Nanocomposites of 1D MoS2 with Polymer-Functionalized Nanotubes of Carbon and Borocarbonitride, and Their HER Activity

2021 ◽  
Author(s):  
Devesh Chandra Binwal ◽  
K. Pramoda ◽  
Alla Zak ◽  
Manjodh Kaur ◽  
Pallellappa Chithaiah ◽  
...  
Keyword(s):  
Functionalized Nanotubes

scholarly journals Tungsten disulfide-based nanocomposites for photothermal therapy

2019 ◽  
Vol 10 ◽  
pp. 811-822 ◽  
Author(s):  
Tzuriel Levin ◽  
Hagit Sade ◽  
Rina Ben-Shabbat Binyamini ◽  
Maayan Pour ◽  
Iftach Nachman ◽  
...  
Keyword(s):  
Photothermal Therapy ◽  
Near Infrared ◽  
Transition Metal Dichalcogenides ◽  
Tungsten Disulfide ◽  
Ceric Ammonium Nitrate ◽  
Infrared Range ◽  
Metal Dichalcogenides ◽  
Current Article ◽  
Functionalized Nanotubes

Nanostructures of transition-metal dichalcogenides (TMDC) have raised scientific interest in the last few decades. Tungsten disulfide (WS2) nanotubes and nanoparticles are among the most extensively studied members in this group, and are used for, e.g., polymer reinforcement, lubrication and electronic devices. Their biocompatibility and low toxicity make them suitable for medical and biological applications. One potential application is photothermal therapy (PTT), a method for the targeted treatment of cancer, in which a light-responsive material is irradiated with a laser in the near-infrared range. In the current article we present WS2 nanotubes functionalized with previously reported ceric ammonium nitrate–maghemite (CAN-mag) nanoparticles, used for PTT. Functionalization of the nanotubes with CAN-mag nanoparticles resulted in a magnetic nanocomposite. When tested in vitro with two types of cancer cells, the functionalized nanotubes showed a better PTT activity compared to non-functionalized nanotubes, as well as reduced aggregation and the ability to add a second-step functionality. This ability is demonstrated here with two polymers grafted onto the nanocomposite surface, and other functionalities could be additional cancer therapy agents for achieving increased therapeutic activity.

Self-assembly of amphiphilic peptides into bio-functionalized nanotubes: a novel hydrolase model

2013 ◽  
Vol 1 (17) ◽  
pp. 2297 ◽  
Author(s):  
Zupeng Huang ◽  
Shuwen Guan ◽  
Yongguo Wang ◽  
Guannan Shi ◽  
Lina Cao ◽  
...  
Keyword(s):  
Self Assembly ◽  
Amphiphilic Peptides ◽  
Functionalized Nanotubes

scholarly journals DNA-Based Applications in Nanobiotechnology

2010 ◽  
Vol 2010 ◽  
pp. 1-15 ◽  
Author(s):  
Khalid M. Abu-Salah ◽  
Anees A. Ansari ◽  
Salman A. Alrokayan
Keyword(s):  
Gene Delivery ◽  
Physical Properties ◽  
Self Assembly ◽  
Deoxyribonucleic Acid ◽  
Genetic Material ◽  
Optical Devices ◽  
Biological Molecules ◽  
Metallic Nanowires ◽  
Functionalized Nanotubes

Biological molecules such as deoxyribonucleic acid (DNA) have shown great potential in fabrication and construction of nanostructures and devices. The very properties that make DNA so effective as genetic material also make it a very suitable molecule for programmed self-assembly. The use of DNA to assemble metals or semiconducting particles has been extended to construct metallic nanowires and functionalized nanotubes. This paper highlights some important aspects of conjugating the unique physical properties of dots or wires with the remarkable recognition capabilities of DNA which could lead to miniaturizing biological electronics and optical devices, including biosensors and probes. Attempts to use DNA-based nanocarriers for gene delivery are discussed. In addition, the ecological advantages and risks of nanotechnology including DNA-based nanobiotechnology are evaluated.

