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首页> 外文期刊>ACS applied materials & interfaces >One Stone, Two Birds: pH- and Temperature-Sensitive Nitrogen-Doped Carbon Dots for Multiple Anticounterfeiting and Multiple Cell Imaging
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One Stone, Two Birds: pH- and Temperature-Sensitive Nitrogen-Doped Carbon Dots for Multiple Anticounterfeiting and Multiple Cell Imaging

机译：一块石头，两只鸟：pH-和温度敏感的氮气掺杂碳点，用于多次抗抵抗和多个细胞成像

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摘要

Carbon dots (CDs) as new fluorescent materials with excellent fluorescence properties have shown enormous potential applications, especially in anticounterfeiting and cell imaging. Herein, nitrogen-doped CDs (NCDs) with excellent biocompatibility were prepared by a simple thermal sintering method. An extremely large red shift (similar to 130 nm) of the emission peak was observed when the excitation wavelength changes from 355 to 550 nm, indicating that NCDs are excellent fluorescent labeling materials for multiple cell imaging. On the other hand, NCDs showed obvious changes of emission intensity and peak position when the temperature increased from 223 to 323 K and the pH values changed from 1 to 13, respectively, which has been demonstrated by the "horse" pattern printed with NCD water-soluble fluorescent inks. The nontoxic NCDs dispersed in a multiple matrix are highly sensitive to excitation wavelength, temperature, and pH, indicating their great potential application in multiple anticounterfeiting and multiple cell imaging.
机译：碳点（CDS）作为具有优异荧光特性的新型荧光材料表现出巨大的潜在应用，尤其是抗抵抗和细胞成像。这里，通过简单的热烧结方法制备具有优异生物相容性的氮掺杂Cds（NCD）。当激发波长从355变为550nm时，观察到发射峰的极大的红色移位（类似于130nm），表明NCD是用于多个细胞成像的优异荧光标记材料。另一方面，当温度从223增加到323k时，NCD显示出发射强度和峰值位置的明显变化，并且PH值分别从1到13变为13，这已经通过用NCD水印刷的“马”模式证明了这一点 - 溶解荧光油墨。分散在多基质中的无毒NCD对激发波长，温度和pH值高度敏感，表明它们在多次抗抵抗和多个细胞成像中的巨大潜在应用。

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