Electrospun Fibers and Tissue Engineering

Jin, Lin; Wang, Ting; Zhu, Mei Ling; Leach, Michelle K.; Naim, Youssef; Corey, Joseph M.; Feng, Zhongyuan; Jiang, Qing

doi:10.1166/jbn.2012.1360

Cited by 89 publications

(71 citation statements)

References 103 publications

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“…[ 20 ] This electrical performance was much higher than that of the commonly used e-NFs for cellular electrical stimulation such as conductive polymer nanofi bers (≈5.5 S cm −1 ). [29][30][31] The excellent electrical conductivity was contributed by the formation of graphene shells on the surface of nanofi bers with the spatial continuous graphene sheets. In addition, in this coupled material system, no polymeric insulator obstructs the 2D confi ned pseudoballistic electronic transports among the G-NFs, which often occurred in other conductive materials doped nanofi bers.…”

Section: Doi: 101002/adma201503319mentioning

confidence: 99%

Soft Graphene Nanofibers Designed for the Acceleration of Nerve Growth and Development

et al. 2015

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Soft graphene nanofibers with recoverable electrical conductivity and excellent physicochemical stability are prepared by a controlled assembly technique. By using the soft graphene nanofibers for cellular electrical stimulation, the common inhibitory effect of long-term electrical stimulation on nerve growth and development is avoided, which usually happens with traditional 2D conductive materials.

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Section: Doi: 101002/adma201503319mentioning

confidence: 99%

Soft Graphene Nanofibers Designed for the Acceleration of Nerve Growth and Development

et al. 2015

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“…1,2 Fibers with submicron and nanoscale diameters are uniquely attractive for tissue regeneration because they resemble extracellular matrix (ECM) collagen fiber morphology. The nanofibers have the ability to mimic the ECM and are known to support cell growth and differentiation.…”

Section: Introductionmentioning

confidence: 99%

Airbrushed Composite Polymer Zr-ACP Nanofiber Scaffolds with Improved Cell Penetration for Bone Tissue Regeneration

Hoffman

Škrtić²,

Sun³

et al. 2015

Tissue Engineering Part C: Methods

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Electrospun polymer nanofibers have multiple applications in the tissue engineering field despite limited cell penetration within the scaffolds and slow synthesis rates. Airbrushing, a proposed alternative to traditional electrospinning, is a technique capable of synthesizing open structure nanofiber scaffolds at high rates. In this study, three biocompatible polymers-poly-D,L-lactic acid (P-DL-LA), polycaprolactone (PCL), and poly (methyl methacrylate) (PMMA), were airbrushed to form networks for bone tissue regeneration. All three polymers were loaded with up to 20% (w/w) zirconium-modified amorphous calcium phosphate (Zr-ACP). A simple one-step mix and straightforward material deposition yielded open structure networks with welldistributed Zr-ACP. Cell penetration within the airbrushed scaffolds was found to be more than twice the cell penetration within conventional electrospun networks. The airbrushed polymer network supported cell growth and differentiation. Cells grown on the Zr-ACP in P-DL-LA fibers exhibited improved levels of osteocalcin protein with an increase in the Zr-ACP content by day 16. This airbrushing method promises to be a viable and attractive alternative to currently used electrospinning techniques in the formation of composite 3D nanofiber scaffolds for tissue engineering applications.

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“…[9,10] Their size-and shape-dependent catalytic properties have also been examined. [11][12][13][14][15] For instance, Goodman and co-workers have reported an unusual size-dependent catalytic behavior of chemicalvapor-deposited gold clusters (1-6 nm) on single-crystalline titania surface for CO oxidation. [16] Theoretical studies by Landman and co-workers [17] have shown that the Au 8 is the smallest catalytically active size for the CO oxidation.…”

Section: Introductionmentioning

confidence: 99%

“…With recent successes in the synthesis of atomically precise ultra-small gold-cluster catalysts, there is now an opportunity to obtain new knowledge about their electronic structure-catalytic-activity relationships. [12,[22][23][24] There are a number of experimental and computational studies on the catalytic activity of atomically precise gold clusters. [2,[24][25][26][27][28] The CO oxidation was explored by Spivey and co-workers [2] for ligand-stabilized atomically precise Au 38 clusters supported on titania.…”

Section: Introductionmentioning

confidence: 99%

Ligand‐Stabilized and Atomically Precise Gold Nanocluster Catalysis: A Case Study for Correlating Fundamental Electronic Properties with Catalysis

Liu

Krishna

Losovyj

et al. 2013

Chemistry A European J

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We present results from our investigations into correlating the styrene-oxidation catalysis of atomically precise mixed-ligand biicosahedral-structure [Au25(PPh3)10(SC12H25)5Cl2](2+) (Au25-bi) and thiol-stabilized icosahedral core-shell-structure [Au25(SCH2CH2Ph)18](-) (Au25-i) clusters with their electronic and atomic structure by using a combination of synchrotron radiation-based X-ray absorption fine-structure spectroscopy (XAFS) and ultraviolet photoemission spectroscopy (UPS). Compared to bulk Au, XAFS revealed low Au-Au coordination, Au-Au bond contraction and higher d-band vacancies in both the ligand-stabilized Au clusters. The ligands were found not only to act as colloidal stabilizers, but also as d-band electron acceptor for Au atoms. Au25-bi clusters have a higher first-shell Au coordination number than Au25-i, whereas Au25-bi and Au25-i clusters have the same number of Au atoms. The UPS revealed a trend of narrower d-band width, with apparent d-band spin-orbit splitting and higher binding energy of d-band center position for Au25-bi and Au25-i. We propose that the differences in their d-band unoccupied state population are likely to be responsible for differences in their catalytic activity and selectivity. The findings reported herein help to understand the catalysis of atomically precise ligand-stabilized metal clusters by correlating their atomic or electronic properties with catalytic activity.

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Electrospun Fibers and Tissue Engineering

Cited by 89 publications

References 103 publications

Soft Graphene Nanofibers Designed for the Acceleration of Nerve Growth and Development

Soft Graphene Nanofibers Designed for the Acceleration of Nerve Growth and Development

Airbrushed Composite Polymer Zr-ACP Nanofiber Scaffolds with Improved Cell Penetration for Bone Tissue Regeneration

Ligand‐Stabilized and Atomically Precise Gold Nanocluster Catalysis: A Case Study for Correlating Fundamental Electronic Properties with Catalysis

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