Preparation of fluorescent polyurethane microspheres and their applications as reusable sensor for 4-nitrophenol detection and as microplastics model for visualizing polyurethane in cells and zebrafish

Jiang, Xubao; Yan, Siqiang; Sun, Hao; Kong, Xiang Zheng; Li, Shusheng; Shi, Haoran; Zhu, Xiaoli; Gu, Xiangling

doi:10.1016/j.jcis.2024.06.070

Journal of Colloid and Interface Science

2024

DOI: 10.1016/j.jcis.2024.06.070

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Preparation of fluorescent polyurethane microspheres and their applications as reusable sensor for 4-nitrophenol detection and as microplastics model for visualizing polyurethane in cells and zebrafish

Xubao Jiang,

Siqiang Yan,

Hao Sun

et al.

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2024

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Cited by 2 publications

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Eu‐Doped Polyurethane with Efficient Multicolor Fluorescence, Self‐Healing, Stimuli‐Responsiveness and Its Diverse Applications

Wang,

Kong

et al. 2024

Adv Funct Materials

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Multicolor lanthanide‐doped polymers have found versatile applications in data encryption, sensing, and smart display. However, multiple components, sophisticated design, and complex preparation procedures are often required. In contrast, their intrinsic and multicolor fluorescence emission is been effectively used. Herein, Eu‐doped polyurethane (ETP@PU), integrating tunable multicolor emission, self‐healing, and multi‐responsiveness, is prepared through a facile route via step‐growth polymerization of PU using commercial Eu‐ligand (Eu(TTA)3Phen, ETP) as a fluorophore. FTIR and XPS analysis demonstrate the successful coordination of Eu3+ with carbamate groups of PU, which not only enhances the mechanical properties of PU but also bestows unique luminescent properties. With increasing ETP content, the intrinsic fluorescence of PU declines, while that of Eu displays a discernible enhancement, resulting in the tunable multicolor emission. The highest quantum yield of Eu‐related emission reaches 71.3% due to the robust coordination and efficient energy transfer between Eu3+ and PU. Moreover, the ETP@PU exhibits excellent self‐healing capacity and multi‐responsiveness, and their potential applications are also investigated in the field of light‐emitting diodes, data encryption, and self‐healing process monitoring. This work provides a facile and efficient strategy to develop multicolor lanthanide‐doped polymers promising for various applications.

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Eu‐Doped Polyurethane with Efficient Multicolor Fluorescence, Self‐Healing, Stimuli‐Responsiveness and Its Diverse Applications

Wang,

Kong

et al. 2024

Adv Funct Materials

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Facile Preparation of Raspberry-Like SiO₂@Polyurea Microspheres with Tunable Wettability and Their Application for Oil–Water Separation

Jiang,

Zhang,

Wang

et al. 2024

ACS Appl. Mater. Interfaces

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Raspberry-like microspheres have been widely used as superhydrophobic materials, photonic crystals, drug carriers, etc. Nevertheless, their preparation methods, usually consisting of multiple steps, are generally time-and energy-consuming. Herein raspberry-like SiO 2 @polyurea microspheres (SiO 2 @PUM) are readily prepared via a one-step precipitation polymerization of isophorone diisocyanate in a H 2 O/acetone mixture with the presence of SiO 2 particles. The sphere size, surface roughness, and SiO 2 content of SiO 2 @PUM are easily adjustable by varying the experimental conditions. TEM and SEM observations reveal that the final SiO 2 @PUM exhibits a core−shell structure, with polyurea (PU) in the core and SiO 2 particles as the shell. In the process, the SiO 2 particles were initially located on the PUM surface as a monolayer. With the reaction proceeding, the monolayer of SiO 2 particles became thicker, forming a thicker layer of SiO 2 particles on PUM due to the accumulation of SiO 2 particles, leading to a multilayer structure of SiO 2 particles on the shell of SiO 2 @PUM. The formation mechanism of the raspberry-like SiO 2 @PUM was thoroughly discussed and ascribed to electrostatic attraction between the positively charged PU and negatively charged SiO 2 particles. Once dried, SiO 2 @PUM was superhydrophobic and turned hydrophilic if water-wetted. Using a layer of SiO 2 @PUM, effective separation with good reusability for a variety of oil−water mixtures was achieved regardless of the oil density and types of oil−water emulsions. This work presents a novel protocol for the preparation of raspberry-like microspheres with tunable wettability via a rapid and green process, and the resulting microspheres are highly effective for the separation of diverse types of oil−water mixtures.

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Preparation of fluorescent polyurethane microspheres and their applications as reusable sensor for 4-nitrophenol detection and as microplastics model for visualizing polyurethane in cells and zebrafish

Cited by 2 publications

References 74 publications

Eu‐Doped Polyurethane with Efficient Multicolor Fluorescence, Self‐Healing, Stimuli‐Responsiveness and Its Diverse Applications

Eu‐Doped Polyurethane with Efficient Multicolor Fluorescence, Self‐Healing, Stimuli‐Responsiveness and Its Diverse Applications

Facile Preparation of Raspberry-Like SiO₂@Polyurea Microspheres with Tunable Wettability and Their Application for Oil–Water Separation

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Preparation of fluorescent polyurethane microspheres and their applications as reusable sensor for 4-nitrophenol detection and as microplastics model for visualizing polyurethane in cells and zebrafish

Cited by 2 publications

References 74 publications

Eu‐Doped Polyurethane with Efficient Multicolor Fluorescence, Self‐Healing, Stimuli‐Responsiveness and Its Diverse Applications

Eu‐Doped Polyurethane with Efficient Multicolor Fluorescence, Self‐Healing, Stimuli‐Responsiveness and Its Diverse Applications

Facile Preparation of Raspberry-Like SiO2@Polyurea Microspheres with Tunable Wettability and Their Application for Oil–Water Separation

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Product

Resources

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Facile Preparation of Raspberry-Like SiO₂@Polyurea Microspheres with Tunable Wettability and Their Application for Oil–Water Separation