Phase transfer-based synthesis of highly stable, biocompatible and the second near-infrared-emitting silver sulfide quantum dots

被引：23

作者：

Zhao, Yanxia ^{[1
]}

Song, Zhenmin ^{[2
]}

机构：

[1] Shandong Acad Med Sci, Jinan 250062, Peoples R China

[2] Liaocheng Peoples Hosp, Liaocheng 252000, Peoples R China

来源：

MATERIALS LETTERS | 2014年 / 126卷

基金：

中国国家自然科学基金;

关键词：

Luminescence; Phase transformation; Nanoparticles; Silver sulfide; Quantum dots; IN-VIVO; NANOPARTICLES; WINDOW;

D O I：

10.1016/j.matlet.2014.04.014

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Previously reported silver sulfide (Ag2S) quantum dots (QDs) emitting in the second near-infrared window (NIR-II, 1000-1400 nm) showed the capacity of in vitro and in vivo bioimaging. Herein, we reported a facile phase transfer- based synthesis to achieve water-dispersed NIR-II-emitting Ag2S QDs. After undergoing phase transfer of Ag+ ions from water to toluene, and the synthesis of Ag2S in toluene followed by ligand exchange, Ag2S QDs were favorably prepared. A series of characterizations confirmed that the prepared products were monoclinic alpha-Ag2S, showing an average size of 3.7 nm. The Ag2S QDs exhibited the maximum emission located at 1045 nm, high PL stability and low cytotoxicity, indicating the feasibility of Ag2S QDs for effective bioimaging in NIR-II biological window. (C) 2014 Elsevier B.V. All rights reserved.

引用

收藏

页码：78 / 80

页数：3

相关论文

共 22 条

[1] Preparation and characterization of polymer thin films containing silver and silver sulfide nanoparticles [J].

Akamatsu, K ;

Takei, S ;

Mizuhata, M ;

Kajinami, A ;

Deki, S ;

Takeoka, S ;

Fujii, M ;

Hayashi, S ;

Yamamoto, K .

THIN SOLID FILMS, 2000, 359 (01) :55-60

[2] PbS quantum dots with stable efficient luminescence in the near-IR spectral range [J].

Bakueva, L ;

Gorelikov, I ;

Musikhin, S ;

Zhao, XS ;

Sargent, EH ;

Kumacheva, E .

ADVANCED MATERIALS, 2004, 16 (11) :926-929

[3] Cation Exchange-Based Facile Aqueous Synthesis of Small, Stable, and Nontoxic Near-Infrared Ag2Te/ZnS Core/Shell Quantum Dots Emitting in the Second Biological Window [J].

Chen, Chi ;

He, Xuewen ;

Gao, Li ;

Ma, Nan .

ACS APPLIED MATERIALS & INTERFACES, 2013, 5 (03) :1149-1155

[4] DYNAMIC LIGHT-SCATTERING STUDY OF INTERNAL MOTIONS OF POLYMER COILS IN DILUTE-SOLUTION [J].

CHU, B ;

WANG, ZL ;

YU, JQ .

MACROMOLECULES, 1991, 24 (26) :6832-6838

[5] Near-infrared Photoluminescent Ag2S Quantum Dots from a Single Source Precursor [J].

Du, Yaping ;

Xu, Bing ;

Fu, Tao ;

Cai, Miao ;

Li, Feng ;

Zhang, Yan ;

Wang, Qiangbin .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2010, 132 (05) :1470-+

[6] In Vivo Fluorescence Imaging with Ag2S Quantum Dots in the Second Near-Infrared Region [J].

Hong, Guosong ;

Robinson, Joshua T. ;

Zhang, Yejun ;

Diao, Shuo ;

Antaris, Alexander L. ;

Wang, Qiangbin ;

Dai, Hongjie .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2012, 51 (39) :9818-9821

[7] Water-soluble Ag2S quantum dots for near-infrared fluorescence imaging in vivo [J].

Jiang, Peng ;

Zhu, Chun-Nan ;

Zhang, Zhi-Ling ;

Tian, Zhi-Quan ;

Pang, Dai-Wen .

BIOMATERIALS, 2012, 33 (20) :5130-5135

[8] Magnetic mesoporous silica microspheres with thermo-sensitive polymer shell for controlled drug release [J].

Liu, Congying ;

Guo, Jia ;

Yang, Wuli ;

Hu, Jianhua ;

Wang, Changchun ;

Fu, Shoukuan .

JOURNAL OF MATERIALS CHEMISTRY, 2009, 19 (27) :4764-4770

[9] Monodispersed InP quantum dots prepared by colloidal chemistry in a noncoordinating solvent [J].

Lucey, DW ;

MacRae, DJ ;

Furis, M ;

Sahoo, Y ;

Cartwright, AN ;

Prasad, PN .

CHEMISTRY OF MATERIALS, 2005, 17 (14) :3754-3762

[10] Size and shape control of monodisperse FePt nanoparticles [J].

Nandwana, Vikas ;

Elkins, Kevin E. ;

Poudyal, Narayan ;

Chaubey, Girija S. ;

Yano, Kazuaki ;

Liu, J. Ping .

JOURNAL OF PHYSICAL CHEMISTRY C, 2007, 111 (11) :4185-4189