The light modulation of the interaction of l-cysteine with porphyrins coated ZnO nanorods

Sivalingam, Yuvaraj; Pudi, Rajesh; Lvova, Larisa; Pomarico, Giuseppe; Basoli, Francesco; Catini, Alexandro; Legin, Andrey; Paolesse, Roberto; Natale, Corrado Di

doi:10.1016/j.snb.2014.11.146

Cited by 14 publications

(8 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The determination of this analyte was also reported using a hybrid material composed of ZnO nanorods coated with Cu or Mn complexes of H 2 TPPS, prepared by one-pot hydrothermal synthesis directly on the ITO slide. 266 The use of porphyrins with metals possessing different coordination properties led to a different morphology of the final material, also affecting the sensing behavior. 267 The ensemble ITO-ZnO-metalloporphyrin was used as the working electrode in a three electrodes amperometric setup, and the change of the current due to the L-cysteine oxidation was measured in the dark and under visible light illumination, scanning the potential from 0 to 1.1 V. Illumination results in a depletion of the electron density in the porphyrin layer that may favor interaction with the target analyte.…”

Section: Photoelectrochemical Sensorsmentioning

confidence: 99%

Porphyrinoids for Chemical Sensor Applications

et al. 2016

Self Cite

View full text Add to dashboard Cite

Porphyrins and related macrocycles have been intensively exploited as sensing materials in chemical sensors, since in these devices they mimic most of their biological functions, such as reversible binding, catalytic activation, and optical changes. Such a magnificent bouquet of properties allows applying porphyrin derivatives to different transducers, ranging from nanogravimetric to optical devices, also enabling the realization of multifunctional chemical sensors, in which multiple transduction mechanisms are applied to the same sensing layer. Potential applications are further expanded through sensor arrays, where cross-selective sensing layers can be applied for the analysis of complex chemical matrices. The possibility of finely tuning the macrocycle properties by synthetic modification of the different components of the porphyrin ring, such as peripheral substituents, molecular skeleton, coordinated metal, allows creating a vast library of porphyrinoid-based sensing layers. From among these, one can select optimal arrays for a particular application. This feature is particularly suitable for sensor array applications, where cross-selective receptors are required. This Review briefly describes chemical sensor principles. The main part of the Review is divided into two sections, describing the porphyrin-based devices devoted to the detection of gaseous or liquid samples, according to the corresponding transduction mechanism. Although most devices are based on porphyrin derivatives, seminal examples of the application of corroles or other porphyrin analogues are evidenced in dedicated sections.

show abstract

Section: Photoelectrochemical Sensorsmentioning

confidence: 99%

Porphyrinoids for Chemical Sensor Applications

et al. 2016

Self Cite

View full text Add to dashboard Cite

show abstract

“…This process can be greatly enhanced in porphyrin-ZnO materials. This was demonstrated with both a free-base porphyrin on ZnO nanoparticles [ 28 ] and Mn and Cu porphyrins on nanorods [ 29 ] (set-up is shown in Figure 4 E). In this last case, the exposure to visible light improves both the sensitivity and the selectivity.…”

Section: Chemical Sensor Applicationsmentioning

confidence: 89%

“… Variation of the current in a voltammetric setup as a function of the concentration of cysteine in the dark and under visible light. The voltage was kept fixed at 0.8 V. Data from reference [ 29 ]. …”

Section: Figurementioning

confidence: 99%

Porphyrin-Functionalized Zinc Oxide Nanostructures for Sensor Applications

Ekrami

Emam‐Djomeh

Yarmand

et al. 2018

Sensors

Self Cite

View full text Add to dashboard Cite

Hybrid materials made of wide band gap semiconductors and dye molecules are largely studied mainly for photovoltaic applications. However, these materials also show interesting chemical sensitivity. Zinc oxides (ZnO) and porphyrins are good examples of a metal oxide semiconductor and a dye molecule that give rise to a hybrid material with such interesting properties. ZnO has been studied for sensors, optoelectronics, electronic devices, photo-anodes for dye-sensitized solar cells, and for mechanical energy harvesting. Porphyrins, on the other side, can be synthesized in order to mimic their roles in living systems such as oxygen transport and charge transfer for catalytic processes in animals and photosynthesis in plants. This paper provides a review of the chemical sensing properties of porphyrin-capped ZnO nanostructures. The methodologies to functionalize the ZnO surface with porphyrins are illustrated with emphasis on the relationships between the material preparation and its sensing properties. The development of sensors is described through the application of the hybrid materials to different transducers.

