A tunable fluorescence waterborne polyurethane-based Ln3+ (Ln=Eu,Tb) complex with antibacterial activity

Yang, Yuqing; Luo, Xiang; Yang, Mingdi; Zhang, Kehua; Xian, Yuxi; Wang, Ping; Ding, Yunsheng; Hu, Xianhai

doi:10.1016/j.porgcoat.2023.108117

Cited by 3 publications

(2 citation statements)

References 43 publications

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“…Zn-MOF exhibits antibacterial properties by releasing Zn 2+ ions (Figures c, S3), which can generate reactive oxygen species (ROS) that interact with bacterial cell membrane proteins, leading to bacterial structure damage, internalization, and eventual death of microorganisms. − While Eu-MOF exerts its antibacterial activity through the formation of a complex between rare earth ion Eu 3+ and ligand BBDC. The positive charge of the rare earth ion is transferred to the organic ligand, resulting in a positively charged ligand that interacts with the negatively charged bacterial cell membrane to achieve antibacterial effects …”

Section: Resultsmentioning

confidence: 99%

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Multifunctional Janus Membrane for Diabetic Wound Healing and Intelligent Monitoring

Liu,

Xi,

Yang

et al. 2024

ACS Appl. Mater. Interfaces

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The complex microenvironment of diabetic wounds often hinders the healing process, ultimately leading to the formation of diabetic foot ulcers and even death. Dual monitoring and treatment of wounds can significantly reduce the incidence of such cases. Herein, a multifunctional Janus membrane (3D chitosan sponge-ZE/polycaprolactone nanofibers-ZP) was developed by incorporating the zinc metal−organic framework, europium metal−organic framework, and phenol red into nanofibers for diabetic wound monitoring and treatment. The directional water transport capacity of the resulting Janus membrane allows for unidirectional and irreversible drainage of wound exudate, and the multifunctional Janus membrane creates up to a 99% antibacterial environment, both of which can treat wounds. Moreover, the pH (5−8) and H 2 O 2 (0.00−0.80 μM) levels of the wound can be monitored using the color-changing property of phenol red and the fluorescence characteristic of Eu-MOF on the obtained membrane, respectively. The healing stages of the wound can also be monitored by analyzing the RGB values of the targeted membrane images. This design can more accurately reflect the wound state and treat the wound to reduce bacterial infection and accelerate wound healing, which has been demonstrated in in vivo experiments. The results provide an important basis for early intervention in diabetic patients.

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Section: Resultsmentioning

confidence: 99%

“…The positive charge of the rare earth ion is transferred to the organic ligand, resulting in a positively charged ligand that interacts with the negatively charged bacterial cell membrane to achieve antibacterial effects. 53 3.5. Animal Experiment on Promoting Diabetic Wound Repair.…”

Section: Biocompatibilitymentioning

confidence: 99%

Multifunctional Janus Membrane for Diabetic Wound Healing and Intelligent Monitoring

Liu,

Xi,

Yang

et al. 2024

ACS Appl. Mater. Interfaces

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A waterborne polyurethane‐based fluorescent tunable carbon quantum dot

Cheng,

Hu,

Chen

et al. 2024

Journal of Polymer Science

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Fluorescent tunable materials have potential applications in lighting, display, anti‐counterfeiting, biological probes, and so on. Herein, carbon quantum dots (CQDs) with blue fluorescence (BCDs), and yellow fluorescence (YCDs) were synthesized by solvothermal method using bio‐based citric acid and lignin as carbon sources, respectively. BCDs and YCDs were anchored on polyurethane chains to prepare waterborne polyurethane‐based blue fluorescent carbon quantum dots (BCDs1.0‐WPU) and waterborne polyurethane‐based yellow fluorescent carbon quantum dots (YCDs1.0‐WPU), respectively. Compared with the corresponding BCDs and YCDs, the fluorescence intensity of both BCDs1.0‐WPU and YCDs1.0‐WPU is markedly enhanced, and the emission peaks obviously show a hypochromatic shift. A waterborne polyurethane‐based fluorescent tunable carbon quantum dots (BCDsxYPDs1‐x‐WPU) is prepared by mixing the ratio of BCDs1.0‐WPU and YCDs1.0‐WPU with the RGB method. It is noteworthy that BCDsxYCDs1‐x‐WPU not only achieves a fluent change of fluorescence from blue to yellow but also emits strong white fluorescence (CIE coordinates: X = 0.28, Y = 0.32). The absolute value of the Zeta potential of BCDsxYCDs1‐x‐WPU is greater than 40, indicating good storage stability. Furthermore, the thermal decomposition temperature is above 225 °C, implying good thermal stability. Furthermore, BCDsxYCDs1‐x‐WPU uses water as a continuous phase and has potential applications in environmentally friendly luminescence, anti‐counterfeiting and biological probes.

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A new strategy for the preparation of polylactic acid composites with UV resistance, light conversion, and antibacterial properties

Liu,

Wang,

et al. 2024

International Journal of Biological Macromolecules

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A tunable fluorescence waterborne polyurethane-based Ln3+ (Ln=Eu,Tb) complex with antibacterial activity

Cited by 3 publications

References 43 publications

Multifunctional Janus Membrane for Diabetic Wound Healing and Intelligent Monitoring

Multifunctional Janus Membrane for Diabetic Wound Healing and Intelligent Monitoring

A waterborne polyurethane‐based fluorescent tunable carbon quantum dot

A new strategy for the preparation of polylactic acid composites with UV resistance, light conversion, and antibacterial properties

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