Thermo-responsive polymer–black phosphorus nanocomposites for NIR-triggered bacterial capture and elimination

Deng, Shuo; Wang, Dongsheng; Xiong, Zhiqiang; Zhang, Siyu; Li, Dengyu; Zeng, Jin; Zhang, Xuejiao; Zhao, Qing

doi:10.1039/d1en00658d

Cited by 5 publications

(4 citation statements)

References 66 publications

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“…In a very recent report, a group has made efforts to design a rather environmentally friendly disinfection method by using a thermo-responsive poly(N–isopropyl acrylamide)–functionalized black phosphorus (named BP–PNIPAM) to capture and eliminate bacterial cells under the stimuli of near-infrared irradiation. An overview of this thermoresponsive composite, followed by its capacity for capturing E. coli (A and B) and S. aureus, is shown in Figure 28 [ 145 ]. Here, the thermo-responsive PNIPAM brushes were linked on to the surface of BP nanosheets by following in situ atom transfer radical polymerization (ATRP).…”

Section: Nanocomposites or Hybrids Of Polymers And Bp Nanosheetsmentioning

confidence: 99%

“…Scanning electron microscope images have demonstrated that the BP–PNIPAM aggregations were able to capture both Gram-negative E. coli and Gram-positive S. aureus successfully ( Figure 28 c,e). Further tests under near-infrared (NIR) irradiation have indicated that these BP–PNIPAM aggregations could eradicate both E. coli and S. aureus for the BP–PNIPAM concentrations of 100 and 200 μg mL −1 and thus could be a promising candidate for a safe application in water disinfection [ 145 ].…”

Section: Nanocomposites or Hybrids Of Polymers And Bp Nanosheetsmentioning

confidence: 99%

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Towards the Future of Polymeric Hybrids of Two-Dimensional Black Phosphorus or Phosphorene: From Energy to Biological Applications

Kumar

Chang

2023

Polymers

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With the advent of a new 2D nanomaterial, namely, black phosphorus (BP) or phosphorene, the scientific community is now dedicated to focusing on and exploring this 2D material offering elusive properties such as a higher carrier mobility, biocompatibility, thickness-dependent band gap, and optoelectronic characteristics that can be harnessed for multiple applications, e.g., nanofillers, energy storage devices, field effect transistors, in water disinfection, and in biomedical sciences. The hexagonal ring of phosphorus atoms in phosphorene is twisted slightly, unlike how it is in graphene. Its unique characteristics, such as a high carrier mobility, anisotropic nature, and biocompatibility, have attracted much attention and generated further scientific curiosity. However, despite these interesting features, the phosphorene or BP poses challenges and causes frustrations when it comes to its stability under ambient conditions and processability, and thus in order to overcome these hurdles, it must be conjugated or linked with the suitable and functional organic counter macromolecule in such a way that its properties are not compromised while providing a protection from air/water that can otherwise degrade it to oxides and acid. The resulting composites/hybrid system of phosphorene and a macromolecule, e.g., a polymer, can outperform and be exploited for the aforementioned applications. These assemblies of a polymer and phosphorene have the potential for shifting the paradigm from exhaustively used graphene to new commercialized products offering multiple applications.

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Section: Nanocomposites or Hybrids Of Polymers And Bp Nanosheetsmentioning

confidence: 99%

Section: Nanocomposites or Hybrids Of Polymers And Bp Nanosheetsmentioning

confidence: 99%

Towards the Future of Polymeric Hybrids of Two-Dimensional Black Phosphorus or Phosphorene: From Energy to Biological Applications

Kumar

Chang

2023

Polymers

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“…Molecular dynamics (MD) simulation revealed that the size and topography of phosphorene determined the penetration into the cell membrane. Furthermore, surface functionalization with PEG, poly( N -isopropylacrylamide) (PNIPAM), polyglycerol derivatives, , and TiL 4 decreased the cytotoxicity of nano-BPs. The zeta potential increased from −36.5 mV in bare BPDs to +21.1 mV after TiL 4 modification, which unexpectedly decreased the toxicity to Raw 264.7 cells .…”

Section: Cytotoxicity and Biological Responses Induced By Nano-bpsmentioning

confidence: 99%

Recent Advances in the Biological Responses to Nano-black Phosphorus: Understanding the Importance of Intrinsic Properties and Cell Types

Zhao

Donskyi

Xiong

et al. 2023

Environ. Sci. Technol.

