Self-healing and tough GO-supported hydrogels prepared<i>via</i>surface-initiated ATRP and photocatalytic modification

Fan, Dechao; Wang, Wenxiang; Hou, Chen; Bai, Liangjiu; Yang, Huawei; Wei, Daming; Chen, Hou; Zhang, Xue; Niu, Yuzhong

doi:10.1039/c8nj05186k

Cited by 18 publications

(4 citation statements)

References 70 publications

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“…[18][19][20] Gelator with temperature responsive phase transition (gel to gel) is a fascinating aspect for the material scientists but yet not studied in detail, except some scattered publications. [21][22][23][24][25][26][27][28] A systematic review by Fan et al on the temperature responsive injectable hydrogel based delivery systems that proposes a durable and effective approach for localized cancer therapy than the traditional chemotherapy is recently appeared in the literature. [29] Recently, we have reported novel ester functionalized IL as the new age gelator that undergoes temperature induced phase transition (opaque to transparent) and exhibited excellent dye absorbing and drug encapsulating properties.…”

Section: Introductionmentioning

confidence: 99%

Temperature‐Responsive Low Molecular Weight Ionic Liquid Based Gelator: An Approach to Fabricate an Anti‐Cancer Drug‐Loaded Hybrid Ionogel

et al. 2020

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Conceptualising gelators with stimuli responsiveness is advantageous to design smart materials for emerging technologies. These gelators, if are surface active and made up of active pharmaceutical ingredients, can (i) exhibit an interesting pharmaceutical profile, (ii) be useful in drug formulations and (iii) exert direct effects on cell membranes. Herein, cetylpyridinium salicylate (CetPySal) that offers higher surface activity than its precursor surfactant, cetpylpyridinium chloride (CPCl), was synthesised. CetPySal forms a temperature‐responsive ionogel at a critical gelation concentration that changes its physical appearance with temperature, i. e. opaque to transparent, owing to its structural arrangement within its supramolecular framework, that are characterized through spectrometric, calorimetric, scattering and microscopic techniques. The viscoelastic nature of the ionogels was studied through dynamic rheological measurements and the interactions that governs the phase transition were studied through FTIR spectroscopy. The hybrid pharmaceutical ionogels was successfully constructed through encapsulation of the chemotherapeutic drug imatinib mesylate within the ionogel matrix. The sustained release of the drug was investigated from this hybrid ionogel matrix. These results suggest that this new thermo‐responsive ionogel may be used to improve sustained release of drugs and open up new avenues as low‐cost gelators for biomedical applications.

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Section: Introductionmentioning

confidence: 99%

Temperature‐Responsive Low Molecular Weight Ionic Liquid Based Gelator: An Approach to Fabricate an Anti‐Cancer Drug‐Loaded Hybrid Ionogel

et al. 2020

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“…6.6 mg/mL) were in situ polymerized with PCNs@PDA-P4VP microcapsules (4.0 mg) in aqueous solution. The detailed synthesis processes and self-healing investigation can be referred to the previously reported literature . The swelling behavior of PCNs@PDA-P4VP microcapsule-type hydrogels was also referred to the previous literature .…”

Section: Methodsmentioning

confidence: 99%

“…The detailed synthesis processes and self-healing investigation can be referred to the previously reported literature. 49 The swelling behavior of PCNs@ Figure 1. SEM images of PCNs (a), PCNs@PDA (b), and PCNs@PDA-P4VP (c).…”

Section: ■ Introductionmentioning

confidence: 99%

Surface Engineering of Porous Carbon for Self-Healing Nanocomposite Hydrogels by Mussel-Inspired Chemistry and PET-ATRP

Fan

Wang

et al. 2019

ACS Appl. Mater. Interfaces

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In this work, surface-functionalized microcapsules from porous carbon nanospheres (PCNs) were successfully prepared by mussel-inspired chemistry with polydopamine (PDA) and metal-free photoinduced electron transfer–atom transfer radical polymerization (PET-ATRP). These functional microcapsules are introduced into self-healing hydrogels to enhance their mechanical strength. The PCNs synthesized by a simple soft template method are mixed with linseed oil for loading of the biomass healing agent, and the microcapsules are first prepared by coating PDA. PDA coatings were used to immobilize the ATRP initiator for initiating 4-vinylpyridine on the surface of microcapsules by PET-ATRP. Using these functional microcapsules, the self-healing efficiency was about 92.5% after 4 h at ambient temperature and the healed tensile strength can be held at 2.5 MPa with a fracture strain of 625.2%. All results indicated that the surface-functionalized microcapsules for self-healing hydrogels have remarkable biocompatibility and mechanical properties.

