基于量子点的 "指纹 "标记，具有时间分辨发光功能，可用于燃料标记

IF 3.8 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials Pub Date : 2024-11-21 DOI:10.1016/j.optmat.2024.116462

Dmitriy O. Sagdeev, Yuriy G. Galyametdinov

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引用次数: 0

摘要

该研究探讨了基于具有不同发光寿命的半导体量子点创建发光 "指纹 "标签的可能性。研究建议使用时间分辨发光光谱学来分离不同标签成分的光谱。这项工作制备出了由两种成分组成的发光标签：发光寿命在纳秒范围内的核壳 CdSe/CdS/ZnS 量子点和发光时间为几百微秒的顺磁性 Cd0.9Mn0.1S/ZnS 量子点。利用发光光谱测定了基于量子点的指示剂的检测浓度极限，并与之前研究的类似物进行了比较。确定了具有双峰发光的指示剂组成中不同量子点的最佳比例。

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Quantum dots based “fingerprint” markers with time-resolved luminescence for fuel labeling

The study examines the possibility of creating the luminescent “fingerprint” labels based on semiconductor quantum dots with different luminescence lifetimes. It is proposed to separate the spectra of different label components using time-resolved luminescence spectroscopy. The work produces luminescent labels consisting of two components: core-shell CdSe/CdS/ZnS quantum dots with the luminescence lifetimes in the nanosecond range and paramagnetic Cd_0.9Mn_0.1S/ZnS quantum dots, emitting for several hundred microseconds.

It is shown that the luminescence of quantum dots is not quenched when they are dispersed in gasoline. The concentration limits of detection of indicators based on quantum dots are determined using luminescence spectroscopy, which were compared with previously studied analogs. Optimum ratios of different quantum dots in the composition of the indicator with bimodal luminescence are determined.

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来源期刊

Optical Materials 工程技术-材料科学：综合

CiteScore

6.60

自引率

12.80%

发文量

1265

审稿时长

38 days

期刊介绍： Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials. OPTICAL MATERIALS focuses on: • Optical Properties of Material Systems; • The Materials Aspects of Optical Phenomena; • The Materials Aspects of Devices and Applications. Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.