show abstract

“…In fact, the electrical response to glucose was suppressed by decreasing the molecular density of PBA in the SAM, suggesting that the sensing ability of SAMs depends on the high-ordered structures of SAM molecules. As a unique example of electrical signal-based chemical sensing, Sivalingam et al demonstrated a light modulation system of output signals in metalloporphyrin-coated ZnO nanorod electrodes for the detection of cysteine [86]. In the proposed system, the interaction between the thiolated target (i.e., cysteine) and the metalloporphyrin derivative on the ZnO nanorod can be enhanced under visible light.…”

Section: Electrochemical/electrical Detection Of Analytes For the Achmentioning

confidence: 99%

The Power of Assemblies at Interfaces: Nanosensor Platforms Based on Synthetic Receptor Membranes

Minamiki

Ichikawa

Kurita

2020

Sensors

View full text Add to dashboard Cite

Synthetic sensing materials (artificial receptors) are some of the most attractive components of chemical/biosensors because of their long-term stability and low cost of production. However, the strategy for the practical design of these materials toward specific molecular recognition in water is not established yet. For the construction of artificial material-based chemical/biosensors, the bottom-up assembly of these materials is one of the effective methods. This is because the driving forces of molecular recognition on the receptors could be enhanced by the integration of such kinds of materials at the 'interfaces', such as the boundary portion between the liquid and solid phases. Additionally, the molecular assembly of such self-assembled monolayers (SAMs) can easily be installed in transducer devices. Thus, we believe that nanosensor platforms that consist of synthetic receptor membranes on the transducer surfaces can be applied to powerful tools for high-throughput analyses of the required targets. In this review, we briefly summarize a comprehensive overview that includes the preparation techniques for molecular assemblies, the characterization methods of the interfaces, and a few examples of receptor assembly-based chemical/biosensing platforms on each transduction mechanism.Synthetic receptors (i.e., artificial molecular recognition materials) are some of the most suitable platform materials for the development of chemical/biosensors owing to their chemical/physical stability, low cost of production, and their fine-tuning ability to select the required targets [4]. However, the preparation of artificial receptor-based sensors for practical applications is still in its initial stages, since the analyte specificity of most of the artificial materials is generally lower than that of biomaterials (i.e., antibodies and enzymes) [5]. To improve the binding affinity between the artificial receptors and the analytes, complicated synthesis procedures are required. Hence, a simpler way to improve the sensing ability of the artificial receptors should be considered to bring out the attractive features of these materials. To facilitate this, bottom-up integration of the receptors as molecular assemblies is considered as one of the most useful approaches for the construction of selective sensing fields for analytes. Moreover, the sensing features in the artificial receptor-based sensors could be finely tuned by using top-down technologies (e.g., molecular imprinting techniques [6], etc.) because the molecular recognition ability of the receptor assemblies depends on their nanostructures [7]. As aforementioned, the molecular assembly enhances the functions of a single kind of molecule ( Figure 1) [8]. In addition, the driving forces in molecular recognition (i.e., noncovalent interactions) can be amplified at the interfaces such as the boundary portion between the liquid and solid phases [9,10]. Thus, we believe that the installation of artificial receptors at the surface of the sensing portion in selective transducer...

show abstract

The light modulation of the interaction of l-cysteine with porphyrins coated ZnO nanorods

Cited by 14 publications

References 17 publications

Porphyrinoids for Chemical Sensor Applications

Porphyrinoids for Chemical Sensor Applications

Porphyrin-Functionalized Zinc Oxide Nanostructures for Sensor Applications

The Power of Assemblies at Interfaces: Nanosensor Platforms Based on Synthetic Receptor Membranes

Contact Info

Product

Resources

About