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“…Among these methods, graft polymerization is a very popular potential method to form a film layer (perhaps polymers) that are covalently bonded onto the substrate surface [10,11,12], this modified surface shows good mechanical and chemical stability, as well as structural controllable. Within various methods of graft polymerization, surface-initiated atom transfer radical polymerization (SI-ATRP) [13,14,15,16] has been widely applied for grafting polymers on different materials surface, especially for grafting a densely anchored polymer shell with a high degree of control on the size, structure, and unique uniformity of the polymer chains, which was owing to the high compatibility of SI-ATRP process has a wide variety of monomers, molecular weight (MW) and structure designability, mild reaction conditions, well-defined thickness, and composition [17,18,19].…”

Section: Introductionmentioning

confidence: 99%

Surface-Induced ARGET ATRP for Silicon Nanoparticles with Fluorescent Polymer Brushes

Yan

Liu

et al. 2019

Polymers

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Well-defined polymer brushes attached to nanoparticles offer an elegant opportunity for surface modification because of their excellent mechanical stability, functional versatility, high graft density as well as controllability of surface properties. This study aimed to prepare hybrid materials with good dispersion in different solvents, and to endow this material with certain fluorescence characteristics. Well-defined diblock copolymers poly (styrene)-b-poly (hydroxyethyl methyl acrylate)–co-poly (hydroxyethyl methyl acrylate- rhodamine B) grafted silica nanoparticles (SNPs-g-PS-b-PHEMA-co-PHEMA-RhB) hybrid materials were synthesized via surface-initiated activators regenerated by electron transfer atom transfer radical polymerization (SI-ARGET ATRP). The SNPs surfaces were modified by 3-aminopropyltriethoxysilane (KH-550) firstly, then the initiators 2-Bromoisobutyryl bromide (BIBB) was attached to SNPs surfaces through the esterification of acyl bromide groups and amidogen groups. The synthetic initiators (SNPs-Br) were further used for the SI-ARGET ATRP of styrene (St), hydroxyethyl methyl acrylate (HEMA) and hydroxyethyl methyl acrylate-rhodamine B (HEMA-RhB). The results indicated that the SI-ARGET ATRP initiator had been immobilized onto SNPs surfaces, the Br atom have located at the end of the main polymer chains, and the polymerization process possessed the characteristic of controlled/“living” polymerization. The SNPs-g-PS-b-PHEMA-co-PHEMA-RhB hybrid materials show good fluorescence performance and good dispersion in water and EtOH but aggregated in THF. This study demonstrates that the SI-ARGET ATRP provided a unique way to tune the polymer brushes structure on silica nanoparticles surface and further broaden the application of SI-ARGET ATRP.

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Self-healing and tough GO-supported hydrogels preparedviasurface-initiated ATRP and photocatalytic modification

Abstract: Hydrogels with the properties of self-healing, toughness, stiffness and strength have great potential for use in smart materials.

Cited by 18 publications

References 70 publications

Temperature‐Responsive Low Molecular Weight Ionic Liquid Based Gelator: An Approach to Fabricate an Anti‐Cancer Drug‐Loaded Hybrid Ionogel

Temperature‐Responsive Low Molecular Weight Ionic Liquid Based Gelator: An Approach to Fabricate an Anti‐Cancer Drug‐Loaded Hybrid Ionogel

Surface Engineering of Porous Carbon for Self-Healing Nanocomposite Hydrogels by Mussel-Inspired Chemistry and PET-ATRP

Surface-Induced ARGET ATRP for Silicon Nanoparticles with Fluorescent Polymer Brushes

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