Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
4.5
2.7
Journals
Applied Sciences
Special Issues
Redox- and Photoactive Functional Materials
share announcement

Redox- and Photoactive Functional Materials

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Chemical and Molecular Sciences".

Deadline for manuscript submissions: closed (31 October 2022) | Viewed by 2690

Special Issue Editors

Prof. Dr. Fausto Puntoriero

E-Mail Website
Guest Editor
Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98122 Messina, Italy
Interests: design, synthesis, redox, photochemical and photophysical properties of supramolecular systems
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Maria I. Pilo

E-Mail Website
Guest Editor
Department of Chemistry and Pharmacy, University of Sassari, I-07100 Sassari, Italy
Interests: electroanalysis; electrochemical sensors and biosensors; voltammetry; conducting polymers; substituted thiophenes; transition metal ions complexes; nitrogen ligands; polyphenolic compounds; photocatalysis; photoresponsive devices; analytical chemistry; validation of analytical methods; food chemistry and analysis
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Functional materials are usually defined as materials characterized by a specific function originated by their electric, optical or magnetic properties. As a consequence, their physical and chemical behavior can be modulated according to external stimuli, such as absorption of electromagnetic radiation, application of an electric or a magnetic field, changes in temperature or pH, and so on. An arrangement of different functional materials is often adopted to combine different roles in a unique device. In this context, a wide range of materials are included covering conducting and semiconducting materials, catalysts, thin films, photosensitive materials, nanomaterials. Hence, a number of research fields is involved in this field, such as energy, catalysis, and sensoring.

In particular, this Special Issue is aimed at covering the most recent advances on functional materials based on their peculiar redox and/or photophysical properties: researchers involved in this field are kindly invited to propose their contribute to this subject.

Potential topics include, but are not limited to:

  • Photovoltaic devices
  • Environmental sensors
  • Bio-Sensors
  • Catalysis
  • Energy/electron transfer
  • Fuel cells
  • Batteries
  • Conducting materials
  • Hybrid materials
  • Supramolecular materials
  • Artificial Photosynthesis
  • Solar energy conversion

Prof. Dr. Fausto Puntoriero
Prof. Dr. Maria I. Pilo
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • electrochemistry
  • photochemistry
  • photophysics
  • synthesis
  • photophysical properties
  • solar fuels
  • solar light conversion
  • sensors
  • organic compounds/materials
  • metal complexes
  • organometallic complexes
  • hybrid materials
  • conductive materials
  • supramolecular materials
  • nanomaterials
  • stimuli-responsive materials
  • environment
  • energy transfer
  • electron transfer
  • medicinal chemistry
  • photo-responsive devices
  • catalysis

Published Papers (2 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

13 pages, 2113 KiB  
Article
Voltammetric and Spectroscopic Investigation of Electrogenerated Oligo-Thiophenes: Effect of Substituents on the Energy-Gap Value
by Maria I. Pilo, Elisabetta Masolo, Luca Maidich, Paola Manca, Gavino Sanna, Nadia Spano and Antonio Zucca
Appl. Sci. 2022, 12(22), 11714; https://doi.org/10.3390/app122211714 - 18 Nov 2022
Cited by 1 | Viewed by 1049
Abstract
Oligothiophenes are especially appealing due to their promising applications in different fields, including photosensitive devices. In this context, anchoring a selected substituent on the main structure of the starting material can induce changes in redox and spectroscopic features, according to the nature of [...] Read more.
Oligothiophenes are especially appealing due to their promising applications in different fields, including photosensitive devices. In this context, anchoring a selected substituent on the main structure of the starting material can induce changes in redox and spectroscopic features, according to the nature of the substituent and its position on central or terminal rings. Here, an electrochemical and spectroscopic comparison between 2,2′:5′,2″-terthiophene (2), 5-Br-terthiophene (3) and 5-ethynyl-terthiophene (5-ET) is reported, aimed at elucidating the effect of the nature of the substituent on the energy gap value of the terthiophene skeleton. Furthermore, in order to understand the influence of a selected substituent in varying its position on the terthiophene backbone, 5-ET is compared to the previously described 3′-ethynyl-terthiophene (3′-ET). Experimental results are confirmed by DFT calculations, showing a higher extension of the electron density in 5-ET compared to 2 and 3, as well as to 3′-ET. In addition, as a consequence of the presence of the unsaturated fragment on the C-5-position, the energy gap value of poly-5-ET (the electrogenerated film from 5-ET) appears significantly lower than poly-2 and poly-3. Finally, the higher conjugation effect of a terminal acetylene fragment compared to a central one is confirmed by the energy gap values of poly-5-ET and poly-3′-ET. Full article
(This article belongs to the Special Issue Redox- and Photoactive Functional Materials)
►▼ Show Figures

Figure 1

12 pages, 2352 KiB  
Article
Evaluation of Pt Deposition onto Dye-Sensitized NiO Photocathodes for Light-Driven Hydrogen Production
by Federico Droghetti, Elisabetta Benazzi, Rita Boaretto and Mirco Natali
Appl. Sci. 2022, 12(10), 4955; https://doi.org/10.3390/app12104955 - 13 May 2022
Viewed by 1242
Abstract
The design of photocathodes for the hydrogen evolution reaction (HER), which suitably couple dye-sensitized p-type semiconductors and a hydrogen evolving catalyst (HEC), currently represents an important target in the quest for artificial photosynthesis. In the present manuscript, we report on a systematic evaluation [...] Read more.
The design of photocathodes for the hydrogen evolution reaction (HER), which suitably couple dye-sensitized p-type semiconductors and a hydrogen evolving catalyst (HEC), currently represents an important target in the quest for artificial photosynthesis. In the present manuscript, we report on a systematic evaluation of simple methods for the deposition of Pt metal onto dye-sensitized NiO electrodes. The standard P1 dye was taken as the chromophore of choice and two different NiO substrates were considered. Both potentiostatic and potentiodynamic procedures were evaluated either with or without the inclusion of an additional light bias. Photoelectrochemical characterization of the resulting electrodes in an aqueous solution at pH 4 showed that all the methods tested are effective to attain photocathodes for hydrogen production. The best performances (maximum photocurrent densities of −40 µA·cm−2, IPCE of 0.18%, and ~60% Faradaic yield) were achieved using appreciably fast, light-assisted deposition routes, which are associated with the growth of small Pt islands homogenously distributed on the sensitized NiO. Full article
(This article belongs to the Special Issue Redox- and Photoactive Functional Materials)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-2
Back to TopTop