Single-Stranded DNA Functionalized Single-Walled Carbon Nanotubes for Microbiosensors via Layer-by-Layer Electrostatic Self-Assembly

2014 ◽  
Vol 6 (6) ◽  
pp. 3784-3789 ◽  
Author(s):  
Zhuo Kang ◽  
Xiaoqin Yan ◽  
Yue Zhang ◽  
Jing Pan ◽  
Jin Shi ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Self Assembly ◽  
Single Walled Carbon Nanotubes ◽  
Layer By Layer ◽  
Single Stranded Dna ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

scholarly journals Absorption Properties of Hybrid Composites of Gold Nanorods and Functionalized Single-Walled Carbon Nanotubes

2012 ◽  
Vol 2012 ◽  
pp. 1-8
Author(s):  
Deok-Jin Yu ◽  
D. Ganta ◽  
Elijah Dale ◽  
A. T. Rosenberger ◽  
James P. Wicksted ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Absorption Spectra ◽  
Self Assembly ◽  
Hybrid Composites ◽  
Single Walled Carbon Nanotubes ◽  
Plasmon Mode ◽  
Absorption Properties ◽  
Au Nanorods ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

We report on the optical properties of fabricated nanohybrid structures containing Au nanorods and functionalized single-walled carbon nanotubes in aqueous solutions. In particular, the absorption spectra of these hybrid materials are studied as a function of the concentration of the functionalized single-walled carbon nanotubes as well as the evolution time following preparation. The absorption spectra show a red shift of the longitudinal plasmon mode of the Au nanorods along with the emergence of broadened structures at wavelengths between 1000 and 1100 nm. These results, supported by TEM images, indicate the self-assembly of the Au nanorods forming on the sidewalls of the functionalized SWNTs driven by polyelectrolyte interactions.

Ionic Self-Assembly Provides Dense Arrays of Individualized, Aligned Single-Walled Carbon Nanotubes

2013 ◽  
Vol 52 (49) ◽  
pp. 13080-13085 ◽  
Author(s):  
Jean-Hubert Olivier ◽  
Pravas Deria ◽  
Jaehong Park ◽  
Amar Kumbhar ◽  
Maria Andrian-Albescu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Self Assembly ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon ◽  
Dense Arrays ◽  
Walled Carbon Nanotubes

scholarly journals Gas Biosensor Arrays Based on Single-Stranded DNA-Functionalized Single-Walled Carbon Nanotubes for the Detection of Volatile Organic Compound Biomarkers Released by Huanglongbing Disease-Infected Citrus Trees

Sensors ◽  
2019 ◽  
Vol 19 (21) ◽  
pp. 4795 ◽  
Author(s):  
Hui Wang ◽  
Pankaj Ramnani ◽  
Tung Pham ◽  
Claudia Chaves Villarreal ◽  
Xuejun Yu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Uv Spectroscopy ◽  
Single Walled Carbon Nanotubes ◽  
Disease Diagnosis ◽  
Single Stranded Dna ◽  
Biosensor Arrays ◽  
Single Walled Carbon ◽  
Volatile Organic ◽  
Walled Carbon Nanotubes ◽  
Citrus Trees

Volatile organic compounds (VOCs) released by plants are closely associated with plant metabolism and can serve as biomarkers for disease diagnosis. Huanglongbing (HLB), also known as citrus greening or yellow shoot disease, is a lethal threat to the multi-billion-dollar citrus industry. Early detection of HLB is vital for removal of susceptible citrus trees and containment of the disease. Gas sensors are applied to monitor the air quality or toxic gases owing to their low-cost fabrication, smooth operation, and possible miniaturization. Here, we report on the development, characterization, and application of electrical biosensor arrays based on single-walled carbon nanotubes (SWNTs) decorated with single-stranded DNA (ssDNA) for the detection of four VOCs—ethylhexanol, linalool, tetradecene, and phenylacetaldehyde—that serve as secondary biomarkers for detection of infected citrus trees during the asymptomatic stage. SWNTs were noncovalently functionalized with ssDNA using π–π interaction between the nucleotide and sidewall of SWNTs. The resulting ssDNA-SWNT hybrid structure and device properties were investigated using Raman spectroscopy, ultraviolet (UV) spectroscopy, and electrical measurements. To monitor changes in the four VOCs, gas biosensor arrays consisting of bare SWNTs before and after being decorated with different ssDNA were employed to determine the different concentrations of the four VOCs. The data was processed using principal component analysis (PCA) and neural net fitting (NNF).

Formation of quantum dots in single stranded DNA-wrapped single-walled carbon nanotubes

2010 ◽  
Vol 96 (2) ◽  
pp. 023104 ◽  
Author(s):  
Y. F. Li ◽  
T. Kaneko ◽  
R. Hatakeyama
Keyword(s):  
Carbon Nanotubes ◽  
Quantum Dots ◽  
Single Walled Carbon Nanotubes ◽  
Single Stranded Dna ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

Top-Down Patterning and Self-Assembly for Regular Arrays of Semiconducting Single-Walled Carbon Nanotubes

2014 ◽  
Vol 26 (35) ◽  
pp. 6151-6156 ◽  
Author(s):  
Justin Wu ◽  
Alexander Antaris ◽  
Ming Gong ◽  
Hongjie Dai
Keyword(s):  
Carbon Nanotubes ◽  
Self Assembly ◽  
Single Walled Carbon Nanotubes ◽  
Top Down ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes ◽  
Regular Arrays

Noncovalent Functionalization of Single Walled Carbon Nanotubes Using Alternate Layer-By-Layer Polyelectrolyte Adsorption for Nanocomposite Fuel Cell Electrodes

2004 ◽  
Vol 837 ◽  
Author(s):  
R. B. Dhullipudi ◽  
T. A. Dobbins ◽  
S.R. Adiddela ◽  
Z. Zheng ◽  
R. A. Gunasekaran ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Fuel Cells ◽  
Proton Exchange Membrane ◽  
Single Walled Carbon Nanotubes ◽  
Pem Fuel Cells ◽  
Proton Exchange ◽  
Layer By Layer ◽  
Single Walled Carbon ◽  
Exchange Membrane ◽  
Walled Carbon Nanotubes

ABSTRACTElectrodes which are resistant to chemical poisoning by CO, S, and other fuel impurities are needed to replace Pt in proton exchange membrane (PEM) fuel cells. We have designed composite electrodes comprised of single walled carbon nanotubes (CNTs) within a conducting polymer matrix. A method for solubilizing single-walled carbon nanotubes (CNTs) in aqueous media using polyelectrolyte layer-by-layer (LbL) nanoassembly of polystyrene sulfonate (PSS) and polyallylamine (PAH) at the CNT surface is elucidated. Once soluble, the CNTs were assembled onto planar substrates using alternate LbL nanoassembly to form nanocomposite films. These films will later be tested for their potential as alternative anodes in proton exchange membrane fuel cells.

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