Temperature-responsive zinc oxide nanorods arrays grafted with poly(N-isopropylacrylamide) via SI-ATRP

RSC Advances ◽  
2015 ◽  
Vol 5 (76) ◽  
pp. 62024-62032 ◽  
Author(s):  
Qian Feng ◽  
Dongyan Tang ◽  
Haitao Lv ◽  
Weile Zhang ◽  
Wenbo Li
Keyword(s):  
Zinc Oxide ◽  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Zno Nanorods ◽  
Zinc Oxide Nanorods ◽  
Atom Transfer ◽  
Temperature Responsive ◽  
Oxide Nanorods

Nanocomposites based on ZnO nanorods, with photocatalysis and temperature responsibility, could be fabricated by grafting poly(N-isopropylacrylamide) PNIPAM via surface-initiated atom transfer radical polymerization (SI-ATRP).

Two-Photon Excited Ultraviolet Photoluminescence of Zinc Oxide Nanorods

2008 ◽  
Vol 8 (11) ◽  
pp. 5854-5857 ◽  
Author(s):  
Guangping Zhu ◽  
Chunxiang Xu ◽  
Jing Zhu ◽  
Changgui Lu ◽  
Yiping Cui ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Emission Band ◽  
Single Photon ◽  
Zno Nanorods ◽  
Zinc Oxide Nanorods ◽  
Excitation Wavelength ◽  
Photoluminescence Intensity ◽  
Vapor Phase Transport ◽  
Two Photon ◽  
Oxide Nanorods

High density zinc oxide nanorods with uniform size were synthesized on (100) silicon substrate by vapor-phase transport method. The scanning electron microscopy images reveal that the nanorods have an average diameter of about 400 nm. The X-ray diffraction pattern demonstrates the wurtzite crystalline structure of the ZnO nanorods growing along [0001] direction. The single-photon excited photoluminescence presents a strong ultraviolet emission band at 394 nm and a weak visible emission band at 600 nm. When the ZnO nanorods were respectively pumped by various wavelength lasers from 520 nm to 700 nm, two-photon excited ultraviolet photoluminescence was observed. The dependence of the two-photon excited photoluminescence intensity on the excitation wavelength and power was investigated in detail.

scholarly journals Active Role of ZnO Nanorods in Thermomechanical and Barrier Performance of Poly(vinyl alcohol-co-ethylene) Formulations for Flexible Packaging

Polymers ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 922 ◽  
Author(s):  
Francesca Luzi ◽  
Alessandro Di Michele ◽  
Luigi Torre ◽  
Debora Puglia
Keyword(s):  
Zinc Oxide ◽  
Vinyl Alcohol ◽  
Zno Nanorods ◽  
Accelerated Aging ◽  
Active Role ◽  
Zinc Oxide Nanorods ◽  
Poly Vinyl Alcohol ◽  
Accelerated Aging Test ◽  
Aging Test ◽  
Oxide Nanorods

Poly(vinyl alcohol-co-ethylene) (EVOH) films containing zinc oxide nanorods (ZnO Nrods) at 0.1, 0.5, and 1 wt%, were realized by solvent casting. The effect of ZnO Nrods content on morphological, thermal, optical, mechanical, and oxygen permeability properties were analyzed. In addition, moisture content and accelerated-aging test studies were performed, with the intention to determine the influence of zinc oxide nanofillers on the functional characteristics of realized packaging systems. Tensile properties showed increased values for strength and deformation-at-break in EVOH-based formulations reinforced with 0.1 and 0.5 wt% of zinc oxide nanorods. Results from the colorimetric and transparency investigations underlined that the presence of ZnO Nrods in EVOH copolymer did not induce evident alterations. In addition, after the accelerated-aging test, the colorimetric test confirmed the possibility for these materials to be used in the packaging sector. This behavior was induced by the presence of zinc oxide nanofillers that act as a UV block that made them useful as an efficient absorber of UV radiation.

