Subsequently, a series of lanthanide complex-functionalized carbon dots were designed and synthesized, denoted as Ln-CDs (Ln = Eu, Sm, Er, Yb, Nd). In addition, by changing the ratio of Eu complexes and carbon dots, four kinds of Eu complex-functionalized carbon dots were also obtained (Eu-CDs-1, Eu-CDs-2, Eu-CDs-3, Eu-CDs-4). The derived nanomaterials were characterized by Fourier-transform infrared (FT-IR) spectroscopy, transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and fluorescence spectroscopy. Upon visible-light excitation, these lanthanide complex-functionalized carbon dots show multicolor visible (Eu; with red, orange, grey and blue colors, respectively) and near-infrared (Sm, Er, Nd, Yb) luminescence (emission covered from 400 nm to 1700 nm spectral region).
机译：使用L-ilysine合成平均直径约为3-5nm的新型碳点。随后，设计并合成了一系列镧系元素复合官能化的碳点，表示为LN-Cds（LN = Eu，Sm，ER，Yb，Nd）。另外，通过改变欧盟复合物和碳点的比例，还获得了四种欧盟复合官能化的碳点（Eu-Cds-1，Eu-CDS-2，Eu-CDS-3，Eu-CDS-4 ）。衍生的纳米材料的特征在于傅里叶变换红外（FT-IR）光谱，透射电子显微镜（TEM），X射线衍射（XRD），X射线光电子能谱（XPS）和荧光光谱。在可见光激发时，这些镧系元素复合官能化的碳点显示多色可见（欧盟;分别为红色，橙色，灰色和蓝色）和近红外（SM，ER，ND，YB）发光（从400覆盖的排放NM至1700nm光谱区域）。

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