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The production scalability and increasing demand for nanoblack phosphorus materials (nano-BPs) inevitably lead to their environmental leakage, thereby raising the risk of human exposure through inhalation, ingestion, dermal, and even intravenous pathways. Consequently, a systematic evaluation of their potential impacts on human health is necessary. This Review outlines recent progress in the understanding of various biological responses to nano-BPs. Attention is particularly given to the inconsistent toxicological findings caused by a wide variation of nano-BPs' physicochemical properties, toxicological testing methods, and cell types examined in each study. Additionally, cellular uptake and intracellular trafficking, cell death modes, immunological effects, and other biologically relevant processes are discussed in detail, providing evidence for the potential health implications of nano-BPs. Finally, we address the remaining challenges related to the health risk evaluation of nano-BPs and propose a broader range of applications for these promising nanomaterials.

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“…For examples, LBP exfoliated by NMP was used as adsorbent to remove methylene blue from aqueous solution (Wang et al, 2020), or used as humidity sensor in ambient environment (Late, 2016). LBP exfoliated by DMF exhibited perfect photothermal effect, and was used to capture bacterial cells in water for disinfection (Deng et al, 2022). The role of organic solvent molecules on stabilization of LBP used in water matrix was largely not known yet.…”

Section: Introductionmentioning

confidence: 99%

Protection mechanism of N,N-dimethylformamide on stability of few-layer black phosphorus

Lei

Zhang

Lou

et al. 2023

Front. Environ. Sci.

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Few-layer black phosphorus (LBP) has been widely investigated for its unique optical and electronic properties. As degradation of LBP in ambient conditions largely limited its practical applications, numerous stabilization methods were developed. Understanding stabilization mechanism is essential to development of new protection technologies for LBP. Herein, protection mechanism of the most wildly used exfoliation solvent N,N-dimethylformamide (DMF) on LBP was investigated. DMF was found to accelerate color fading of LBP in aerobic water solution. Nevertheless, dissolvable phosphorus generated from degradation of LBP in the presence of DMF accounted for only 52%–57% of that generated in the absence of DMF. By measuring kinetics constants and activation energies of the degradation reactions, the protection mechanism of DMF was attributed to impede hydrolysis of phosphorus oxides. This was caused by occupation of oxidation sites on LBP by DMF through electrostatic interaction. Insoluble phosphorus oxides in addition to dissolvable phosphorus were observed in DMF exfoliated LBP aqueous solution, providing further evidence for hydrolysis impeding mechanism. This finding threw mechanism light on protection effects of DMF on LBP, providing new knowledge for development of effective stabilization technologies of LBP.

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Thermo-responsive polymer–black phosphorus nanocomposites for NIR-triggered bacterial capture and elimination

Abstract: Water contamination by pathogenic bacteria is a major challenge to human health. The conventional disinfection methods produce disinfection by-products that may be carcinogenic, while the recently-developed nanotechnologies face the diffculties...

Cited by 5 publications

References 66 publications

Towards the Future of Polymeric Hybrids of Two-Dimensional Black Phosphorus or Phosphorene: From Energy to Biological Applications

Towards the Future of Polymeric Hybrids of Two-Dimensional Black Phosphorus or Phosphorene: From Energy to Biological Applications

Recent Advances in the Biological Responses to Nano-black Phosphorus: Understanding the Importance of Intrinsic Properties and Cell Types

Protection mechanism of N,N-dimethylformamide on stability of few-layer black phosphorus

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