Solution-Processable Two-Dimensional In 2 Se 3 Nanosheets as Efficient Photothermal Agents for Elimination of Bacteria

Two-dimensional (2D) nanoflakes represent an appealing class of materials for optoelectronics applications due to their unique layered structures and excellent electronic properties. However, the lack of easy-to-manipulate and effective methods for large-scale production of these 2D materials limits...

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Bibliographic Details
Published in:Chemistry : a European journal 2018-12, Vol.24 (71), p.19060-19065
Main Authors: Zhu, Chunli, Shen, Haijing, Liu, Haoyang, Lv, Xiaobo, Li, Zhihao, Yuan, Quan
Format: Article
Language:English
Subjects:
Anti-Bacterial Agents - chemistry
Anti-Bacterial Agents - pharmacology
Bacteria - drug effects
Bacteria - isolation & purification
Bacteria - radiation effects
Bacterial Infections - prevention & control
Humans
Hyperthermia, Induced - methods
Indium - chemistry
Indium - pharmacology
Infrared Rays
Models, Molecular
Nanostructures - chemistry
Nanostructures - ultrastructure
Phototherapy - methods
Selenium - chemistry
Selenium - pharmacology
Water Microbiology
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Summary:Two-dimensional (2D) nanoflakes represent an appealing class of materials for optoelectronics applications due to their unique layered structures and excellent electronic properties. However, the lack of easy-to-manipulate and effective methods for large-scale production of these 2D materials limits their potential for applications. Also, few efforts have been made to explore their applications in biological fields. This work reports the preparation of large quantities of 2D In Se nanosheets through a solvent exfoliation technique. Transmission electron microscopy and atomic force microscopy results show that the In Se nanosheets are obtained with lateral sizes of tens of nanometers to hundreds of nanometers and thickness of 2-17 layers. Raman features coupled with the X-ray diffractometry results unequivocally confirm the as-prepared In Se nanosheets to be α phase. Moreover, these α-In Se nanosheets exhibit an excellent near-infrared (NIR) photothermal performance under an 808 nm laser irradiation. NIR photo-excitation of the α-In Se nanosheets in the presence of bacteria leads to a significant antibacterial effect, suggesting that these nanosheets have great potential to be photothermal antibacterial agents. Our work on α-In Se nanosheets presents an available method for exfoliating 2D layered materials, and highlights the potential application in chemical and biological fields of α-In Se nanosheets.
ISSN:0947-6539
1521-3765
DOI:10.1002/chem.201804360