An enhanced biosensor for glutamate based on self-assembled carbon nanotubes and dendrimer-encapsulated platinum nanobiocomposites-doped polypyrrole film

2007 ◽  
Vol 597 (1) ◽  
pp. 145-150 ◽  
Author(s):  
Longhua Tang ◽  
Yihua Zhu ◽  
Xiaoling Yang ◽  
Chunzhong Li
Keyword(s):  
Carbon Nanotubes ◽  
Polypyrrole Film ◽  
Self Assembled

Functionalization of gold-coated carbon nanotubes with self-assembled monolayers of thiolates

2011 ◽  
Vol 47 (7) ◽  
pp. 3463-3467 ◽  
Author(s):  
Michał Cegłowski ◽  
Urszula Narkiewicz ◽  
Iwona Pełech ◽  
Grzegorz Schroeder
Keyword(s):  
Carbon Nanotubes ◽  
Self Assembled Monolayers ◽  
Assembled Monolayers ◽  
Self Assembled ◽  
Coated Carbon

Application of carbon nanotubes as template for self-assembled nanowires

2009 ◽  
Vol 18 (2-3) ◽  
pp. 328-331 ◽  
Author(s):  
Wei-Syuan Lin ◽  
Wei-Jen Liou ◽  
Cheng-Han Chen ◽  
Hong-Ming Lin ◽  
Yeu-Kuang Hwu
Keyword(s):  
Carbon Nanotubes ◽  
Self Assembled

DNA Biosensors Based on Layer-by-Layer Self-Assembled Multilayer Films of Carbon Nanotubes and Gold Nanoparticles

2011 ◽  
Vol 298 ◽  
pp. 84-84 ◽  
Keyword(s):  
Carbon Nanotubes ◽  
Gold Nanoparticles ◽  
Multilayer Films ◽  
Layer By Layer ◽  
Dna Biosensors ◽  
Self Assembled ◽  
Double Publication

The paper has been withdrawn do to double publication. The original was published by SPIE Proceedings of SPIE, vol 7493, 74935A in 2009 (DOI:10.1117/12.840316)

scholarly journals Hydrophilicity and carbon chain length effects on the gas sensing properties of chemoresistive, self-assembled monolayer carbon nanotube sensors

2019 ◽  
Vol 10 ◽  
pp. 565-577 ◽  
Author(s):  
Juan Casanova-Cháfer ◽  
Carla Bittencourt ◽  
Eduard Llobet
Keyword(s):  
Carbon Nanotubes ◽  
Nitrogen Dioxide ◽  
Photoelectron Spectroscopy ◽  
Gas Sensing ◽  
Carbon Chain ◽  
Head Group ◽  
Carbon Chain Length ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Self Assembled

Here we describe the development of chemoresistive sensors employing oxygen-plasma-treated, Au-decorated multiwall carbon nanotubes (MWCNTs) functionalized with self-assembled monolayers (SAMs) of thiols. For the first time, the effects of the length of the carbon chain and its hydrophilicity on the gas sensing properties of SAMs formed on carbon nanotubes are studied, and additionally, the gas sensing mechanisms are discussed. Four thiols differing in the length of the carbon chain and in the hydrophobic or hydrophilic nature of the head functional group are studied. Transmission electron microscopy, Raman spectroscopy and X-ray photoelectron spectroscopy are used to analyze the resulting gas-sensitive hybrid films. Among the different nanomaterials tested, short-chain thiols having a hydrophilic head group, self-assembled onto Au-decorated carbon nanotubes were most responsive to nitrogen dioxide and ethanol vapors, even in the presence of ambient humidity. In particular, this nanomaterial was about eight times more sensitive to nitrogen dioxide than bare Au-decorated carbon nanotubes when operated at room temperature. This response enhancement is attributed to the interaction, via strong hydrogen bonding, of the polar molecules tested to the polar surface of hydrophilic thiols. The approach discussed here could be extended further by combining hydrophilic and hydrophobic thiol SAMs in Au-MWCNT sensor arrays as a helpful strategy for tuning sensor response and selectivity. This would make the detection of polar and nonpolar gas species employing low-power gas sensors easier, even under fluctuating ambient moisture conditions.

Sign in / Sign up

Export Citation Format

Share Document