Electrografting of diazonium salt for SPR application

Fioresi, Flavia; Rouleau, Alain; Maximova, Ksenia; Vieillard, Julien; Boireau, Wilfrid; Caille, Céline; Soulignac, Cécile; Zeggari, Rabah; Clamens, Thomas; Lesouhaitier, Olivier; Mofaddel, Nadine; Derf, Franck Le

doi:10.1016/j.matpr.2018.10.428

Cited by 4 publications

(3 citation statements)

References 16 publications

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“…Although EG is widely utilized for the construction of monolayers with applications in molecular electronics, this technique is also used in many other research fields as well as in industrial applications. In this context, it is worth mentioning the development of a diazonium-based biochip for surface plasmon resonance (SPR) analysis, a well-established technique for studying affinity between biomolecules whose interaction takes place in a liquid/solid interface [336], by electrografting of a carboxybenzene diazonium salt [337]. Additionally, electrografting, followed by a post-functionalization, is being an interesting approach in the design of well-defined interfaces for electrochemical (bio) sensing, very important in fields, such as chemistry, materials science, engineering, biology or medicine [320].…”

Section: The Electrografting Techniquementioning

confidence: 99%

Nanofabrication Techniques in Large-Area Molecular Electronic Devices

2020

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The societal impact of the electronics industry is enormous—not to mention how this industry impinges on the global economy. The foreseen limits of the current technology—technical, economic, and sustainability issues—open the door to the search for successor technologies. In this context, molecular electronics has emerged as a promising candidate that, at least in the short-term, will not likely replace our silicon-based electronics, but improve its performance through a nascent hybrid technology. Such technology will take advantage of both the small dimensions of the molecules and new functionalities resulting from the quantum effects that govern the properties at the molecular scale. An optimization of interface engineering and integration of molecules to form densely integrated individually addressable arrays of molecules are two crucial aspects in the molecular electronics field. These challenges should be met to establish the bridge between organic functional materials and hard electronics required for the incorporation of such hybrid technology in the market. In this review, the most advanced methods for fabricating large-area molecular electronic devices are presented, highlighting their advantages and limitations. Special emphasis is focused on bottom-up methodologies for the fabrication of well-ordered and tightly-packed monolayers onto the bottom electrode, followed by a description of the top-contact deposition methods so far used.

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Section: The Electrografting Techniquementioning

confidence: 99%

Nanofabrication Techniques in Large-Area Molecular Electronic Devices

2020

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“…Generally, the synthesis of an aromatic diazonium salt is initiated by the diazotization of an aromatic amine with sodium nitrite and a mineral acid. Nevertheless, the diazonium salts are most generally used in situ without isolation due to their extremely dangerous nature rising from low thermal stability and chemical instability [33][34][35].…”

Section: Introductionmentioning

confidence: 99%

NEW ROUTE FOR THE SYNTHESES OF SOME NOVEL DERIVATIVES OF 3-ARYL BENZO[d] THIAZOLE-2(3H)-IMINE FROM HIGH SUBSTITUTED THIOUREAS

Miar

Pourshamsian

Shiroudi

et al. 2020

J. Chil. Chem. Soc.

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We have developed herein a new approach to the diverse synthesis of novel derivatives of 3-aryl benzo[d]thiazole-2(3H)-imines (3a−g), by a two-component reaction between diazonium salt (2) and various synthesized N-acyl-N'-aryl thioureas (1a−g), in the presence of sodium tert-butoxide as strong base. Finally, it resulted in the production of the desired products with a moderate yield. The chemical structures of these synthesized compounds were confirmed by various physico-chemical methods viz. FT-IR, 1 H-NMR, 13 C-NMR, and elemental analysis.

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“…In the common case, the chiral detection utilizes the separation technologies, used directly before the analysis by well-known analytical techniques. The choice of appropriate sorbents requires time and careful evaluation of enantiomer discrimination using the analytical standards of racemic mixtures (the choice of an optimal sorbent can take several days and the analysis with a predeveloped method requires at least 1 h for the analysis and probe-treatment). − Thus, an urgent trend in the organic chiral recognition is aimed at simplification and shortening of the analytical procedure. − On the other hand, the simple and rapid analysis of bio- and pharmacologically active compounds can be performed with utilization of surface plasmon-based techniques. − The plasmonic phenomenon, related to a strong concentration of light near the surface of noble metals, provides unique enhancement of optical analytical signals. − In this regard, especially interesting is utilization of the regular optical fiber-based surface plasmon resonance (SPR) technique. − At this point, especially attractive is the ability to perform the detection with an optical fiber probe, by the measurements in the light reflection mode. Such a design simplifies the detection procedure, which can be performed through the introduction of a sensitive fiber probe in the place of sample collection. − …”

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confidence: 99%

Single Plasmon-Active Optical Fiber Probe for Instantaneous Chiral Detection

et al. 2019

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The chiral recognition of organic compounds is of vital importance in the field of pharmacology and medicine. Unfortunately, the common analytical routes used in this field are significantly restricted by time spent and equipment demands. In this work, we propose an unprecedented alternative, aimed at enantiomer discrimination and estimation of their concentrations in an uncomplicated and instantaneous manner. The proposed approach is based on the creation of an optical fiber probe with two pronounced plasmonic bands attributed to gold and silver. The gold or silver surfaces were grafted with moieties, able to enunciating entrap chiral amines from solution, resulting in a wavelength shift corresponding to each plasmonic metal. As a model compound of chiral amine, we chose the DOPA, also taking in mind its high medical relevancy. For chiral detection, the optical fiber probe was simply immersed in an analytical solution of DOPA, and the selective shift of gold or silver plasmon bands was observed in the reflected light depending on DOPA chirality. The observed shifts depend on the concentration of DOPA enantiomers. In the case of a racemic mixture, the shifts of both plasmonic bands emerge, making possible the simultaneous determination of enantiomer concentrations and their ratio. The analytical cycle takes several minutes and requires very simple laboratory equipment.

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Electrografting of diazonium salt for SPR application

Cited by 4 publications

References 16 publications

Nanofabrication Techniques in Large-Area Molecular Electronic Devices

Nanofabrication Techniques in Large-Area Molecular Electronic Devices

NEW ROUTE FOR THE SYNTHESES OF SOME NOVEL DERIVATIVES OF 3-ARYL BENZO[d] THIAZOLE-2(3H)-IMINE FROM HIGH SUBSTITUTED THIOUREAS

Single Plasmon-Active Optical Fiber Probe for Instantaneous Chiral Detection

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