Biofunctionalization of PAMAM-montmorillonite decorated poly (Ɛ-caprolactone)-chitosan electrospun nanofibers for cell adhesion and electrochemical cytosensing

Kirbay, Fatma Ozturk; Yalçınkaya, Esra Evrim; Atik, Gozde; Evren, Gizem; Ünal, Betül Aydoğan; Demirkol, Dilek Odaci; Timur, Suna

doi:10.1016/j.bios.2018.03.017

Cited by 32 publications

(22 citation statements)

References 31 publications

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“…Compared with N-CNFs, the peak of PAMAM@N-CNFs is attributed to amide groups (−NH x −CO−, 402.3 eV) which is obtained by amidation reaction. 30,31 The above results are consistent with FTIR analysis, suggesting that the surface of N-CNFs is modified by PAMAM. Moreover, these functional groups on the PAMAM@N-CNFs provide many active sites for suppressing the shuttle effect of polysulfides in Li−S batteries.…”

Section: ■ Results and Discussionsupporting

confidence: 85%

Functionalization of Nitrogen-Doped Carbon Nanofibers with Polyamidoamine Dendrimer as a Freestanding Electrode with High Sulfur Loading for Lithium–Polysulfides Batteries

Yao

Zhang

et al. 2020

ACS Sustainable Chem. Eng.

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Lithium sulfur (Li–S) batteries have been considered as promising energy storage devices because of their superiority in energy density. However, the sulfur loading, low active material utilization, and poor cycling stability limit their commercial applications. Herein, we prepared a three-dimensional structure of polyamidoamine dendrimer (PAMAM)-functionalized nitrogen-doped carbon nanofibers (PAMAM@N-CNFs) by combined electrospun and solution coating techniques. The fabrication of freestanding PAMAM@N-CNF membranes was carried out using a Li2S6 catholyte for lithium–polysulfides batteries. The PAMAM@N-CNFs shows the strong physicochemical adsorption of polysulfides and effectively reduced the electrochemical polarization. The Li2S6 catholyte-impregnated PAMAM@N-CNF electrode (sulfur loading: 4.74 mg) shows a high first discharge capacity of 998 mA h g–1 at 0.2 C and stabilizes at 783 mA h g–1 after 300 cycles, exhibiting a superior cycling performance than the N-CNFs/Li2S6 electrode. In addition, an excellent initial capacity of 5.77 mA h (capacity retention of 71.2% over 400 cycles at 0.2 C) is achieved under a high sulfur loading of 7.11 mg. The N-CNFs modified by PAMAM with functional groups is promising for assembling with a high sulfur loading electrode, which exhibits a superior electrochemical performance in Li–S batteries.

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Section: ■ Results and Discussionsupporting

confidence: 85%

Functionalization of Nitrogen-Doped Carbon Nanofibers with Polyamidoamine Dendrimer as a Freestanding Electrode with High Sulfur Loading for Lithium–Polysulfides Batteries

Yao

Zhang

et al. 2020

ACS Sustainable Chem. Eng.

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“…(1) Biocompatible materials, which allow cell can alive on and is safe to implant in the body or put on the skin, are necessary, such as gelatin, PCL, chitosan, Polylactic Acid (PLA) and so on [91][92][93];…”

Section: Cell Adhesionmentioning

confidence: 99%

The Development and Bio-applications of Multifluid Electrospinning

Wang¹,

Yu²,

Li³

et al. 2020

MAHIG

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Electrospinning is a potent "top-down" nanofabrication method and has been explored by many researchers in recent decades because it is an efficient, versatile, simple, and low-cost route to prepare nanofibers. Nanofiber membranes generated by electrospinning have been used in various fields including tissue engineering, wound dressing, biosensing, theranostics, and functional textiles. Here we summarize the development of multifluid electrospinning processes, including coaxial, Janus and triaxial electrospinning, and the applications of these techniques. Complex nanostructures prepared by multifluid electrospinning are considered. The key parameters that affect the electrospinning process are introduced, and a discussion of both equipment and solution parameters is presented.

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“…Most mammalian cells are inclined to attach to neighboring cells or extracellular matrix (ECM) via the interactions among ligand molecules (e.g., collagens, laminin, and fibronectin), transmembrane glycoproteins (e.g., integrins), and cytoskeleton proteins (e.g., actin) to perform signal transduction and normal functions. − The cell adhesion is essential in ubiquitous physiological and pathological processes, including wound healing, tissue development and regeneration, embryogenesis, and cancer metastasis. − In addition, cell adhesion also plays key roles in the fabrication of cell-seeded scaffolds or cell microarrays for many biological and medical applications in tissue engineering, − regenerative medicine, − drug screening, − and biosensors. − For example, antifouling poly(oligoethylene glycol methacrylate) brushes were grafted from the substrate of silicon wafer via atom transfer radical polymerization (ATRP), and photopatterned with cell adhesive peptides via thiol–ene coupling . After seeding cells on the patterned surfaces, the resultant cell microarrays enabled the study of molecular pathways and integrin binding mechanisms for the regulation of cell phenotypes.…”

Section: Introductionmentioning

confidence: 99%

Tunable Adhesion of Different Cell Types Modulated by Thermoresponsive Polymer Brush Thickness

Lian

Duan

et al. 2019

Biomacromolecules

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Tunable adhesion of different cell types on well-defined surfaces has attracted common interests in the field of biomaterial science and surface engineering. Herein, we demonstrate a new strategy for the regulation of cell adhesion by simply controlling the thickness of thermoresponsive poly(N-isopropylacrylamide) (PNIPAAm) brushes via surface-initiated atom transfer radical polymerization (ATRP). The adhesion of different cell types (4T1, HEK293, H9C2, HUVEC, and L929) can be easily modulated by varying the thickness of PNIPAAm brushes from 5.9 ± 1.0 nm (PN 1 ) to 69.0 ± 5.0 nm (PN 6 ). The fluorescent staining of different cell types on a variety of surfaces reveals that the thickness of PNIPAAm brushes would regulate the assembly of F-actin and the expression of vinculin and fibronectin, which are essential in regulating the adherent status of cells. Moreover, the cellular morphologies revealed that the adherent cells are well-spread, and multiple pseudopod extensions and protrusions can be observed at the margin of cells. This work provides a facile strategy for regulating tunable adhesion of different cell types, which may find applications in tissue engineering and regenerative medicine.

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Biofunctionalization of PAMAM-montmorillonite decorated poly (Ɛ-caprolactone)-chitosan electrospun nanofibers for cell adhesion and electrochemical cytosensing

Cited by 32 publications

References 31 publications

Functionalization of Nitrogen-Doped Carbon Nanofibers with Polyamidoamine Dendrimer as a Freestanding Electrode with High Sulfur Loading for Lithium–Polysulfides Batteries

Functionalization of Nitrogen-Doped Carbon Nanofibers with Polyamidoamine Dendrimer as a Freestanding Electrode with High Sulfur Loading for Lithium–Polysulfides Batteries

The Development and Bio-applications of Multifluid Electrospinning

Tunable Adhesion of Different Cell Types Modulated by Thermoresponsive Polymer Brush Thickness

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