Atom-Transfer Radical Polymerization on Zinc Oxide Nanowires

2006 ◽  
Vol 18 (21) ◽  
pp. 5045-5051 ◽  
Author(s):  
Benjamin L. Rupert ◽  
Martin J. Mulvihill ◽  
John Arnold
Keyword(s):  
Zinc Oxide ◽  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Atom Transfer ◽  
Zinc Oxide Nanowires ◽  
Oxide Nanowires

Zinc Oxide Nanorods Characteristics Prepared by Sol-Gel Immersion Method Immersed at Different Times

2013 ◽  
Vol 667 ◽  
pp. 375-379 ◽  
Author(s):  
M. Awalludin ◽  
Mohamad Hafiz Mamat ◽  
Mohd Zainizan Sahdan ◽  
Z. Mohamad ◽  
Mohamad Rusop
Keyword(s):  
Electron Microscopy ◽  
Zinc Oxide ◽  
Immersion Time ◽  
Sol Gel ◽  
Zno Nanorods ◽  
Zinc Oxide Nanorods ◽  
Immersion Method ◽  
X Ray ◽  
Oxide Nanorods ◽  
Scanning Electron

This paper focus on zinc oxide (ZnO) nanorods prepared using sol-gel immersion method immersed at different time. Immersion times have been varied 1~24 hr and the characteristics of each sample have been observed. The effects of immersion time on ZnO nanorods thin films have been studied in surface morphology and structural properties using Scanning Electron Microscopy (SEM) and X-ray diffractometer (XRD), respectively.

Optical Properties of Al Doped Zinc Oxide Nanorods Thin Film Deposited by Immersion Technique

2013 ◽  
Vol 667 ◽  
pp. 388-392
Author(s):  
S.Z. Muhamed ◽  
Mohamad Hafiz Mamat ◽  
Mohamad Rusop
Keyword(s):  
Thin Film ◽  
Zinc Oxide ◽  
Electrical Properties ◽  
Surface Morphology ◽  
Immersion Time ◽  
Zno Nanorods ◽  
Zinc Oxide Nanorods ◽  
Oxide Nanorods ◽  
Immersion Technique ◽  
Doped Zno

We investigated the effect of immersion time on optical, electrical properties and surface morphology of nanostructured Aluminium (Al) doped Zinc Oxide (ZnO) thin films prepared by immersion technique. UV-Vis-NIR spectra indicate that the transmittance of the samples decrease with immersion time. Electrical properties study reveals the nanostructured Al doped ZnO thin film at 1 hr shows the lowest resistivity compared to other samples. Surface morphology results as characterized by scanning electron microscope (SEM) show that the Al doped ZnO nanorods quantity increased with immersion time.

scholarly journals Investigation of Angiogenesis and Wound Healing Potential Mechanisms of Zinc Oxide Nanorods

2021 ◽  
Vol 12 ◽  
Author(s):  
Amr Hassan ◽  
Ahmed I. Abd El Maksoud ◽  
Dalia Elebeedy ◽  
Mohammad A. Zoair ◽  
Emadeldin R. Matar
Keyword(s):  
Wound Healing ◽  
Zinc Oxide ◽  
Zno Nanorods ◽  
Chorioallantoic Membrane ◽  
Zinc Oxide Nanorods ◽  
Vegf Expression ◽  
Angiogenic Potential ◽  
Oxide Nanorods ◽  
Angiogenesis Process ◽  
Chorioallantoic Membrane Assay

The angiogenesis process is an essential issue in tissue engineering. Zinc oxide nanorods are biocompatible metals capable of generating reactive oxygen species (ROS) that respond to induced angiogenesis through various mechanisms; however, released Zn (II) ions suppress the angiogenesis process. In this study, we fabricated green ZnO nanorods using albumin eggshell as a bio-template and investigate its angiogenic potential through chorioallantoic membrane assay and excision wound healing assay. This study demonstrated that angiogenesis and wound healing processes depend on pro-angiogenic factors as VEGF expression due to ZnO nanorods' exiting. Angiogenesis induced via zinc oxide nanorods may develop sophisticated materials to apply in the wound healing field.

scholarly journals One-pot synthesis of biomimetic glutathione peroxidase with temperature responsive catalytic behaviors

