Carbon dots (CDs) are a new class of materials which have been extensively studied due to their unique optical properties, low toxicity, and abundance of raw materials to synthesize them. In this minireview, it is highlighted that the stability of the optical properties of CDs is an important aspect that has received very little attention. While CDs are usually considered to be photostable, several recent reports show they are prone to photobleaching. Studies of blinking, photobleaching, and photoswitching of CDs are reviewed here. It is noted that there is a lack of systematic studies about the photostability of CDs, and efforts are needed to further study this aspect. Furthermore, it is observed that the stability of CDs is somewhat related to their photoluminescence quantum yield, excitation dependence of PL emission, precursor, and synthesis method used to produce CDs.

中文翻译：

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碳点及其光学性质的稳定性

碳点（CD）是一类新的材料，由于其独特的光学特性，低毒性和大量的合成原料而受到了广泛的研究。在本小型复习中，强调了CD光学特性的稳定性是一个非常受关注的重要方面。尽管CD通常被认为是光稳定的，但最近的一些报告显示它们很容易发生光漂白。CD的闪烁，光漂白和光切换的研究在这里进行了综述。应当指出，关于CD的光稳定性，缺乏系统的研究，需要作出努力以进一步研究这一方面。此外，观察到CD的稳定性与CD的光致发光量子产率，PL发射的激发依赖性，前体，