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Topic Review
Transition Metal Dichalcogenides in Photocatalytic Hydrogen Evolution
Transition metal dichalcogenides (TMDCs) is an emerging class of two-dimensional (2-D) materials that have exhibited great potential in photocatalytic applications owing to their intrinsic properties. They are normally used as cocatalysts together with other semiconductor materials and the junction created between them facilitates charge transfer of the photogenerated electrons and holes. The photocatalytic H2-evolution systems can be enhanced by lengthening the parts of uncovered surface of photocatalyst and delaying the recombination of electron-hole pairs.
  • 556
  • 05 May 2022
Topic Review
Natural Antiviral Polymers
Natural polymers or biopolymers are classified into polysaccharides, polypeptides (proteins), and nucleic acid polymers (polynucleotides). Natural polymers as components of living systems are derived from plants, animals, and microorganisms.
  • 853
  • 05 May 2022
Topic Review
Synthetic Polymers
Unlike natural polymers, the chemical composition, functional group type and extent of functionalization, molecular weight, charge density and distribution, degradation and stability of synthetic polymers can be engineered to maximize antiviral activity against a specific virus type.
  • 978
  • 05 May 2022
Topic Review
Application of Quantum Mechanics/Molecular Mechanics Methodologies to Metalloproteins
The multiscaling quantum mechanics/molecular mechanics (QM/MM) approach was introduced in 1976, while the extensive acceptance of this methodology started in the 1990s. The combination of QM/MM approach with molecular dynamics (MD) simulation, otherwise known as the QM/MM/MD approach, is a powerful and promising tool for the investigation of chemical reactions’ mechanism of complex molecular systems, drug delivery, properties of molecular devices, organic electronics, etc. Applications of the QM/MM methodologies on metalloproteins are presented.  
  • 1.2K
  • 05 May 2022
Topic Review
Electroreduction of CO2 toward High Current Density
Carbon dioxide (CO2) electroreduction offers an attractive pathway for converting CO2 to valuable fuels and chemicals. Despite the existence of some excellent electrocatalysts with superior selectivity for specific products, these reactions are conducted at low current densities ranging from several mA cm−2 to tens of mA cm−2, which are far from commercially desirable values. To extend the applications of CO2 electroreduction technology to an industrial scale, long-term operations under high current densities (over 200 mA cm−2) are desirable.
  • 863
  • 05 May 2022
Topic Review
Olive Biophenols Oleuropein and Hydroxytyrosol
Oleuropein (OLE) and hydroxytyrosol (HT) are olive-derived phenols recognised as health-promoting agents with antioxidant, anti-inflammatory, cardioprotective, antifungal, antimicrobial, and antitumor activities, providing a wide range of applications as functional food ingredients. HT is Generally Recognised as Safe (GRAS) by the European Food Safety Authority (EFSA) and the Food and Drug Administration (FDA), whereas OLE is included in EFSA daily consumptions recommendations, albeit there is no official GRAS status for its pure form. 
  • 1.2K
  • 05 May 2022
Topic Review
Bioactive Flavonoid Hybrids Linked by 1,2,3-Triazole
Considering the biological activities of both flavonoids and 1,2,3-triazole ring, as well as the metabolic stability associated to this heterocyclic ring, hybridization of flavonoids with a 1,2,3-triazole ring has been widely reported over the last years. The most common way to obtain these hybrids is through the copper (I) catalyzed azide-alkyne cycloaddition (CuAAC), also known as Click Chemistry reaction. It was highlighted the flavonoid hybrids linked by the1,2,3-triazole ring obtained since 2017, including chalcones, flavones, flavanones and flavonols, among others, with antitumor, antimicrobial, antidiabetic, neuroprotective, anti-inflammatory, antioxidant, and antifouling activities.
  • 617
  • 05 May 2022
Topic Review
Structure and Immobilization of Aptamers
Aptamers are synthetically produced via a process known as systematic evolution of ligands by exponential enrichment (SELEX).
  • 507
  • 29 Apr 2022
Topic Review
Free Radical
Free radicals can be defined as molecular entities or molecular fragments, capable of independent existence (hence “free”). They contain one or more unpaired electrons in an outer atomic orbital or molecular orbital (hence “radical”). The negative electrical charge of electron(s) may be counterbalanced by the positive nuclear charge of positrons, resulting in a neutral particle; otherwise, having anion or cation radicals.
  • 1.8K
  • 29 Apr 2022
Topic Review
Nanocomposite Coatings
The development of nanocomposite coatings is a rapidly growing field in the domain of nanotechnology. Nanocomposite coatings are rapidly being inducted in the sectors of aerospace, marine, automobiles, sensors, dental implants and electronics. Factors that affect the functionality of nanocomposite coatings include properties of matrices and fillers, spatial dispersion of fillers, surface morphology and deposition techniques.
  • 976
  • 29 Apr 2022
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