Multifunctional Multi-Scale Carbon-Fiber/Epoxy Matrix Composites Reinforced With Carbon Nanotubes

2009 ◽  
Author(s):  
Piyush R. Thakre ◽  
Dimitris C. Lagoudas
Keyword(s):  
Processing Method ◽  
Matrix Composites ◽  
Plane Shear ◽  
Multi Scale ◽  
Laminate Theory ◽  
Base Composite ◽  
Nanotube Dispersion ◽  
Carbon Fiber Epoxy ◽  
Scanning Electron ◽  
Functionalized Nanotubes

In the present work, apart from developing a processing method for multi-scale laminates, characterization efforts are focused on finding longitudinal, transverse and in-plane shear modulus using flexure and in-plane shear testing of unidirectional, [0°]10, and multidirectional, [±45°]2s, laminates. A comparison of the above mentioned macroscale properties is presented for three types of composites, i.e., composites embedded with functionalized nanotubes, un-functionalized or pristine nanotubes and base composite without nanotubes. Classical laminate theory is used to model a representative laminate system. Transverse and longitudinal properties are presented and compared with experimental observations. Transmission and scanning electron microscopy is performed to study the nanotube dispersion and the morphology of fracture surfaces at different length scales.

Inorganic Fullerenes: From Lamellar Precursors to Functionalized Nanotubes

2007 ◽  
pp. 1-4
Author(s):  
Vladimir Lavayen ◽  
Eglantina Benavente ◽  
Clivia M. Sotomayor Torres ◽  
G. Gonzáles
Keyword(s):  
Functionalized Nanotubes

Effect of low contents of functionalized nanotubes on the physicomechanical properties and structure of epoxy compositions

2013 ◽  
Vol 2013 (4) ◽  
pp. 245-250
Author(s):  
R. V. Akatenkov ◽  
V. N. Aleksashin ◽  
I. V. Anoshkin ◽  
A. N. Babin ◽  
V. A. Bogatov ◽  
...  
Keyword(s):  
Physicomechanical Properties ◽  
Functionalized Nanotubes

Nanocomposites based on functionalized nanotubes in polyaniline matrix by plasma polymerization

2006 ◽  
Vol 34 (2-4) ◽  
pp. 181-189 ◽  
Author(s):  
Claudia Nastase ◽  
F. Nastase ◽  
A. Vaseashta ◽  
Ioan Stamatin
Keyword(s):  
Plasma Polymerization ◽  
Functionalized Nanotubes

Interactions of End-functionalized Nanotubes with Lipid Vesicles: Spontaneous Insertion and Nanotube Self-Organization

2011 ◽  
Vol 7 (5) ◽  
pp. 699-715 ◽  
Author(s):  
Meenakshi Dutt ◽  
Michael J. Nayhouse ◽  
Olga Kuksenok ◽  
Steven R. Little ◽  
Anna C. Balazs
Keyword(s):  
Lipid Vesicles ◽  
Self Organization ◽  
Functionalized Nanotubes

Carbon Nanotube T Junctions: Formation and Properties

2008 ◽  
Vol 8 (1) ◽  
pp. 88-98 ◽  
Author(s):  
Po-Wen Chiu
Keyword(s):  
Carbon Nanotube ◽  
Photoelectron Spectroscopy ◽  
Three Dimensions ◽  
Photoelectron Spectra ◽  
Transistor Channel ◽  
X Ray ◽  
Si Substrates ◽  
Lift Off ◽  
Linker Molecules ◽  
Functionalized Nanotubes

The formation of carbon nanotube T junctions (CNTJs) and their transport properties are reviewed. The CNTJs were formed by coupling chemically functionalized nanotubes with linker molecules. Both end-to-side and end-to-end intermolecular junctions can be assembled by reacting chloride terminated nanotubes with aliphatic diamines. The functionalized nanotube mats were characterized by Raman spectroscopy and X-ray photoelectron spectroscopy. The incorporation of functional groups into nanotubes is indicated by the pronounced shift of tangential vibration modes in Raman spectra and of carbon 1s binding energy in X-ray photoelectron spectra. For transport measurements the functionalized nanotubes were adsorbed on Si substrates, and subsequent electrodes were painted on top of the selected T junctions by lithography and lift-off techniques. The bar of the "T" is used as the transistor channel and the stem of the "T" is used as the gate. In this configuration, the active area is confined to a few nanometers in all three dimensions.

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