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Volume 46 Number 5
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Volume 46 Number 4 Volume 46 Number 5

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Research articles

ScienceAsia 46 (2020): 595-601 |doi: 10.2306/scienceasia1513-1874.2020.082


Sharp fluorescence nanofiber network of CdSe/CdS core-shell nanoplatelets in polyvinylpyrrolidone


Dongni Hana, Lanlan Yangb, Zhongyi Hua, Zhonglin Dua, Yao Wanga, Ze Yuana, Qiao Wanga, Mikhail Artemyevb, Jianguo Tanga,*

 
ABSTRACT:     In this work, a novel nanofiber network of colloidal semiconductor CdSe/CdS nanoplatelets (NPLs)/polyvinylpyrrolidone (PVP) with characteristics of porous membranes has successfully been fabricated via the electrospinning technique, in which NPLs and PVP were used as fluorescence agent and fiber matrix, respectively. Firstly, the CdSe core NPLs with quasi 2D geometry was synthesized, and the epitaxial growth of the CdS shells was performed by the atomic layer deposition (c-ALD) method at room temperature. CdSe/CdS core-shell NPLs with a narrow, ca. 20 nm photoluminescence band were blended with PVP dissolved in ethanol-trichloroethylene mixture; and hybrid polymer-NPLs fibers were obtained through the electrospinning technique. The final nanofiber network exhibits the excellent optical properties of the NPLs, which has potential for separation and absorption of pollutants and isolation of microorganisms.

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a Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Science & Technology Cooperation on Hybrid Materials, Qingdao University, Qingdao 266071 China
b Research Institute for Physical Chemical Problems of the Belarusian State University, Minsk 220006 Belarus

* Corresponding author, E-mail: tang@qdu.edu.cn

Received 5 Jun 2020, Accepted 31 Aug 2020