Sensors hydrogen bond acidic

Chemoselective hydrogen-bonded acid polymers are at the heart of many electronic nose chemical point detection sensor systems. These polymers selectively adsorb chemical agents or explosives over extended periods of time (minutes, hours, days). Relatively thick polymer films and/or hyperporous structures allow rapid vapor sorption. Material properties are selected to allow vapor sorption, but not desorption, at ambient conditions. Heating allows the trapped agent to be released for analyses. 

Grate, J. W. Patrash, S. J. Kaganove, S. N. Wise, B. M., Hydrogen bond acidic polymers for surface acoustic wave vapor sensors and arrays, Anal. Chem. 1999, 71, 1033-1040. 

Design of Sorbent Hydrogen Bond Acidic Polycarbosilanes for Chemical Sensor Applications, Chapter 5... 

This work describes recent advances in the preparation of hydrogen bond acidic polycarbosilanes and their application as chemical sensor coatings. We have prepared hydrogen bond acidic polymers based on polycarbosilanes with the goal of improving upon the chemical and thermal properties of this class of functionalized polymer (3-5). Results pertaining to the preparation of selected model compounds are also described. 

Comparative chemical sensor vapor testing of the hydrogen bond acidic polycarbosilanes with polysiloxane analogues has shown a significant enhancement in sensitivity toward hydrogen bond basic vapors relative to the... 

Hartmann-Thompson, C., A. Merrington, P. I. Carver, D. L. Keeley, J. L. Rousseau, D. Hucul, K. J. Brnza, L. S. Thomas, S. E. Keinath, R. M. Nowak, D. M. Katona, and P. R. Santurri, 2008. Hyperbranched polyesters with internal and exo-presented hydrogen-bond acidic sensor gronps for surface acoustic wave sensors. JAppl Polym Sci 110 958-74. 

Hartmann-Thompson C, Hu J, Kaganove SN, Keinath SN, Keeley DL, Dvomic PR (2004) Hydrogen-bond acidic hyperbranched polymers for surface acoustic wave (SAW) sensors. Chem Mater 16 5357-5364... 

Figures 5.2 and 6.2), the complex involving hydrogen-bonded barbiturate that should serve as sensor (Figure 6.9) and 234 have been presented earlier. The Whitesides rosette 3a [ 1 ], tapes 3b [2] and 109, crinkled tape 3c [ 1 ] (Figure 1.1) formed by melamine 1 and cyanuric acid 2 also shown earlier as well as... 

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