Moisture-responsive supramolecular nanotubes

Ding, Wuxiao; Wu, Dong; Kameta, Naohiro; Wei, Qingshuo; Kogiso, Masaki

doi:10.1039/c8nr05748f

Cited by 7 publications

(3 citation statements)

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“…Hydrolysis of the boroxine component by humidification converted their shape from the nanotube to a sheet by the rearrangement of the molecular packing from J- to H-aggregate. We also found moisture-sensitive release of fragrance oil, eugenol from Co(II)-coordinated BANTs under high humidity conditions . The binding of six water molecules to Co(II) ion results in the destruction of the bis(lipid)–Co(II) complex that self-assembles into the BANTs.…”

Section: Chemical Properties Functions and Applicationsmentioning

confidence: 71%

“…We also found moisture-sensitive release of fragrance oil, eugenol from Co(II)-coordinated BANTs under high humidity conditions. 238 The binding of six water molecules to Co(II) ion results in the destruction of the bis(lipid)−Co(II) complex that self-assembles into the BANTs. The generated [hexaaqua Co] 2+ −lipid ion complex, thus, reassembles into a sheet morphology.…”

Section: Releasementioning

confidence: 99%

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Soft-Matter Nanotubes: A Platform for Diverse Functions and Applications

2020

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Self-assembled organic nanotubes made of single or multiple molecular components can be classified into soft-matter nanotubes (SMNTs) by contrast with hard-matter nanotubes, such as carbon and other inorganic nanotubes. To date, diverse self-assembly processes and elaborate template procedures using rationally designed organic molecules have produced suitable tubular architectures with definite dimensions, structural complexity, and hierarchy for expected functions and applications. Herein, we comprehensively discuss every functions and possible applications of a wide range of SMNTs as bulk materials or single components. This Review highlights valuable contributions mainly in the past decade. Fifteen different families of SMNTs are discussed from the viewpoints of chemical, physical, biological, and medical applications, as well as action fields (e.g., interior, wall, exterior, whole structure, and ensemble of nanotubes). Chemical applications of the SMNTs are associated with encapsulating materials and sensors. SMNTs also behave, while sometimes undergoing morphological transformation, as a catalyst, template, liquid crystal, hydro-/organogel, superhydrophobic surface, and micron size engine. Physical functions pertain to ferro-/piezoelectricity and energy migration/storage, leading to the applications to electrodes or supercapacitors, and mechanical reinforcement. Biological functions involve artificial chaperone, transmembrane transport, nanochannels, and channel reactors. Finally, medical functions range over drug delivery, nonviral gene transfer vector, and virus trap.

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Section: Chemical Properties Functions and Applicationsmentioning

confidence: 71%

Section: Releasementioning

confidence: 99%

Soft-Matter Nanotubes: A Platform for Diverse Functions and Applications

2020

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“…Temperature responsive systems usually exhibit phase-changing behaviours (i.e., transitioning from a hydrophilic state to a hydrophobic state above a critical temperature); [9] pH responsive systems can have a significant charge and hydrophilicity difference upon environmental pH changes due to their ionisable functional groups (donating/accepting protons); [10] photo responsive systems show unique responses to light signals (e.g., isomerisation, decomposition); [11] and enzyme responsive systems can respond to specific molecules in biological samples that result in decomposition or crosslinking in the system. [12] Furthermore, groups that can respond to and interact with specific molecules (e.g., CO2, [13] water, [14] and metal ions [15] ) have also been reported to cause morphology transformations in BCAs.…”

Section: Introductionmentioning

confidence: 99%

Recent Progress in Stimuli-Induced Morphology Transformations of Block Copolymer Assemblies

Zeng

Roberts

2021

Aust. J. Chem.

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Synthetic polymers are well known to self-assemble into a wide range of remarkable architectures with properties directly arising from their nanoscale morphologies. The rapid development of post-polymerisation modification reactions and techniques like polymerisation induced self-assembly (PISA) have fuelled new research into ‘smart’ polymer assemblies that can undergo well defined morphological transformations in response to external stimuli. These transformations can be used to modulate the properties of polymer assemblies in a ‘switchable’ fashion, offering great potential to generate smart materials that can dynamically adapt to changes in complex environments. This review aims to highlight key developments from the past five years in this rapidly evolving field, and we discuss innovations in polymer design, stimuli-responsivity mechanisms, transformation behaviours, and potential applications of shape-transformable polymeric nanostructures.

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Stimuli‐Responsive Transformable Supramolecular Nanotubes

Kameta

2022

The Chemical Record

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Supramolecular nanotubes produced by self‐assembly of organic molecules can have unique structural features such as a one‐dimensional morphology with no branching, distinguishable inner and outer surfaces and membrane walls, or a structure that is hollow and has a high aspect ratio. Incorporation of functional groups that respond to external chemical or physical stimuli into the constituent organic molecules of supramolecular nanotubes allows us to drastically change the structure of the nanotubes by applying such stimuli. This ability affords an array of controllable approaches for the encapsulation, storage, and release of guest compounds, which is expected to be useful in the fields of physics, chemistry, biology, and medicine. In this article, I review the supramolecular nanotubes developed by our group that exhibit morphological transformations in response to pH, chemical reaction, light, temperature, or moisture.

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Moisture-responsive supramolecular nanotubes

Abstract: Supramolecular nanotubes self-assembled from metal-coordinated peptide lipids show moisture-responsive morphological changes and release of fragrance oil under high humidity conditions.

Cited by 7 publications

References 45 publications

Soft-Matter Nanotubes: A Platform for Diverse Functions and Applications

Soft-Matter Nanotubes: A Platform for Diverse Functions and Applications

Recent Progress in Stimuli-Induced Morphology Transformations of Block Copolymer Assemblies

Stimuli‐Responsive Transformable Supramolecular Nanotubes

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