Janus micromotors for motion-capture-lighting of bacteria

Zhao, Long; Xie, Songzhi; Liu, Yuan; Liu, Qingjie; Song, Xiaojie; Li, Xiaohong

doi:10.1039/c9nr05503g

Cited by 41 publications

(59 citation statements)

References 45 publications

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“…Capture of E. coli on the mannose-functionalized fiber side led to lighting up of the Janus micromotors due to aggregationinduced emission effect of the incorporated tetraphenylethene derivative ( Fig. 5a) [95]. The fluorescence color of the E. colicontaminated Janus micromotor suspensions turned from to blue to green (Fig.…”

Section: Bacteria Detectionmentioning

confidence: 99%

“…The fast and sensitive detection of bacteria is indispensable in many fields of application such as food safety, medical diagnostics, water quality, and counter terrorism [93][94][95]. Foodborne pathogens like Escherichia coli, Salmonella, Listeria monocytogenes, and Campylobacter infect millions of people worldwide every year.…”

Section: Bacteria Detectionmentioning

confidence: 99%

“…Li et al proposed a "motion-capture-lighting" strategy by motion-enhanced capture of bacteria and captured-induced fluorescence of micromotors [95]. They used Janus fiber rods (JFRs) prepared by cryocutting of aligned fibers made by sideby-side electrospinning [95]. To enable bubble propulsion of the Janus fiber rods, catalase was grafted on one side of the fibers to generate oxygen bubbles ( Fig.…”

Section: Bacteria Detectionmentioning

confidence: 99%

“…To enable bubble propulsion of the Janus fiber rods, catalase was grafted on one side of the fibers to generate oxygen bubbles ( Fig. 5a) [95]. The other side was modified with mannose for specific recognition of FimH proteins of fimbriae on bacterial surfaces ( Fig.…”

Section: Bacteria Detectionmentioning

confidence: 99%

“…The other side was modified with mannose for specific recognition of FimH proteins of fimbriae on bacterial surfaces ( Fig. 5a) [95]. Capture of E. coli on the mannose-functionalized fiber side led to lighting up of the Janus micromotors due to aggregationinduced emission effect of the incorporated tetraphenylethene derivative ( Fig.…”

Section: Bacteria Detectionmentioning

confidence: 99%

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Janus particles: from concepts to environmentally friendly materials and sustainable applications

2020

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Janus particles represent a unique group of patchy particles combining two or more different physical or chemical functionalities at their opposite sides. Especially, individual Janus particles (JPs) with both chemical and geometrical anisotropy as well as their assembled layers provide considerable advantages over the conventional monofunctional particles or surfactant molecules offering (a) a high surface-to-volume ratio; (b) high interfacial activity; (c) target controlling and manipulation of their interfacial activity by external signals such as temperature, light, pH, or ionic strength and achieving switching between stable emulsions and macro-phase separation; (d) recovery and recycling; (e) controlling the mass transport across the interface between the two phases; and finally (f) tunable several functionalities in one particle allowing their use either as carrier materials for immobilized catalytically active substances or, alternatively, their site-selective attachment to substrates keeping another functionality active for further reactions. All these advantages of JPs make them exclusive materials for application in (bio-)catalysis and (bio-)sensing. Considering "green chemistry" aspects covering biogenic materials based on either natural or fully synthetic biocompatible and biodegradable polymers for the design of JPs may solve the problem of toxicity of some existing materials and open new paths for the development of more environmentally friendly and sustainable materials in the very near future. Considering the number of contributions published each year on the topic of Janus particles in general, the number of contributions regarding their environmentally friendly and sustainable applications is by far smaller. This certainly pinpoints an important challenge and is addressed in this review article. The first part of the review focuses on the synthesis of sustainable biogenic or biocompatible Janus particles, as well as strategies for their recovery, recycling, and reusability. The second part addresses recent advances in applications of biogenic/biocompatible and non-biocompatible JPs in environmental and biotechnological fields such as sensing of hazardous pollutants, water decontamination, and hydrogen production. Finally, we provide implications for the rational design of environmentally friendly and sustainable materials based on Janus particles.

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Section: Bacteria Detectionmentioning

confidence: 99%

Section: Bacteria Detectionmentioning

confidence: 99%

Section: Bacteria Detectionmentioning

confidence: 99%

Section: Bacteria Detectionmentioning

confidence: 99%

Section: Bacteria Detectionmentioning

confidence: 99%

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Janus particles: from concepts to environmentally friendly materials and sustainable applications

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AIE‐based Systems for Imaging and Image‐guided Killing of Pathogens

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et al. 2022

Handbook of Aggregation‐Induced Emission

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Microrobots with Antimicrobial Peptide Nanoarchitectonics for the Eradication of Antibiotic‐Resistant Biofilms

Milosavljević

Kosaristanova

Dolezelikova

et al. 2022

Adv Funct Materials

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Bacterial biofilms are composed of a consortium of bacteria that communicate with each other through quorum sensing. Therefore, bacteria can form an extracellular matrix, which is a mucus composed of exopolysaccharides, peptidoglycans, and extracellular DNA, through these communication molecules. The matrix protects the community of bacteria from the adverse effects of the external environment, including antibiotics, biocides, and eradicating agents. Self‐propelled functional microrobots offer great promises in the biomedical field. The self‐propelled microrobots represent an innovative platform in microrobotic research, aiming to have an important role in the biomedical field. One of the potential applications is removal of bacterial biofilms. Herein, the specific design of multifunctional microrobots is demonstrated using antimicrobial‐designed peptides for eradication of methicillin‐resistant Staphylococcus aureus (MRSA)‐produced biofilms. The designed microrobots can perform various tasks, including autonomous navigation toward bacterial cells, mechanical entry into bacterial biofilms, and blockage of the replication of bacterial DNA by indolicidin peptides. The implemented design extends the microrobot applications not only to the removal of biological aggregates but also to the delivery and release of drugs or even target manipulation, demonstrating their great potential for use in biomedical research.

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Janus micromotors for motion-capture-lighting of bacteria

Abstract: The rapid and sensitive identification of bacteria has long been a major challenge in quality control, environmental monitoring and food safety.

Cited by 41 publications

References 45 publications

Janus particles: from concepts to environmentally friendly materials and sustainable applications

Janus particles: from concepts to environmentally friendly materials and sustainable applications

AIE‐based Systems for Imaging and Image‐guided Killing of Pathogens

Microrobots with Antimicrobial Peptide Nanoarchitectonics for the Eradication of Antibiotic‐Resistant Biofilms

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