scholarly journals Recent Trends in Mussel-Inspired Catechol-Containing Polymers (A Review)

2018 ◽  
Vol 34 (3) ◽  
pp. 1153-1197 ◽  
Author(s):  
Saad Moulay
Keyword(s):  
Michael Addition ◽  
Chemical Structure ◽  
Polymeric Materials ◽  
Schiff’S Base ◽  
Intensive Research ◽  
Recent Advances ◽  
Antifouling Coatings ◽  
Recent Trends ◽  
Adhesive Characteristic ◽  
Building Brick

Syntheses and applications of mussel-inspired polymeric materials have gained a foothold in research in recent years. Mussel-inspired chemistry coupled to Michael addition and Schiff’s base reactions was the key success for this intensive research. Unequivocally, The basic building brick of these materials is catechol-containing moiety, namely, 3,4-dihydroxyphenyl-L-alanine (L-DOPA or DOPA) and dopamine (DA). These catechol-based units within the chemical structure of the material ensure chiefly its adhesive characteristic to adherends of different natures. The newly-made catechol-bearing polymeric materials exhibit unique features, implying their importance in several uses and applications. Technology advent is being advantaged with these holdfast mussel protein-like materials. This review sheds light into the recent advances of such mussel-inspired materials for their adhesion capacity to several substrata of different natures, and for their applications mainly in antifouling coatings and nanoparticles technology.

scholarly journals Electrochemically Produced Copolymers of Pyrrole and Its Derivatives: A Plentitude of Material Properties Using “Simple” Heterocyclic Co-Monomers

Materials ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 281
Author(s):  
Tomasz Jarosz ◽  
Przemyslaw Ledwon
Keyword(s):  
Biological Activity ◽  
Material Properties ◽  
Building Block ◽  
Conjugated Polymer ◽  
Chemical Structure ◽  
Heterocyclic System ◽  
Repeat Unit ◽  
Polymeric Materials ◽  
Pyrrole Derivatives ◽  
Pyrrole Monomer

Polypyrrole is a classical, well-known conjugated polymer that is produced from a simple heterocyclic system. Numerous pyrrole derivatives exhibit biological activity, and the repeat unit is a common building block present in the chemical structure of many polymeric materials, finding wide application, primarily in optoelectronics and sensing. In this work, we focus on the variety of copolymers and their material properties that can be produced electrochemically, even though all these systems are obtained from mixtures of the “simple” pyrrole monomer and its derivatives with different conjugated and non-conjugated species.

Recent trends in nanozymes design: from materials and structures to environmental applications

2021 ◽  
Author(s):  
Camilo A S Ballesteros ◽  
Luiza Mercante ◽  
Augusto Alvarenga ◽  
Murilo Henrique Moreira Facure ◽  
Rodrigo Schneider ◽  
...  
Keyword(s):  
Environmental Applications ◽  
Chemical Characteristics ◽  
Physical Chemical ◽  
Recent Advances ◽  
Technological Advances ◽  
Recent Trends

A large variety of engineered nanostructures possessing enzyme-like activities have been proposed recently, which unique physical-chemical characteristics enable remarkable technological advances. In this review, we survey recent advances on nanozymes...

Carbon Dioxide as a Carbon Resource – Recent Trends and Perspectives

2012 ◽  
Vol 67 (10) ◽  
pp. 961-975 ◽  
Author(s):  
Markus Hölscher ◽  
Christoph Gürtler ◽  
Wilhelm Keim ◽  
Thomas E. Müller ◽  
Martina Peters ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Raw Materials ◽  
Low Cost ◽  
Polymeric Materials ◽  
Short Review ◽  
Chemical Research ◽  
Bond Forming ◽  
Bulk Chemicals ◽  
High Thermodynamic Stability ◽  
Recent Trends

With the growing perception of industrialized societies that fossil raw materials are limited resources, academic chemical research and chemical industry have started to introduce novel catalytic technologies which aim at the development of economically competitive processes relying much more strongly on the use of alternative carbon feedstocks. Great interest is given world-wide to carbon dioxide (CO2) as it is part of the global carbon cycle, nontoxic, easily available in sufficient quantities anywhere in the industrialized world, and can be managed technically with ease, and at low cost. In principle carbon dioxide can be used to generate a large variety of synthetic products ranging from bulk chemicals like methanol and formic acid, through polymeric materials, to fine chemicals like aromatic acids useful in the pharmaceutical industry. Owing to the high thermodynamic stability of CO2, the energy constraints of chemical reactions have to be carefully analyzed to select promising processes. Furthermore, the high kinetic barriers for incorporation of CO2 into C-H or C-C bond forming reactions require that any novel transformation of CO2 must inevitably be associated with a novel catalytic technology. This short review comprises a selection of the most recent academic and industrial research developments mainly with regard to innovations in CO2 chemistry in the field of homogeneous catalysis and processes.

scholarly journals How to run an experimental auction: a review of recent advances

