Lukianov Mikhail Y, Rubekina Anna A, Bondareva Julia V, Sybachin Andrey V, Diudbin George D, Maslakov Konstantin I, Kvashnin Dmitry G, Klimova-Korsmik Olga G, Shirshin Evgeny A, Evlashin Stanislav A
Skolkovo Institute of Science and Technology, 121205 Moscow, Russia.
Department of Physics, Lomonosov Moscow State University, 119991 Moscow, Russia.
Nanomaterials (Basel). 2023 Jun 30;13(13):1982. doi: 10.3390/nano13131982.
Extraordinary properties of two-dimensional materials make them attractive for applications in different fields. One of the prospective niches is optical applications, where such types of materials demonstrate extremely sensitive performance and can be used for labeling. However, the optical properties of liquid-exfoliated 2D materials need to be analyzed. The purpose of this work is to study the absorption and luminescent properties of MoS exfoliated in the presence of sodium cholate, which is the most often used surfactant. Ultrasound bath and mixer-assisted exfoliation in water and dimethyl sulfoxide were used. The best quality of MoS nanosheets was achieved using shear-assisted liquid-phase exfoliation as a production method and sodium cholate (SC) as a surfactant. The photoluminescent properties of MoS nanosheets varied slightly when changing the surfactant concentrations in the range C(SC) = 0.5-2.5 mg/mL. This work is of high practical importance for further enhancement of MoS photoluminescent properties via chemical functionalization.
二维材料的非凡特性使其在不同领域的应用中具有吸引力。其中一个潜在的细分领域是光学应用，这类材料在该领域展现出极其灵敏的性能，可用于标记。然而，需要分析液体剥离的二维材料的光学特性。这项工作的目的是研究在最常用的表面活性剂胆酸钠存在下剥离的MoS的吸收和发光特性。使用了超声浴以及在水和二甲基亚砜中通过混合器辅助进行剥离。以剪切辅助液相剥离作为生产方法并使用胆酸钠（SC）作为表面活性剂，可获得质量最佳的MoS纳米片。当表面活性剂浓度在C(SC) = 0.5 - 2.5 mg/mL范围内变化时，MoS纳米片的光致发光特性略有不同。这项工作对于通过化学功能化进一步增强MoS的光致发光特性具有很高的实际重要性。
