ISSN (Print): 1573-4137
ISSN (Online): 1875-6786
Volume 16, 6 Issues, 2020
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ISSN (Print): 1573-4137
ISSN (Online): 1875-6786
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Special Issue Submission
I would like to congratulate you on the great work on our paper in Current Nanoscience.
All the people in Bentham Science have been very helpful, prompt when I needed assistance and have exhibited a high level of professionalism.
It is very likely that I will consider your journal for the submission of papers in the future and I will recommend it to my colleagues.
Polymers play an important role in the development of materials for energy conversion and sensoristic applications because
of their low cost and appealing electronic, catalytic and mechanical properties. Their nanostructuring is becoming a hot topic
due to the possibility to enhance the performance of sensors and energy conversion devices where polymers are active
components [1, 2]. The aim of this special issue is to focus on current research efforts in the development of nanostructured
polymer materials for energy conversion and sensoristic applications with particular attention to novel materials or synthetic
In a critic and comprehensive review on the nanostructuring of conducting polypyrrole (PPy) , a vast collection of related
papers is provided for the consideration of the interested readers. Attention is paid to the electrochemical methods for
deposition of polypyrrole (PPy), nanostructures and potential applications by analyzing the effect of different physico-chemical
parameters, electro-oxidative conditions including template-based or template-less depositions and cathodic polymerization.
Diverse interfaces and morphologies of polymer nanodeposits are addressed and discussed. The collected and discussed
literature demonstrates that a simple combination between the intrinsic properties of polypyrrole, the advantages of the
electropolymerization process  and potentiality of nanostructuring can produce high-performance PPy electrodes for
technological devices, such as fuel cell, lithium batteries and supercapacitors. This review revealed that up to now, few papers
deal with the performance evaluation of nanostructured polypyrrole electrodes prepared via electrodeposition, and further
works are required to be published including results about real application of PPy electrodes besides the characterization. The
review is aimed to encourage future research studies on these topics in order to cover the still present literature lacking in the
direct application of electrodeposited PPy nanostructures as electrode. More data of energy devices employing PPy
nanostructures from electrodeposition are required to build a robust database and baseline performances to compare the
prospective effectiveness of the synthesis methods and to suggest the most convenient setup.
An important theme is the electrochemical synthesis of conducting polymers  by using green solvents, such as deep
eutectic solvents (DESs), a new generation of ionic liquids, promoted as “green solvents” due to their negligible volatility and
inflammability, environmental benignity and wide electrochemical stability. A commonly used quaternary ammonium salt is
choline chloride and hydrogen bond donors are exemplified by ethylene glycol, urea, malonic acid or glycerol. The use of these
ionic media as solvents for electrochemical synthesis of conducting polymers could influence the polymer properties and
reduce their economic cost. Therefore, the most recent results regarding the electropolymerization of common conductive
polymers such as polypyrrole, polyaniline and poly(3,4-ethylenedioxythiophene) involving choline chloride-based ionic liquids
are presented and deeply discussed. The use of these low cost eutectic mixtures based on readily available components is
expected to contribute to the promotion of more sustainable technological processes easier to be developed at a larger scale.
Finally, a review of thirty-six articles is dedicated to molecular imprinted photonic polymeric hydrogels/films for sensing
applications devoted to a variety of analytes, such as cinchonie, melanine, estradiol , amino acids, glucose, caffeine,
atropine, cholesterol, bisphenol A and cholic acid. The combination of artificial recognition material such as molecular
imprinted polymer with highly ordered photonic crystals leads to the formation of efficient colorimetric sensors working with a
visual color change. This makes them very cost effective and reduces the use of expensive analytical instruments for target
recognition. A lot of work has been done in this field, but the increase of sensitivity for specific analytes and the response time
are still challenging.
I am grateful to the staff of Current Nanoscience for the opportunity to present this Special Issue and to the authors who
contributed with their papers to the dissemination of this research theme.
Aims & Scopes of Special Issue: Currently, nanostructured anodic oxides, including anodic
aluminum oxide, anodic titanium oxide, anodic copper oxides and many others, triggers on
numerous progresses in fundamental and technological disciplines. There are many new
approaches in anodization, like pulse or sinusoidal anodization, which allow to form distributed
Braggs reflectors for optical sensing or information coding. Furthermore, recently the concept
of drug releasing platform, as intelligent therapeutic device was shown to be effective, basing
on anodic aluminum and titanium oxide. Moreover, anodization of alloys allowed to achieve via
voltage and composition of electrolyte, nanoporous mixed oxides with tunable bandgap, what
is desired in photocatalysis. Recently, also numerous achievements linked to renewable energy
harvesting have been reported. Anodic titania was found to be key material in dye sensitized
solar cells technology. Moreover, developed surface area of all the anodic oxides, makes it
useful as high wetting contact angle and hydrophobic surface.
Despite numerous applications, also fundamentals of anodization developed. Currently,
alternative hard to mild anodization allowed to form highly‐ordered anodic alumina. Moreover,
alternative multistep anodizing allowed to form not nanopores, but arrays of ordered
nanocones. Both are promising for devices employing interactions between material in
nanoscale and light.
In last few years, a significant progress in anodizing was reported. The special issue will
be devoted to the newest up‐to‐date achievements in the fundamental and applications of
nanostructured anodic oxides.
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