Preparation of Au-based hybrid nanoflowers as efficient photothermal agents for antibacterial application

Hong, Jixuan; Chen, Maohua; Xian, Jiaru; Li, Changgui; Zheng, Xiaofei; Deng, Qiuju; Yin, Xian‐Hong; Li, Mengting

doi:10.1016/j.matlet.2022.132034

Cited by 12 publications

(7 citation statements)

References 7 publications

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“…62 To retain high stability, Hong and his co-workers selected a bacterial cellulose (BC) scaffold as template to prepare uniform and stable templated PDA@Au hybrid nanoflowers. 60 The obtained templated PDA@AuNFs exhibited higher stability than nontemplated PDA@AuNFs (without BC) and showed outstanding photothermal conversion ability, by which the temperature could increase to 60 °C after 10 min of irradiation at 808 nm. In another study, Aksoy et al loaded Au NPs on black phosphorus (BP) nanosheets to significantly improve their stability and finally achieved nearly 100% sterilization effect against Enterococcus faecalis (Figure 2b).…”

Section: External Stimuli-activated On-demand Antibacterial Strategiesmentioning

confidence: 92%

“…In Table , we have listed various metal-bearing nanomaterial building blocks and their properties that enable light and/or magnet (the two most extensively exploited external stimuli) activated antibacterial actions. ,− Their shapes include nanoflowers (NFs), nanospheres/nanoparticles (NPs), nanocages (NCs), nanorods (NRs), nanodots (NDs), nanosheets (NSs), and nanoclusters (nanoparticles smaller than 2 nm). In terms of composition, they are either monometallic ( e.g.…”

Section: Metal-bearing Building Blocks With Stimuli-activable Antibac...mentioning

confidence: 99%

“…In addition to the above factors affecting the photothermal properties of nanomaterials, the stability effect on their photothermal properties is also an important concern, as they usually possess a high tendency to irreversibly aggregate, which leads to a rapid loss of their relevant photophysical properties . To retain high stability, Hong and his co-workers selected a bacterial cellulose (BC) scaffold as template to prepare uniform and stable templated PDA@Au hybrid nanoflowers . The obtained templated PDA@AuNFs exhibited higher stability than nontemplated PDA@AuNFs (without BC) and showed outstanding photothermal conversion ability, by which the temperature could increase to 60 °C after 10 min of irradiation at 808 nm.…”

Section: External Stimuli-activated On-demand Antibacterial Strategiesmentioning

confidence: 99%

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Stimuli-Activable Metal-Bearing Nanomaterials and Precise On-Demand Antibacterial Strategies

et al. 2022

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Bacterial infections remain the leading cause of death worldwide today. The emergence of antibiotic resistance has urged the development of alternative antibacterial technologies to complement or replace traditional antibiotic treatments. In this regard, metal nanomaterials have attracted great attention for their controllable antibacterial functions that are less prone to resistance. This review discusses a particular family of stimuli-activable metal-bearing nanomaterials (denoted as SAMNs) and the associated on-demand antibacterial strategies. The various SAMN-enabled antibacterial strategies stem from basic light and magnet activation, with the addition of bacterial microenvironment responsiveness and/or bacteriatargeting selectivity and therefore offer higher spatiotemporal controllability. The discussion focuses on nanomaterial design principles, antibacterial mechanisms, and antibacterial performance, as well as emerging applications that desire on-demand and selective activation (i.e., medical antibacterial treatments, surface anti-biofilm, water disinfection, and wearable antibacterial materials). The review concludes with the authors' perspectives on the challenges and future directions for developing industrial translatable next-generation antibacterial strategies.

