Chem. J. Chinese Universities ›› 2020, Vol. 41 ›› Issue (4): 670.doi: 10.7503/cjcu20190715

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New Semiconducting Polymer Nanoparticles for Antibacterial Agent by the Synergetic Effect of Positive Charge and Photothermal Conversion

PAN Guoyong1,LI Yawen1,MA Lijun1,MA Yufan1,AI Wenting1,WANG Zhenguo1,HOU Xinhui1,Grigory V·Zyryanov2,3,WANG Zhuo1,*()   

  1. 1. State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China
    2. Ural Federal University Yekaterinburg 620002, Russian Federation
    3. Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, Yekaterinburg 620108, Russian Federation
  • Received:2019-12-30 Online:2020-04-10 Published:2020-02-26
  • Contact: Zhuo WANG E-mail:wangzhuo77@mail.buct.edu.cn
  • Supported by:
    This paper is supported by the Natural Science Foundation of China(81961138011, 21775010);the Beijing Natural Science Foundation, China(7192106);the Fundamental Research Funds for the Central Universities, China(K1901, XK1802-6)

Abstract:

Because of the abuse of antibiotics and the emergence of bacterial resistance, the new antibacterial agents are required urgently. Herein, we prepared semiconducting polymer nanoparticles(SP-PPh3 NPs) with synergistic antibacterial activity due to photothermal properties and positive charge. SP-PPh3 NPs have broad-spectrum antibacterial properties against Gram-negative Escherichia coli(E. coli) and Gram-positive Staphylococcus aureus(S. aureus). The photothermal conversion efficiency of SP-PPh3 NPs is 43.8%. Moreover, the positive charge of SP-PPh3 NPs can adhere to bacteria, which is helpful to transmit heat to bacteria effectively. Under the synergistic effect of heat and positive charge, the antibacterial rates of E. coli and S. aureustreated with SP-PPh3 NPs are 99.9% and 98.6% in vitro, respectively. In addition, SP-PPh3 NPs have good biocompatibility and have almost no side effects on the major organs of mice. The bacteria-infected skin wounds on mice can completely heal after 12 d treated with SP-PPh3 NPs.

Key words: Semiconducting polymer, Positively charged nanoparticles, Photothermal conversion, Antibacterial

CLC Number: 

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