RSC Advances ◽  
2019 ◽  
Vol 9 (49) ◽  
pp. 28814-28822
Author(s):  
Shufei Jiao ◽  
Ruirui Zhang ◽  
Yanzhen Yin ◽  
Shuming Zhong ◽  
Zijie Liu ◽  
...  
Keyword(s):  
Glutathione Peroxidase ◽  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Atom Transfer ◽  
One Pot ◽  
Catalytic Behavior ◽  
Temperature Responsive ◽  
One Pot Synthesis

A microgel-based biomimetic glutathione peroxidase with temperature responsive catalytic behavior is synthesized by integrating atom transfer radical polymerization (ATRP) technology into one-pot synthesis.

scholarly journals Additive Production of a Material Based on an Acrylic Polymer with a Nanoscale Layer of Zno Nanorods Deposited Using a Direct Current Magnetron Discharge: Morphology, Photoconversion Properties, and Biosafety

Materials ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 6586
Author(s):  
Dmitry E. Burmistrov ◽  
Denis V. Yanykin ◽  
Mark O. Paskhin ◽  
Egor V. Nagaev ◽  
Alexey D. Efimov ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Direct Current ◽  
Higher Plants ◽  
Zno Nanorods ◽  
Oxide Coating ◽  
Zinc Oxide Nanorods ◽  
Control Group ◽  
Magnetron Discharge ◽  
Acrylic Polymer ◽  
Oxide Nanorods

On the basis of a direct current magnetron, a technology has been developed for producing nanoscale-oriented nanorods from zinc oxide on an acrylic polymer. The technology makes it possible to achieve different filling of the surface with zinc oxide nanorods. The nanorods is partially fused into the polymer; the cross section of the nanorods is rather close to an elongated ellipse. It is shown that, with intense abrasion, no delamination of the nanorods from the acrylic polymer is observed. The zinc oxide nanorods abrades together with the acrylic polymer. Zinc oxide nanorods luminesces with the wavelength most preferable for the process of photosynthesis in higher plants. It was shown that plants grown under the obtained material grow faster and gain biomass faster than the control group. In addition, it was found that on surfaces containing zinc oxide nanorods, a more intense formation of such reactive oxygen species as hydrogen peroxide and hydroxyl radical is observed. Intensive formation of long-lived, active forms of the protein is observed on the zinc oxide coating. The formation of 8-oxoguanine in DNA in vitro on a zinc oxide coating was shown using ELISA method. It was found that the multiplication of microorganisms on the developed material is significantly hampered. At the same time, eukaryotic cells of animals grow and develop without hindrance. Thus, the material we have obtained can be used in photonics (photoconversion material for greenhouses, housings for LEDs), and it is also an affordable and non-toxic nanomaterial for creating antibacterial coatings.

Low-Temperature Cathodoluminescence Investigations of High-Quality Zinc Oxide Nanorods

2015 ◽  
Vol 21 (3) ◽  
pp. 564-569 ◽  
Author(s):  
Bartlomiej S. Witkowski ◽  
Lukasz Wachnicki ◽  
Sylwia Gieraltowska ◽  
Anna Reszka ◽  
Bogdan J. Kowalski ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Radiation Effects ◽  
Zno Nanorods ◽  
Zinc Oxide Nanorods ◽  
Nanorod Arrays ◽  
High Quality ◽  
Sem Images ◽  
Oxide Nanorods ◽  
Very High

AbstractWe present results of cathodoluminescence (CL) investigations of high-quality zinc oxide (ZnO) nanorods obtained by an extremely fast hydrothermal method on a silicon substrate. A scanning electron microscopy (SEM) system equipped with CL allows direct comparison of SEM images and CL maps, taken from exactly the same areas of samples. Investigations are performed at a temperature of 5 K. An interlink between sample microstructure and emission properties is investigated. CL confirms a very high quality of ZnO nanorods produced by our method. In addition, the presence of super radiation effects in ZnO nanorod arrays is suggested.

Sign in / Sign up

Export Citation Format

Share Document