Design of Sorbent Hydrogen Bond Acidic Polycarbosilanes for Chemical Sensor Applications

2007 ◽  
pp. 71-87 ◽  
Author(s):  
Eric J. Houser ◽  
Duane L. Simonson ◽  
Jennifer L. Stepnowski ◽  
Mike R. Papantonakis ◽  
Stuart K. Ross ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Chemical Sensor ◽  
Sensor Applications

Chemoselective Polymers, Nanoparticles, and Nanotubes in Chemical Sensor and Preconcentrator Applications

2008 ◽  
Vol 1081 ◽  
Author(s):  
Duane L Simonson ◽  
R Andrew McGill ◽  
Michael R. Papantonakis ◽  
Bernadette A. Higgins ◽  
Jennifer L. Stepnowski
Keyword(s):  
Hydrogen Bond ◽  
Vapor Pressure ◽  
High Efficiency ◽  
Chemical Sensor ◽  
Nano Materials ◽  
Sensor Applications ◽  
Hydrogen Bond Interactions ◽  
Vapor Collection ◽  
High Vapor ◽  
Lower Vapor Pressure

AbstractThe functionalization of polymers and nano-materials with 1,1,1,3,3,3-hexafluoro-2-propanol (HFIP) groups provides materials suitable for a variety of preconcentrator and sensor applications. These are especially useful in high vapor pressure, hydrogen-bond basic vapor collection. These specific interactions lead to high efficiency collection of basic analytes such as DMMP (organophosphonates), DNT, and TNT (nitroaromatics). The lower vapor pressure analytes such as RDX have a larger dependence on surface interactions without specific (hydrogen bond) interactions. The use of carbosilane polymers with HFIP pendant groups offers dramatic improvements over fluoropolyol (FPOL) and siloxane polymers in sensor and precon applications. The sorbent capacity and thermal stability are both dramatically improved. In this work we will demonstrate the use of Carbon Nanotube (CNT) composites with HFIP polymers as sorbent coatings and evaluate their use as SPME coatings.

Functionalized polysiloxane thin films deposited by matrix-assisted pulsed laser evaporation for advanced chemical sensor applications

2006 ◽  
Vol 252 (13) ◽  
pp. 4871-4876 ◽  
Author(s):  
E.J. Houser ◽  
D.B. Chrisey ◽  
M. Bercu ◽  
N.D. Scarisoreanu ◽  
A. Purice ◽  
...  
Keyword(s):  
Thin Films ◽  
Chemical Sensor ◽  
Pulsed Laser ◽  
Laser Evaporation ◽  
Sensor Applications

Design of Hollow Nanofibrous Structures using Electrospinning: An Aspect of Chemical Sensor Applications

ChemNanoMat ◽  
2020 ◽  
Vol 6 (7) ◽  
pp. 1014-1027 ◽  
Author(s):  
Hee‐Jin Cho ◽  
Yoon Hwa Kim ◽  
Seyeon Park ◽  
Il‐Doo Kim
Keyword(s):  
Chemical Sensor ◽  
Sensor Applications

A New Fast-Readout Front-End for High Resistive Chemical Sensor Applications

2009 ◽  
pp. 273-278
Author(s):  
A. Depari ◽  
A. Flammini ◽  
D. Marioli ◽  
E. Sisinni ◽  
A. De Marcellis ◽  
...  
Keyword(s):  
Chemical Sensor ◽  
Sensor Applications ◽  
Front End

Ceramic Materials for Mass-Sensitive Sensors - Detection of VOCs and Monitoring Oil Degradation

2006 ◽  
Vol 45 ◽  
pp. 1799-1802 ◽  
Author(s):  
Peter A. Lieberzeit ◽  
Gerd Glanznig ◽  
Anton Leidl ◽  
Franz L. Dickert
Keyword(s):  
Chemical Sensor ◽  
Sol Gel ◽  
Ceramic Materials ◽  
Oil Degradation ◽  
Phase Measurements ◽  
Sensor Applications ◽  
Enhanced Sensitivity ◽  
Wave Oscillator ◽  
Quartz Substrates ◽  
Micro Balance

Inorganic frameworks obtained by the sol-gel route can be templated by a molecular imprinting (MIP) approach to generate functional cavities. Such MIP ceramics show highly appreaciable properties for chemical sensor applications, because they are inherently chemically and thermally robust. In combination with mass-sensitive devices (e.g. quartz crystal micro balance – QCM, surface transverse wave oscillator - STW), they yield highly selective and sensitive chemical sensors. Gas phase measurements with volatile organic compounds (VOCs) e.g. lead to sensitivities below 1 ppm. Sensitivity can be tuned by the sol-gel-precursor: when hydrolysing more bulky alkoxides, this leads to enhanced sensitivity by increasing porosity as a consequence of slower solvent evaporation. By adding products of oxidative oil degradation to the sol-gel mixture, we succeeded in generating sensors for degradation processes in these complex matrices. This allows parallelly monitoring both the chemical state of oil and changes in viscosity. Sensitivity is enhanced according to the Sauerbrey equation by going from 10 MHz QCM transducers to higher frequencies either by etching the quartz substrates and so reducing the resonator thickness or by applying STWs.

A thermally and mechanically stable eco-friendly nanocomposite for chemical sensor applications

2012 ◽  
Vol 36 (11) ◽  
pp. 2368 ◽  
Author(s):  
Sher Bahadar Khan ◽  
Kalsoom Akhtar ◽  
Mohammed M. Rahman ◽  
Abdullah M. Asiri ◽  
Jongchul Seo ◽  
...  
Keyword(s):  
Chemical Sensor ◽  
Sensor Applications

CuO Codoped ZnO Based Nanostructured Materials for Sensitive Chemical Sensor Applications

2011 ◽  
Vol 3 (4) ◽  
pp. 1346-1351 ◽  
Author(s):  
Mohammed M. Rahman ◽  
Aslam Jamal ◽  
Sher Bahadar Khan ◽  
Mohd Faisal
Keyword(s):  
Nanostructured Materials ◽  
Chemical Sensor ◽  
Sensor Applications
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