2019 ◽  
Vol 46 (5) ◽  
pp. 862-922 ◽  
Author(s):  
Maurizio Canavari ◽  
Andreas C Drichoutis ◽  
Jayson L Lusk ◽  
Rodolfo M Nayga
Keyword(s):  
Recent Literature ◽  
Agricultural Economics ◽  
Single Session ◽  
Experimental Auction ◽  
Experimental Auctions ◽  
Recent Advances ◽  
Economics Profession ◽  
Pros And Cons ◽  
Recent Trends ◽  
Behavioural Factors

Abstract In this paper, we review recent advances in experimental auctions and provide practical advice and guidelines for researchers. We focus on issues related to randomisation to treatment and causal identification of treatment effects, design issues such as selection between different elicitation formats, multiple auction groups in a single session and house money effects. We also discuss sample size and power analysis issues in relation to recent trends in experimental research about pre-registration and pre-analysis plans. We position our discussion with respect to how the agricultural economics profession could benefit from practices adapted in the experimental economics community. We then present the pros and cons of moving auction studies from the laboratory to the field and review the recent literature on behavioural factors that have been identified as important for auction outcomes.

scholarly journals Recent advances in organocatalytic asymmetric oxa-Michael addition triggered cascade reactions

2020 ◽  
Vol 7 (20) ◽  
pp. 3266-3283
Author(s):  
Yu Wang ◽  
Da-Ming Du
Keyword(s):  
Michael Addition ◽  
Cascade Reactions ◽  
Recent Advances

In this review, we summarized recent advances in organocatalytic asymmetric oxa-Michael addition triggered cascade reactions.

scholarly journals Recent Advances in Mussel-Inspired Synthetic Polymers as Marine Antifouling Coatings

Coatings ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 653 ◽  
Author(s):  
Ioannis Manolakis ◽  
Usaid Azhar
Keyword(s):  
Amino Acid Derivative ◽  
Self Healing ◽  
Underwater Adhesion ◽  
Marine Biofouling ◽  
Recent Advances ◽  
Antifouling Coatings ◽  
The Common ◽  
Active Research ◽  
Research Domain ◽  
Marine Antifouling

Synthetic oligomers and polymers inspired by the multifunctional tethering system (byssus) of the common mussel (genus Mytilus) have emerged since the 1980s as a very active research domain within the wider bioinspired and biomimetic materials arena. The unique combination of strong underwater adhesion, robust mechanical properties and self-healing capacity has been linked to a large extent to the presence of the unusual α-amino acid derivative l-DOPA (l-3,4-dihydroxyphenylalanine) as a building block of the mussel byssus proteins. This paper provides a short overview of marine biofouling, discussing the different marine biofouling species and natural defenses against these, as well as biomimicry as a concept investigated in the marine antifouling context. A detailed discussion of the literature on the Mytilus mussel family follows, covering elements of their biology, biochemistry and the specific measures adopted by these mussels to utilise their l-DOPA-rich protein sequences (and specifically the ortho-bisphenol (catechol) moiety) in their benefit. A comprehensive account is then given of the key catechol chemistries (covalent and non-covalent/intermolecular) relevant to adhesion, cohesion and self-healing, as well as of some of the most characteristic mussel protein synthetic mimics reported over the past 30 years and the related polymer functionalisation strategies with l-DOPA/catechol. Lastly, we review some of the most recent advances in such mussel-inspired synthetic oligomers and polymers, claimed as specifically aimed or intended for use in marine antifouling coatings and/or tested against marine biofouling species.

scholarly journals Polymeric Coatings Based on Water-Soluble Trimethylammonium Copolymers for Antifouling Applications

Molecules ◽  
2020 ◽  
Vol 25 (7) ◽  
pp. 1678
Author(s):  
Artemis Tsagdi ◽  
Denisa Druvari ◽  
Dionisios Panagiotaras ◽  
Pavlos Avramidis ◽  
Vlasoula Bekiari ◽  
...  
Keyword(s):  
Polymeric Materials ◽  
Water Soluble ◽  
Random Copolymers ◽  
Polymeric Coatings ◽  
Short Time Period ◽  
Antifouling Activity ◽  
Antifouling Coatings ◽  
Time Period ◽  
Contact Killing ◽  
Short Time

Crosslinked polymeric materials based on a quaternary trimethylammonium compound were developed and evaluated as potential antifouling coatings. For this purpose, two water-soluble random copolymers, poly(4-vinylbenzyltrimethylammonium chloride-co-acrylic acid) P(VBCTMAM-co-AAx) and poly(N,N-dimethylacrylamide-co-glycidylmethacrylate) P(DMAm-co-GMAx), were synthesized via free radical polymerization. A water based approach for the synthesis of P(VBCTMAM-co-AAx) copolymer was used. Coatings of the complementary reactive copolymers in different compositions were obtained by curing at 120 °C for one day and were used to coat aquaculture nets. These nets were evaluated in respect to their release rate using Total Organic Carbon (TOC) and Total Nitrogen (TN) measurements. Finally, the antifouling efficacy of these newly-composed durable coatings was investigated for 14 days in accelerated conditions. The results showed that this novel polymeric material provides contact-killing antifouling activity for a short time period, whereas it functions efficiently in biofouling removal after high-pressure cleaning.

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