Anisotropically Luminescent Hydrogels Containing Magnetically‐Aligned MWCNTs‐Eu(III) Hybrids

Maggini, Laura; Liu, Mingjie; Ishida, Yasuhiro; Bonifazi, Davide

doi:10.1002/adma.201204698

Cited by 59 publications

(50 citation statements)

References 57 publications

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“…[55][56][57][58] Among these studies, well-ordered polymer/carbon nanotube (CNT) nanocomposites have attracted considerable attention due to their excellent mechanical and electronic properties. [55,59] In the hydrogel field, an anisotropic, fluorescent, thermoresponsive hydrogel material that was based on magnetically oriented Eu(III)-multiwalled CNTs (MWCNTs) was reported by Maggini et al [57] In their work, they fabricated oriented Eu(III)-MWCNT frameworks by utilizing their intrinsic anisotropic magnetic susceptibilities and then further controlled the alignment of the CNT frameworks via a magnetic field (Figure 2b). Such an oriented nanocomposite structure exhibits anisotropic emission properties in the final hybrid hydrogel material.…”

Section: Magnetic Fieldsmentioning

confidence: 99%

Bioinspired Nanocomposite Hydrogels with Highly Ordered Structures

et al. 2017

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In the human body, many soft tissues with hierarchically ordered composite structures, such as cartilage, skeletal muscle, the corneas, and blood vessels, exhibit highly anisotropic mechanical strength and functionality to adapt to complex environments. In artificial soft materials, hydrogels are analogous to these biological soft tissues due to their “soft and wet” properties, their biocompatibility, and their elastic performance. However, conventional hydrogel materials with unordered homogeneous structures inevitably lack high mechanical properties and anisotropic functional performances; thus, their further application is limited. Inspired by biological soft tissues with well‐ordered structures, researchers have increasingly investigated highly ordered nanocomposite hydrogels as functional biological engineering soft materials with unique mechanical, optical, and biological properties. These hydrogels incorporate long‐range ordered nanocomposite structures within hydrogel network matrixes. Here, the critical design criteria and the state‐of‐the‐art fabrication strategies of nanocomposite hydrogels with highly ordered structures are systemically reviewed. Then, recent progress in applications in the fields of soft actuators, tissue engineering, and sensors is highlighted. The future development and prospective application of highly ordered nanocomposite hydrogels are also discussed.

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Section: Magnetic Fieldsmentioning

confidence: 99%

Bioinspired Nanocomposite Hydrogels with Highly Ordered Structures

et al. 2017

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“…However, developing programmable macroscale superstructure in hydrogels is a non-trivial aim because the bottom-up approach of self-assembly no longer works. Many efforts have been made to induce uniaxial polymer orientation in hydrogels, for example, by shear, electric or magnetic fields [16][17][18][19][20][21] . These methods are not straightforwardly applicable to develop complicated macroscale superstructure in the hydrogels, and alternative strategies are definitely required.…”

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confidence: 99%

Control superstructure of rigid polyelectrolytes in oppositely charged hydrogels via programmed internal stress

Takahashi

Arifuzzaman

et al. 2014

Nat Commun

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Biomacromolecules usually form complex superstructures in natural biotissues, such as different alignments of collagen fibres in articular cartilages, for multifunctionalities. Inspired by nature, there are efforts towards developing multiscale ordered structures in hydrogels (recognized as one of the best candidates of soft biotissues). However, creating complex superstructures in gels are hardly realized because of the absence of effective approaches to control the localized molecular orientation. Here we introduce a method to create various superstructures of rigid polyanions in polycationic hydrogels. The control of localized orientation of rigid molecules, which are sensitive to the internal stress field of the gel, is achieved by tuning the swelling mismatch between masked and unmasked regions of the photolithographic patterned gel. Furthermore, we develop a double network structure to toughen the hydrogels with programmed superstructures, which deform reversibly under large strain. This work presents a promising pathway to develop superstructures in hydrogels and should shed light on designing biomimetic materials with intricate molecular alignments.

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“…Exploiting the intrinsic χ anisotropy of MWCNTs, we have reported the first example of an anisotropic fluorescent, thermoresponsive, hydrogel‐containing MWCNT 30. Specifically, we have demonstrated that the control of the alignment of the CNT frameworks induced by a magnetic field (10 T) anisotropically affected the emission properties of CNTs exohedrally decorated with an anionic Eu III ‐based complex through ion‐pairing interactions established with a water‐soluble polycationic polymers (Figure 2).…”

Section: Introductionmentioning

confidence: 98%

Magnetically Active Carbon Nanotubes at Work

Stopin

Pineux

Marega

et al. 2015

Chemistry A European J

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Endohedral and exohedral assembly of magnetic nanoparticles (MNPs) and carbon nanotubes (CNTs) recently gave birth to a large body of new hybrid nanomaterials (MNPs-CNTs) featuring properties that are otherwise not in reach with only the graphitic or metallic cores themselves. These materials feature enhanced magnetically guided motions (rotation and translation), magnetic saturation and coercivity, large surface area, and thermal stability. By guiding the reader through the most significant examples in this Concept paper, we describe how researchers in the field engineered and exploited the synergistic combination of these two types of nanoparticles in a large variety of current and potential applications, such as magnetic fluid hyperthermia therapeutics and in magnetic resonance imaging to name a few.

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Anisotropically Luminescent Hydrogels Containing Magnetically‐Aligned MWCNTs‐Eu(III) Hybrids

Cited by 59 publications

References 57 publications

Bioinspired Nanocomposite Hydrogels with Highly Ordered Structures

Bioinspired Nanocomposite Hydrogels with Highly Ordered Structures

Control superstructure of rigid polyelectrolytes in oppositely charged hydrogels via programmed internal stress

Magnetically Active Carbon Nanotubes at Work

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