Key Laboratory of Chemical Biology of Hebei Province, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, College of Chemistry & Environmental Science, Hebei University, Baoding 071002, China.
Department of Pharmacy, Shenzhen Luohu People's Hospital, Shenzhen, 518001, China.
Chem Commun (Camb). 2020 Sep 22;56(75):10982-10988. doi: 10.1039/d0cc04341a.
Sulfur nanodots (S-dots), composed of an elemental sulfur core and surface ligands, show unexpected photoluminescence (PL) properties, with the unique features of nontoxicity, hydrophilicity, high stability and easy modification. This review systematically introduces the synthesis methods, characterization, PL mechanisms and some typical applications of S-dots in chemical sensing. As the PL quantum yield (QY) is a key factor to evaluate the performance of luminescent materials, we report the synthesis methods according to the achievement in the promotion of PL QY. The PL mechanisms of S-dots are discussed from the view of the effects of the elemental sulfur core and passivated ligands on the PL QY and emission color. The design principle of analytical methods for various target molecules using S-dots is introduced. We end this review with the conclusions and some challenges in this field, which is expected to provide some clues for researchers in this field.
硫纳米点（S-dots）由元素硫核心和表面配体组成，具有意想不到的光致发光（PL）特性，具有无毒、亲水性、高稳定性和易于修饰等独特特点。本综述系统介绍了 S-dots 在化学传感中的合成方法、表征、PL 机制和一些典型应用。由于光致发光量子产率（QY）是评估发光材料性能的关键因素，我们根据提高 PLQY 的成就报告了合成方法。从元素硫核心和钝化配体对 PLQY 和发射颜色的影响的角度讨论了 S-dots 的 PL 机制。介绍了使用 S-dots 设计分析各种目标分子的分析方法的设计原理。我们以该领域的结论和一些挑战结束了这篇综述，这有望为该领域的研究人员提供一些线索。
