Currently, natural and urban ecosystems are affected by different types of atmospheric deposition, which can compromise the balance environment. Plastic pollution represents one major threats for biota, including lichens. Epiphytic lichens have value as bioindicators environmental pollution, climate change, anthropic impacts. In this study, we aim to investigate lichen bioaccumulation airborne microplastics along an anthropogenic gradient. We sampled from Genera Cladonia Xanthoria highlight...

[reaction: see text] An efficient electrochemical synthesis of 5-methylene-1,3-oxazolidin-2-ones (2a-h) from acetylenic amines (1a-h) and carbon dioxide has been achieved by direct electrolysis solution MeCN Et4NPF6 containing the amine, with subsequent CO2 bubbling heating. The yields vary good to excellent, conditions are mild, use toxic harmful chemicals catalysts is avoided.

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A new carboxylating reagent ((-)CH(2)CN/CO(2)) was obtained by bubbling CO(2) in a CH(3)CN-TEAP (tetraethylammonium perchlorate) solution previously electrolyzed under galvanostatic control. Organic carbamates were isolated from these solutions after addition of amines and an alkylating agent. In this paper, we describe the optimized conditions for electrochemical synthesis CO(2), mild safe conditions, without any bases, probases, or catalysts. Carbamates primary secondary aliphatic high to...

Despite the well-known favorable chemical and mechanical properties of titanium-based materials for orthopedic dental applications, poor osseointegration implants, bacteria adhesion, excessive inflammatory response from host remain major problems to be solved. Here, antioxidant anti-inflammatory enzyme-like abilities ceria (CeOx) were coupled advantageous features titanium nanotubes (TiNTs). Cost-effective fast methods, such as electrochemical anodization drop casting, used build active...

Bivalves are often used as sentinel organisms for assessing microplastic (MP) pollution in marine ecosystems. However, MP contamination estuaries remains under-studied despite their high vulnerability to this type of pollution. This study aimed at evaluating Scrobicularia plana from two SW Spain (Guadiana and Guadalquivir), subjected different levels human pressure (low vs. high, respectively). A total 231 suspected items were detected, with an average abundance 1.96 ± 1.22 per individual...

Despite the significant contribution of titanium and its alloys for hard tissue regenerative medicine, some major issues remain to be solved. Implants' long-term stability is threatened by poor osseointegration. Moreover, bacterial adhesion excessive inflammatory response are also considered in design a device intended integrated into human body. Here, cerium mixed oxide (CeOx) coating was realized on pristine nanotubular-structured Ti Ti6Al4V surfaces using simple layer-by-layer...

Chiral 2-phenyl succinic ester derivatives have been obtained under mild conditions, in short times and with satisfactory yields by electrochemical reduction of chiral cinnamic acid a CO2 atmosphere. When 4R-(diphenylmethyl)-oxazolidin-2-one was used as auxiliary the two diastereoisomers could be easily separated flash chromatography R-isomer major product.

Frequently, in spite of the use a green reagent (the electron), electrochemical methodologies are unable, owing to presence VOCs-supporting electrolytes solutions, suggest very eco-friendly and competitive procedures organic synthesis. In this paper, possible utilization room temperature ionic liquids, RTILs, as environmental-friendly solvents, instead volatile toxic solvents VOCs containing massive quantities supporting electrolytes, has been reported. addition, some new electroorganic...

Recently, imidazole-based ionic liquids have been widely used as starch plasticizers. These salts are very effective in transforming starch, a available and inexpensive biopolymer, into biodegradable films with good mechanical properties conductivity. could interesting applications flexible electronics solid polymer electrolytes. Since wide variety of cation–anion combinations can be used, it is useful to evaluate the impact different anion cation structures on plasticized select most...

The diastereoselective electrochemical carboxylation of chiral N-(2-bromoacyl)oxazolidin-2-ones has been studied. This reaction was carried out by cathodic reduction the C-Br bond, in presence carbon dioxide, followed treatment with diazomethane. yields and diastereomeric ratio two epimeric alkylmalonic acid derivatives are strongly affected various factors: solvent-supporting electrolyte system, temperature, electrode material, electrolysis conditions, oxazolidinone moiety. higher (88%)...

Functionalization of poly(ε-caprolactone) (PCL) was performed via hydrolysis and subsequent grafting lactose-modified chitosan (chitlac) at two different degrees derivatization (9% 64%). Time flight secondary ion mass spectrometry (ToF-SIMS) multivariate analysis (principal component analysis) were successfully applied to the characterization PCL surface chemistry, evidencing changes in biopolymer following base-catalyzed treatment. ToF-SIMS also confirmed positive EDC/NHS-catalyzed (EDC:...

[reaction: see text] Electrochemical carboxylation of N-(2-bromopropionyl)-4R-phenyloxazolidin-2-one aimed at the synthesis and chiral resolution unsymmetrical methylmalonic ester derivatives is described. The presence Evans' auxiliary permits an easy mixture two diastereoisomers.

Ruthenium oxide (RuOx) thin films were spin coated by thermal decomposition of alcoholic solutions RuCl3 on titanium foils and subsequently annealed at 400 °C. The effect coating parameters, such as spinning speed, volume, molar concentration the precursor well number deposits, morphology electrochemical performance electrodes was investigated. characterized scanning electron microscopy (SEM) equipped with energy-dispersive X-ray spectroscopy (EDX), cyclic voltammetry (CV) without chloride,...

Ectopic calcifications are observed in many soft tissues and associated with several diseases, including cancer. The mechanism of their formation the correlation disease progression often unclear. Detailed knowledge chemical composition these inorganic formations can be very helpful better understanding relationship unhealthy tissue. In addition, information on microcalcifications useful for early diagnosis provide insight into prognosis. this work psammoma bodies (PBs) found human ovarian...

Abstract Solvent‐ and supporting electrolyte‐free electrolysis in a two‐compartment cell proved to be effective for the direct electroactivation of CH acid‐containing compounds vs. catalytic addition processes. Michael adducts (including quaternary carbon centres) 2‐nitroalkanols were obtained very good yields selectivity on application amount electricity under galvanostatic conditions.

The development of mixed oxide electrodes is being intensively investigated to reduce the high cost associated with use noble metals and obtain versatile long-lasting devices. To evaluate their for charge storage or anodic oxidation, in this paper, thin-film coated ruthenium (RuOx) copper (CuOx) are fabricated by thermal decomposition organic solutions containing precursors drop-casting on titanium (Ti) foils. coating consisted four layers metal oxide. investigate effect (Cu) electrochemical...