The application of metalloporphyrins as coating material for quartz microbalance-based chemical sensors

Brunink, J.A.J.; Natale, Corrado Di; Bungaro, Francesco; Davide, Fabrizio; D’Amico, A.; Paolesse, Roberto; Boschi, T.; Faccio, Marco; Ferri, Giuseppe

doi:10.1016/0003-2670(96)00017-7

Cited by 137 publications

(75 citation statements)

References 22 publications

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“…We first prepared the sensors by the simple drop casting, where different metal complexes of 5,10,15,20-tetraphenylporphyrin (H 2 TPP) dissolved in CHCl 3 were spotted onto the QMB surface, waiting for solvent evaporation to obtain the sensing film [14]. This resulted in a rough, but continuous coverage of the surface and it allowed for deposit of enough quantity of molecules to follow the dynamics of the vapor concentration.…”

Section: Mass Transducers: Quartz Microbalancementioning

confidence: 99%

Porphyrins for olfaction mimic: The Rome Tor Vergata approach

Natale

Martinelli

Mandoj

et al. 2017

J. Porphyrins Phthalocyanines

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ABSTRACT:The impressive chemistry shown by porphyrins in natural systems is particularly attractive for exploitation in chemical sensors. In these devices the sensing mechanisms can mimic most of the porphyrin biological reactivity, such as reversible binding, activation of small molecules, redox activity, and photoactivated processes. The simultaneous presence of multiple binding mechanisms allows porphyrins to interact with a large variety of analytes. This feature reduces the selectivity, but prompts the development of sensor arrays, where the cross-selectivity of more sensors is used to classify and identify samples characterized by a complex composition. Since 1995 the Sensors Group of the University of Rome Tor Vergata has exploited these features to prepare sensor arrays based on different transducers and aimed at several applications. These kinds of devices have been reported as electronic noses (gaseous phase analytes) and electronic tongues (liquid phase analytes) to underline that their working mechanisms are tentatively similar to that of biological senses. We report here some of the results obtained.

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Section: Mass Transducers: Quartz Microbalancementioning

confidence: 99%

Porphyrins for olfaction mimic: The Rome Tor Vergata approach

Natale

Martinelli

Mandoj

et al. 2017

J. Porphyrins Phthalocyanines

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“…Owing to these properties, porphyrins and metalloporphyrins have begun to be widely used as selective agents in analytical chemistry, particularly in the area of separation techniques [2 -8]. Their unique properties have been already utilized for the design of electrochemical and optical sensors [9,10] as well as for modification of electrodes [11,12]. The expanding role of porphyrin derivatives makes their separation and determination increasingly important.…”

Section: Introductionmentioning

confidence: 99%

Application of cyclodextrins as modifiers in electrophoretic separation of metalloporphyrins

Pyrzyńska¹,

Kilian²

2006

J. Sep. Science

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Several metallocomplexes of tetrakis-carboxyphenylporphyrin (TCPP) were separated on fused-silica capillary using CZE with UV-VIS detection. Metalloporphyrins of Co(II), Cu(II), Mn(II), Ni(II), and Zn(II) were formed directly in TCPP solution with addition of Cd(II) to increase the formation reaction rate. The composition of BGE, its concentration, and pH were optimized to ensure the stability of complexes and proper resolution. In particular, the problem of signals' shape was investigated and discussed. The presence of beta-CD in borate buffer significantly improved separation efficiency and signal shapes due to formation of inclusion complexes. Under the best separation conditions (50 mM borate running buffer at pH 9 with addition of 2 mM beta-CD, 30 kV applied voltage) a separation of metal complexes with TCPP was accomplished in 16 min.

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“…The basic structure is adapted to sensor analysis as the organic compounds exhaled in breath form particularly effective ligands to metal ion cores of such structures. Acute sensitivity to particular VOC's arises from altering the outer substituents in the porphyrin ring, giving rise to wide ranging flexibility and sensitivity of exhalents (62). A typical structure of such a porphyrrin ring is shown in Fig.…”

Section: Scissionmentioning

confidence: 99%

Breath Analysis for Medical Diagnosis

Hill

Binions

2012

International Journal on Smart Sensing and Intelligent Systems

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The purpose of this review is to highlight the advances in technology and understanding in the field of breath analysis for medical diagnosis. A critical review of the methods of breath collection, treatment, and analysis is given, highlighting the problems facing the field and areas where promising advancement has been made. One particular area of interest is centered around electronic noses, ideally, portable devices which aim to mimic biological olifactory systems in analysing gases to produce odor fingerprints. Furthermore, recent work has shown it is possible to modify the basic sensor materials to both improve their performance, increase their tolerance to factors such as water vapour interferance which often leave the sensor system de-sensitized to the gaseous biomarkers, and enhance their selectivity. It will be shown how it is possible to accurately quantify concentrations of VOC's INTERNATIONAL JOURNAL ON SMART SENSING AND INTELLIGENT SYSTEMS, VOL. 5, NO. 2, JUNE 2012 401 and make disease diagnosis from analysis of the collected data which compare favorably with traditional medical diagnostic techniques.

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The application of metalloporphyrins as coating material for quartz microbalance-based chemical sensors

Cited by 137 publications

References 22 publications

Porphyrins for olfaction mimic: The Rome Tor Vergata approach

Porphyrins for olfaction mimic: The Rome Tor Vergata approach

Application of cyclodextrins as modifiers in electrophoretic separation of metalloporphyrins

Breath Analysis for Medical Diagnosis

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