文章信息/Info

Title:

Recent Advances of Ag2S Near-Infrared Quantum Dots

作者:

張葉俊; 王強斌

中國科學院蘇州納米技術與納米仿生研究所

Author(s):

ZHANG Yejun;  WANG Qiangbin

Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences

關鍵詞:

Ag2S; 量子點; 近紅外二區; 成像

DOI:

10.7502/j.issn.1674-3962.2016.01.03

文獻標志碼:

A

摘要:

量子點作為一種發光納米晶，在過去二十年里一直是研究的熱點。這種研究的動力歸因于量子點獨特的光學性質，如熒光強度高、穩定性好、發射范圍寬、具有尺寸效應等。最近幾年，近紅外二區量子點因具有較高的組織穿透深度和較低的自發熒光受到了人們的廣泛關注，并且作為熒光探針在小動物活體體外和體內成像方面已得到應用。作為一種新型的近紅外二區量子點，Ag2S因其低毒、穩定性好、成本低、生物相容性好等優良性質，過去五年在國內外掀起了研究的熱潮。這篇綜述從Ag2S量子點的發展史、制備方法、異質結構、生物應用、毒理學研究等方面對國內外研究成果進行了總結，并著重概述了其制備方法。進一步，討論了其存在的問題以及對今后的研究進行了展望。

Abstract:

As light-emitting nanocrystals, quantum dots (QDs) have been a major focus of research during the past two decades. The impetus can be attributed to their unique optical properties, with high fluorescence intensity, high photostability, multiple fluorescence colors, and size-tunable light emission. In recent years, the second near-infrared window QDs have emerged as a fluorescent probe for in vitro and in vivo imaging for maximal penetration depth and minimize autofluorescence. As a new type of second near-infrared window QDs, Ag2S has attracted increasing attention for ultralow toxicity, high stability, low cost, and good biocompatibility in the past five years. This review summarized the history, synthetic method, heterostructure, biological applications, and toxicology research of Ag2S QDs from domestic and international research results, and emphatically outlines its synthetic method. Furthermore, the existing problems of Ag2S QDs are discussed, and the prospects of the related research are presente.