Carbon dots (CDs) with plenty of favorable properties have been extensively investigated in diverse areas including bioimaging, biomedicine, sensor, energy storage, anti-counterfeiting, photocatalysis, and optoelectronic devices. Herein, a simple, rapid, and green sonochemical-assisted method for fabricating nitrogen-doped CDs has been developed. In this approach, the nitrogen-doped CDs can be obtained through irradiation by intensive ultrasonic waves from ultrasonic probes in 30 min. The achieved CDs exhibit excellent water dispersibility, which can be ascribed to their high functionalization. Importantly, the CDs also demonstrate remarkable fluorescent properties, high photostability, and low cytotoxicity, which can be utilized for multicolor cellular imaging and anti-counterfeiting applications. As far as we know, the sonochemical-assisted method for rapidly synthesizing nitrogen-doped CDs from gelatin has never been reported before. Significantly, the sonochemical-assisted approach to rapidly fabricate CDs is versatile for the facile construction of fluorescent CDs, and the obtained CDs can be potentially used in various areas including bioimaging and anti-counterfeiting.

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用于细胞成像和防伪应用的碳点的快速绿色制造

具有大量有利性能的碳点（CD）已在生物成像，生物医学，传感器，能量存储，防伪，光催化和光电设备等各个领域进行了广泛研究。本文中，已经开发了一种简单，快速且绿色的声化学辅助方法来制造氮掺杂的CD。在这种方法中，可以通过在30分钟内用来自超声波探头的强力超声波照射来获得掺氮CD。所获得的CD显示出优异的水分散性，这归因于它们的高官能度。重要的是，CD还具有出色的荧光特性，高光稳定性和低细胞毒性，可用于多色细胞成像和防伪应用。据我们所知，以前从未报道过用声化学辅助方法从明胶中快速合成氮掺杂CD的方法。重要的是，用于快速制造CD的声化学辅助方法对于荧光CD的简便构造是通用的，并且所获得的CD可以潜在地用于包括生物成像和防伪在内的各个领域。