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Investigation of qu...
Investigation of quartz microbalance and ChemFET transduction of molecular recognition events in a metalloporphyrin film
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- Di Natale, Corrado (författare)
- University Roma Tor Vergata
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- Buchholt, Kristina (författare)
- Linköpings universitet,Tillämpad Fysik,Tekniska högskolan
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- Martinelli, Eugenio (författare)
- University Roma Tor Vergata
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- Paolesse, Roberto (författare)
- University Roma Tor Vergata
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- Pomarico, Giuseppe (författare)
- Linköpings universitet,Tillämpad Fysik,Tekniska högskolan
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- DAmico, Arnaldo (författare)
- University Roma Tor Vergata
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- Lundström, Ingemar (författare)
- Linköpings universitet,Tillämpad Fysik,Tekniska högskolan
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- Lloyd Spetz, Anita (författare)
- Linköpings universitet,Tillämpad Fysik,Tekniska högskolan
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(creator_code:org_t)
- Elsevier BV, 2009
- 2009
- Engelska.
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Ingår i: Sensors and actuators. B, Chemical. - : Elsevier BV. - 0925-4005. ; 135:2, s. 560-567
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
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- Progresses of synthetic chemistry methodologies have allowed the preparation of a great variety of artificial receptors that are particularly appealing for chemical sensor development. In this paper, we investigate and compare the properties of gas sensors based on two types of devices, quartz microbalances (QMBs) and field effect transistors (FETs), which give the means to exploit the molecular recognition events occurring in non-conductive sensing layers formed by a thiol-modified cobalt tetraphenylporphyrin (CoTPPSH). Since QMB is sensitive to mass and FET is sensitive to electric dipoles, the resulting sensors are expected to exhibit different sensitivities and selectivities, although both based on the same sensing layer. In particular we show that the high sensitivity of CoTPPSH-coated FETs towards CO and NO is a consequence of the significant CoTPPSH electric dipole change after the gas coordination to the metal centre.
Nyckelord
- Metalloporphyrins
- Quartz microbalance
- ChemFET
- Molecular recognition
- NATURAL SCIENCES
- NATURVETENSKAP
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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