Hydrogen Bond Acidic Polymers for Surface Acoustic Wave Vapor Sensors and Arrays

Grate, Jay W.; Patrash, Samuel J.; Kaganove, Steven N.; Wise, Barry M.

doi:10.1021/ac9810011

“…Also quadrol has also been used for the explosives detection 50 and fluoropolyol and its modified compound, viz., SXPHFA and SXFA on low-frequency devices 12,51 have also been reported. The most sensitive of the new polymers exhibit SAW sensor detection limits 14 for nitrobenzene and 2,4-dinitrolune at 3ppb, and 235 ppt respectively.…”

Section: Polymer-coated Saw Sensormentioning

confidence: 95%

Landmine Detection Technologies to Trace Explosive Vapour Detection Techniques

Kapoor

¹

,

Kannan

²

2007

DSJ

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Large quantity of explosive is manufactured worldwide for use in various types of ammunition, arms, and mines, and used in armed conflicts. During manufacturing and usage of the explosive equipment, some of the explosive residues are released into the environment in the form of contaminated effluents, unburnt explosives fumes and vapours. Limited but uncontrolled continuous release of trace vapours also takes place when explosive-laden landmines are deployed in the field. One of the major technological challenges in post-war scenario worldwide is the detection of landmines using these trace vapour signatures and neutralising them safely. Different types of explosives are utilised as the main charge in antipersonnel and antitank landmines. In this paper, an effort has been made to review the techniques so far available based on explosive vapour detection especially to detect the landmines. A comprehensive compilation of relevant information on the techniques is presented, and their maturity levels, shortcomings, and difficulties faced are highlighted.

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“…28,29 This polymer was rationally designed to have strongly hydrogen-bond acidic properties that are desirable for sorbing basic vapors. A great many basic organic solvents exist that are used industrially that one might want to detect.…”

Section: Diverse Sorbent Polymersmentioning

confidence: 99%

Polymers for Chemical Sensors Using Hydrosilylation Chemistry

Grate¹,

Kaganove²,

Nelson³

2001

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SummarySorbent and functionalized polymers play a key role in a diverse set of fields, including chemical sensors, separation membranes, solid-phase extraction techniques, and chromatography. Sorbent polymers are critical to a number of sensor array or "electronic nose" systems. The responses of the sensors in the array give rise to patterns that can be used to distinguish one compound from another, provided that a sufficiently diverse set of sensing materials is present in the array. Figure S1 illustrates the concept of several sensors, each with a different sensor coating, giving rise to variable responses to an analyte that appear as a pattern in bar-graph format. Using hydrosilylation as the bond-forming reaction, we have developed a versatile and efficient approach to developing sorbent polymers with diverse interactive properties for sensor applications. Both the chemical and physical properties of these polymers are predictable and tunable by design.

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“…Accordingly, a number of synthetic materials have been prepared and investigated as sensor phases, most of which incorporate hexafluoroisopropanol moieties as the hydrogen-bond acidic group. [28][29][30][31][32][33][34][35][36][37][38][39] A study several years ago compared the hydrogen-bond acidities of several propyl-or allylsubstituted bisphenol structures using inverse gas chromatography and LSERs. 40 It was shown that fluorinated bisphenol-A structures were substantially more hydrogen-bond acidic than non-fluorinated analogs; fluorination improved sorption of basic compounds by factors of 100 or more.…”

Section: Figure 2 Four Examples Of Sorbent Polymers Prepared By Hydrmentioning

confidence: 99%

“…28,29,41 Figure 5 shows the calibration curves for SAW sensors coated with BSP3, fluoropolyol (FPOL), and polydimethylsiloxane (PDMS) when tested against dimethyl methylphosphonate, a nerve-agent simulant. FPOL is a sensor coating for nerve agents described in the past, 26,27,33,42 and PDMS serves as an example of a sorbent polymer lacking functionalities designed for sorption of basic vapors.…”

Section: Figure 3 Examples Of Monomers Used In Hydrosilylation Polymmentioning

confidence: 99%

Polymers for Chemical Sensors Using Hydrosilylation Chemistry

Grate¹,

Kaganove²,

Nelson³

2001

Self Cite

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SummarySorbent and functionalized polymers play a key role in a diverse set of fields, including chemical sensors, separation membranes, solid-phase extraction techniques, and chromatography. Sorbent polymers are critical to a number of sensor array or "electronic nose" systems. The responses of the sensors in the array give rise to patterns that can be used to distinguish one compound from another, provided that a sufficiently diverse set of sensing materials is present in the array. Figure S1 illustrates the concept of several sensors, each with a different sensor coating, giving rise to variable responses to an analyte that appear as a pattern in bar-graph format. Using hydrosilylation as the bond-forming reaction, we have developed a versatile and efficient approach to developing sorbent polymers with diverse interactive properties for sensor applications. Both the chemical and physical properties of these polymers are predictable and tunable by design.

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Hydrogen Bond Acidic Polymers for Surface Acoustic Wave Vapor Sensors and Arrays

Cited by 85 publications

References 37 publications

Landmine Detection Technologies to Trace Explosive Vapour Detection Techniques

Landmine Detection Technologies to Trace Explosive Vapour Detection Techniques

Polymers for Chemical Sensors Using Hydrosilylation Chemistry

Polymers for Chemical Sensors Using Hydrosilylation Chemistry

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