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Section: External Stimuli-activated On-demand Antibacterial Strategiesmentioning

confidence: 92%

Section: Metal-bearing Building Blocks With Stimuli-activable Antibac...mentioning

confidence: 99%

Section: External Stimuli-activated On-demand Antibacterial Strategiesmentioning

confidence: 99%

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Stimuli-Activable Metal-Bearing Nanomaterials and Precise On-Demand Antibacterial Strategies

et al. 2022

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“…), have been found to show excellent photocatalytic antibacterial effects. Moreover, photothermal therapies by CuS, [171] Au, [172] Fe 3 O 4 @MoS 2 , [173] CNTs, [174] and graphene derivatives [175] can efficiently elevate the local temperature under photon irradiation. Yu et al constructed a supramolecular nanocomposite made of graphene nanoribbons and a cationic porphyrin displaying photodynamic and photothermal activities.…”

Section: Nano-enabled Physical Stressmentioning

confidence: 99%

Antibacterial Nanomaterials: Mechanisms, Impacts on Antimicrobial Resistance and Design Principles

et al. 2023

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Antimicrobial resistance (AMR) is one of the biggest threats to the environment and health. AMR rapidly invalidates conventional antibiotics, and antimicrobial nanomaterials have been increasingly explored as alternatives. Interestingly, several antimicrobial nanomaterials show AMR‐independent antimicrobial effects without detectable new resistance and have therefore been suggested to prevent AMR evolution. In contrast, some are found to trigger the evolution of AMR. Given these seemingly conflicting findings, a timely discussion of the two faces of antimicrobial nanomaterials is urgently needed. This review systematically compares the killing mechanisms and structure‐activity relationships of antibiotics and antimicrobial nanomaterials. We then focus on nano‐microbe interactions to elucidate the impacts of molecular initiating events on AMR evolution. Finally, we provide an outlook on future antimicrobial nanomaterials and propose design principles for the prevention of AMR evolution.

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“…These properties can not only play the role of hemostasis, antibacterial and anti-inflammatory, but also achieve wound repair and restore skin physiological function by reducing inflammation. Hong et al selected the bacterial cellulose scaffold as the template platform for polydopamine deposition, controlled the growth of mixed polydopamine and gold nanoparticles through in situ deposition and reduction technology, and controlled the template platform within 100 nm ( Figure 10C ) ( Hong et al, 2022 ). Under the irradiation of NIR, the template showed good photothermal performance, and the photothermal temperature could rise from 45°C to 55°C, with good antibacterial effect.…”

Section: Biomedical Applications Of Photothermal Nanocomposite Hydrogelsmentioning

confidence: 99%

Photothermal nanohybrid hydrogels for biomedical applications

Ding

Zhang

et al. 2022

Front. Bioeng. Biotechnol.

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In the past decades, diseases such as wound infection, cancer, bone defect and osteoarthritis have constantly threatened the public health. However, the traditional treatment has many insufficiencies, such as high cost, easy recurrence and high biological toxicity. Hydrogel is a material with three-dimensional network structure, which has a series of advantages, such as injectability, self-heal ability, easy loading and controllability of drug release, and excellent biocompatibility. Therefore, it is extensively used in drug delivery, antibacterial, anti-cancer and other fields. However, the traditional hydrogels have the single performance, and therapeutic efficacy is often rely on the drugs loaded on them to cure diseases, which cannot achieve sustainable therapeutic effect. In order to solve this problem, photothermal nano hydrogel with photothermal agent (PTA) has become an ideal material due to its excellent physical and chemical properties. Photothermal nano hydrogels used in photothermal therapy (PTT) can exploit the photothermal effect of photothermal agent to increase local temperature and control the sol-gel phase transition behavior of hydrogels, so they are widely used in drug release, photothermal sterilization, photothermal inhibition of cancer cells and enhancement of bone repair. To sum up, this paper introduces the preparation of hydrogels with photothermal nanomaterials, and discusses their applications in the fields of drug release, photothermal sterilization, photothermal cancer cell inhibition and enhanced bone repair.

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Preparation of Au-based hybrid nanoflowers as efficient photothermal agents for antibacterial application

Cited by 12 publications

References 7 publications

Stimuli-Activable Metal-Bearing Nanomaterials and Precise On-Demand Antibacterial Strategies

Stimuli-Activable Metal-Bearing Nanomaterials and Precise On-Demand Antibacterial Strategies

Antibacterial Nanomaterials: Mechanisms, Impacts on Antimicrobial Resistance and Design Principles

Photothermal nanohybrid hydrogels for biomedical applications

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