Rational design and structural regulation of near-infrared silver chalcogenide quantum dots

IF 11.3 1区化学 Q1 CHEMISTRY, PHYSICAL ACS Catalysis Pub Date : 2024-09-14 DOI:10.1007/s12274-024-6958-x

Zhen-Ya Liu, Wei Zhao, Li-Ming Chen, Yan-Yan Chen, Zhi-Gang Wang, An-An Liu, Dai-Wen Pang

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Abstract

Silver chalcogenides (Ag₂E; E = S, Se, or Te) quantum dots (QDs) have emerged as promising candidates for near-infrared (NIR) applications. However, their narrow bandgap and small exciton Bohr radius render the optical properties of Ag₂E QDs highly sensitive to surface and size variations. Moreover, the propensity for the formation of silver impurities and their low solubility product constants pose challenges in their controllable synthesis. Recent advancements have deepened our understanding of the relationship between the multi-hierarchical structure of Ag₂E QDs and their optical properties. Through rational design and precise structural regulation, the performance of Ag₂E QDs has been significantly enhanced across various applications. This review provides a comprehensive overview of historical and current progress in the synthesis and structural regulation of Ag₂E QDs, encompassing aspects such as size control, crystal structure engineering, and surface/interface engineering. Additionally, it discusses outstanding challenges and potential opportunities in this field. The aim of this review is to promote the custom synthesis of Ag₂E QDs for applications in biological imaging, and optoelectronics applications.

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近红外卤化银量子点的合理设计与结构调控

铬化银（Ag2E；E = S、Se 或 Te）量子点（QDs）已成为近红外（NIR）应用的理想候选材料。然而，由于其带隙窄和激子玻尔半径小，Ag2E 量子点的光学特性对表面和尺寸变化非常敏感。此外，银杂质的形成倾向和它们的低溶度积常数也给它们的可控合成带来了挑战。最近的研究进展加深了我们对 Ag2E QDs 的多层结构与其光学特性之间关系的理解。通过合理的设计和精确的结构调整，Ag2E QDs 的性能在各种应用中得到了显著提高。本综述全面概述了 Ag2E QDs 的合成和结构调控方面的历史和当前进展，包括尺寸控制、晶体结构工程和表面/界面工程等方面。此外，本综述还讨论了这一领域的突出挑战和潜在机遇。本综述旨在促进 Ag2E QDs 的定制合成，以应用于生物成像和光电应用。

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来源期刊

ACS Catalysis CHEMISTRY, PHYSICAL-

CiteScore

20.80

自引率

6.20%

发文量

1253

审稿时长

1.5 months

期刊介绍： ACS Catalysis is an esteemed journal that publishes original research in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. It offers broad coverage across diverse areas such as life sciences, organometallics and synthesis, photochemistry and electrochemistry, drug discovery and synthesis, materials science, environmental protection, polymer discovery and synthesis, and energy and fuels. The scope of the journal is to showcase innovative work in various aspects of catalysis. This includes new reactions and novel synthetic approaches utilizing known catalysts, the discovery or modification of new catalysts, elucidation of catalytic mechanisms through cutting-edge investigations, practical enhancements of existing processes, as well as conceptual advances in the field. Contributions to ACS Catalysis can encompass both experimental and theoretical research focused on catalytic molecules, macromolecules, and materials that exhibit catalytic turnover.