SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2023, Vol. 56 ›› Issue (4): 89-96.DOI: 10.1016/j.cjche.2022.06.034

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Polymeric assembled nanoparticles through kinetic stabilization by confined impingement jets dilution mixer for fluorescence switching imaging

Jingran Liu1, Yue Wu1, Jie Tang1, Tao Wang1, Feng Ni2, Qiumin Wu1, Xijiao Yang1, Ayyaz Ahmad3, Naveed Ramzan4, Yisheng Xu1   

  1. 1. State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China;
    2. Shanghai Shyndec Pharmaceutical Co., Ltd, Shanghai 200040, China;
    3. Department of Chemical Engineering, Muhammad Nawaz Sharif University of Engineering and Technology, Multan, Pakistan;
    4. Faculty of Chemical, Metallurgical, and Polymer Engineering, University of Engineering & Technology, Lahore, Pakistan
  • Received:2022-03-08 Revised:2022-06-12 Online:2023-06-13 Published:2023-04-28
  • Contact: Yisheng Xu,E-mail:yshxu@ecust.edu.cn
  • Supported by:
    This work was financially supported by the National Key Research and Development Program of the International Scientific and Technological Innovation Cooperation Project among Governments (2021YFE0100400), Science and Technology Innovation Action Plan of Shanghai (22501100500), and the international One Belt One Road Collaboration Project of Shanghai (18490740300). The authors greatly thank Prof. A. Kayitmazer Basak at the Bogazici University for providing helpful discussions in the preparation process of NPs.

Polymeric assembled nanoparticles through kinetic stabilization by confined impingement jets dilution mixer for fluorescence switching imaging

Jingran Liu1, Yue Wu1, Jie Tang1, Tao Wang1, Feng Ni2, Qiumin Wu1, Xijiao Yang1, Ayyaz Ahmad3, Naveed Ramzan4, Yisheng Xu1   

  1. 1. State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China;
    2. Shanghai Shyndec Pharmaceutical Co., Ltd, Shanghai 200040, China;
    3. Department of Chemical Engineering, Muhammad Nawaz Sharif University of Engineering and Technology, Multan, Pakistan;
    4. Faculty of Chemical, Metallurgical, and Polymer Engineering, University of Engineering & Technology, Lahore, Pakistan
  • 通讯作者: Yisheng Xu,E-mail:yshxu@ecust.edu.cn
  • 基金资助:
    This work was financially supported by the National Key Research and Development Program of the International Scientific and Technological Innovation Cooperation Project among Governments (2021YFE0100400), Science and Technology Innovation Action Plan of Shanghai (22501100500), and the international One Belt One Road Collaboration Project of Shanghai (18490740300). The authors greatly thank Prof. A. Kayitmazer Basak at the Bogazici University for providing helpful discussions in the preparation process of NPs.

Abstract: Traditional fluorescence switching molecules achieving the state change between on and off states commonly based on UV irradiation. However, it is worth noting that UV irradiation is harmful to both the cancer cells and the normal cells. To achieve fluorescence switching under visible wavelength and avoid complicate molecular design, a fluorophore of 2,4,5,6-tetrakis(carbazol-9-yl)-1,3-dicyanobenzene (4CzIPN) and a quencher of diarylethene (DAE) were physically incorporated within the biocompatible block copolymer poly(lactic-co-glycolic acid)-b-poly(ethylene glycol) (PLGA-b-PEG) to form 4CzIPN-DAE nanoparticles (NPs) through flash nanoprecipitation (FNP). By using the FNP method, the NPs were prepared within milliseconds in a confined impingement jets dilution (CIJ-D) mixer. Quenching and recovery of fluorescence could achieve in the presence of DAE under 475 nm and 560 nm irradiation. Appropriate structure and fluorescent properties of the nanoparticles can be tuned by external conditions for their efficient fluorescence resonance energy transfer (FRET) in a kinetic stabilization process. This NPs formation process was further optimized by varying the dilution ratio, Reynolds number (Re) and polymer concentration to modulate the mixing and particle nucleation and growth process. The size and fluorescence switching properties of the NPs were systematically investigated in solution and in cellular uptake experiments. This work is anticipated to provide a simple and highly effective engineering strategy for the modulation of fluorescence switching nanoparticles and beneficial to its engineering application.

Key words: Preparation, Kinetic stabilization, Flash nanoprecipitation, Nanoparticles, Fluorescence switch

摘要: Traditional fluorescence switching molecules achieving the state change between on and off states commonly based on UV irradiation. However, it is worth noting that UV irradiation is harmful to both the cancer cells and the normal cells. To achieve fluorescence switching under visible wavelength and avoid complicate molecular design, a fluorophore of 2,4,5,6-tetrakis(carbazol-9-yl)-1,3-dicyanobenzene (4CzIPN) and a quencher of diarylethene (DAE) were physically incorporated within the biocompatible block copolymer poly(lactic-co-glycolic acid)-b-poly(ethylene glycol) (PLGA-b-PEG) to form 4CzIPN-DAE nanoparticles (NPs) through flash nanoprecipitation (FNP). By using the FNP method, the NPs were prepared within milliseconds in a confined impingement jets dilution (CIJ-D) mixer. Quenching and recovery of fluorescence could achieve in the presence of DAE under 475 nm and 560 nm irradiation. Appropriate structure and fluorescent properties of the nanoparticles can be tuned by external conditions for their efficient fluorescence resonance energy transfer (FRET) in a kinetic stabilization process. This NPs formation process was further optimized by varying the dilution ratio, Reynolds number (Re) and polymer concentration to modulate the mixing and particle nucleation and growth process. The size and fluorescence switching properties of the NPs were systematically investigated in solution and in cellular uptake experiments. This work is anticipated to provide a simple and highly effective engineering strategy for the modulation of fluorescence switching nanoparticles and beneficial to its engineering application.

关键词: Preparation, Kinetic stabilization, Flash nanoprecipitation, Nanoparticles, Fluorescence switch