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This reprint reports advances in the topic of Deep Eutectic Solvents regarding their use as green alternatives in different chemical applications. Studies on the extraction/preconcentration processes of pharmacologically relevant molecules, structural spectroscopic studies, and application in gas purification studies are reported. Two relevant reviews are also published in the context of carbon dioxide conversion and their use in the chemistry of transformations. This reprint therefore aims to summarize some of the pertinent issues in DES chemistry through relevant literature references.

absorption --- biogas --- deep eutectic solvents --- siloxanes --- materials --- API formulation --- gas sorbents --- ionothermal synthesis --- organic synthesis --- eutectic mixtures --- hydrogen bond acceptor --- hydrogen bond donor --- design of experiments --- Tauc plot --- band gap energy --- renewable energy --- electrochemical conversion --- carbon dioxide reduction --- functionalized ionic liquids (ILs) --- carbon dioxide transformation --- quercetin --- Deep Eutectic Solvents --- extraction --- preconcentration --- DESs water dilutions --- RP-HPLC-UV --- UHPLC-MS/MS --- recovery

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The book is dedicated to the work and achievements of Howard Flack. It combines articles which describe his own work and the advances he made in the field of crystallography, with original research articles which focus on aspects related to Howard Flack's interests.

pyrazine-benzimidazole --- spin crossover --- iron(II) --- ligand field --- nephelauxetic --- arylsulfonates --- pyridinium salt formation --- single-phase solvent system --- sulfonate synthesis --- sulfonyl chlorides --- X-ray crystallography --- crystallography --- Howard Flack --- 2-bromo-3-methylbutyric acid --- 2-bromo-3-methylbutanoic acid --- 2-bromoisovaleric acid --- halogenated carboxylic acid --- hydrogen bonding --- chirality --- absolute configuration --- racemate --- crystal structure --- Flack parameter --- coordination chemistry --- MOFs --- twinning --- structure analysis --- hydroborate --- anions packing --- lanthanide trichloride complexes --- diphosphine dioxide --- coordination complexes --- X-ray structures --- stereoselectivity --- hydrogen-bonding --- complex ion --- disiloxanes --- intermolecular interactions --- Hirshfeld surface analysis --- molecular models --- silicon --- γ-(+)-decalactone --- in situ cryo-crystallization --- flavoring agent --- lactone --- vibrational circular dichroism --- solid–gas reaction --- chemisorption --- nitrosyl --- Flack test --- Erdmann’s anion --- bath salts --- street drugs --- cocaine --- methamphetamine --- methylone --- π–π interactions --- racemic mimics --- kryptoracemic crystallization --- hydrogen-bond propensity --- hydrogen-bond coordination --- supramolecular synthon --- hydrogen-bond energies --- Cambridge Structural Database --- molecular electrostatic potential --- pyrazoles --- Rifamycin O --- ansamysin --- antibacterial --- semi-synthesis --- Alder-Ene --- conformation --- zwitterionic --- n/a --- solid-gas reaction --- Erdmann's anion --- π-π interactions

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The crystalline state is the most commonly used essential solid active pharmaceutical ingredient (API). The characterization of pharmaceutical crystals encompasses many scientific disciplines, but the core is crystal structure analysis, which reveals the molecular structure of essential pharmaceutical compounds. Crystal structure analysis provides important structural information related to the API's wide range of physicochemical properties, such as solubility, stability, tablet performance, color, and hygroscopicity. This book entitled “Pharmaceutical Crystals"" focuses on the relationship between crystal structure and physicochemical properties. In particular, the new crystal structure of pharmaceutical compounds involving multi-component crystals, such as co-crystals, salts, and hydrates, and polymorph crystals are reported. Such crystal structures were investigated in the latest studies that combined morphology, spectroscopic, theoretical calculation, and thermal analysis with crystallographic study. This book highlights the importance of crystal structure information in many areas of pharmaceutical science and presents current trends in the structure–property study of pharmaceutical crystals. The Guest Editors of this book hope the readers enjoy a wide variety of recent studies on Pharmaceutical Crystals.

crystal structure analysis --- n/a --- famotidine --- solution crystallization --- salt optimization --- structure determination from powder diffraction data --- Hirshfeld surface analysis --- DFT --- molecular docking study --- melting diagram --- dehydration --- hygroscopicity --- HBV --- Benzodioxole --- pharmaceutical crystals --- 4-b]indol-4-one --- pyrimidin-4(3H)-one --- liquid assisted grinding --- HOMO-LUMO --- dissolution --- cocrystal formation --- Raman spectroscopy --- carbamazepine --- hydrogen bonding --- 3 --- ondansetron --- physicochemical properties --- solubility --- succinic acid --- cocrystal --- adefovir dipivoxil --- hepatitis B --- polymorphs --- hydrogen-bond-acceptance ability --- DFT study --- Nitrofurantoin–4-dimethylaminopyridine (NF-DMAP) salt --- photostability --- on-line monitoring --- 5-dihydro-4H-pyrimido[5 --- Imidazole --- Semicarbazone --- crystal habit --- Crystal structure --- solvent-mediated polymorphic transformation --- ticagrelor --- hydrate --- pharmaceutical cocrystal --- malonic acid --- 1H-indole --- reactivity descriptors --- famoxadone --- crystal structure --- dicarboxylic acid --- hydrogen bond --- saccharin --- Nitrofurantoin-4-dimethylaminopyridine (NF-DMAP) salt

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Graphene-polymer nanocomposites continue to gain interest in diverse scientific and technological fields. Graphene-based nanomaterials present the advantages of other carbon nanofillers, like electrical and thermal conductivity, while having significantly lower production costs when compared to materials such as carbon nanotubes, for instance. In addition, in the oxidized forms of graphene, the large specific area combined with a large quantity of functionalizable chemical groups available for physical or chemical interaction with polymers, allow for good dispersion and tunable binding with the surrounding matrix. Other features are noteworthy in graphene-based nanomaterials, like their generally good biocompatibility and the ability to absorb near-infrared radiation, allowing for the use in biomedical applications, such as drug delivery and photothermal therapy.This Special Issue provides an encompassing view on the state of the art of graphene-polymer composites, showing how current research is dealing with new and exciting challenges. The published papers cover topics ranging from novel production methods and insights on mechanisms of mechanical reinforcement of composites, to applications as diverse as automotive and aeronautics, cancer treatment, anticorrosive coatings, thermally conductive fabrics and foams, and oil-adsorbent aerogels.

graphene oxide --- polymer composite fiber --- interfacial bonding --- polypropylene --- thermal stability --- graphene --- unsaturated polyester resins --- tung oil --- biobased polymer nanocomposites --- in situ melt polycondensation --- graphene polymer matrix composite --- polyamide 66 --- elongational flow --- hydrogen bond --- poly(trimethylene terephthalate) --- electrospinning --- composite fiber --- morphology --- crystallization --- electrical conductivity --- mechanical property --- elastic recovery --- cellulose nanofibers --- polyvinyl alcohol --- directional freeze-drying --- oil absorption --- graphene oxide–platinum nanoparticles nanocomposites --- prostate cancer --- cytotoxicity --- oxidative stress --- mitochondrial membrane potential --- DNA damage --- conducting polymer --- PANI --- LEIS --- corrosion --- fabric --- cellulose nanocrystal --- thermal conductivity --- adhesives --- cohesive zone model --- finite element method --- graphene-polymer nanocomposite --- graphene/polymer interface --- molecular dynamics --- regressive softening law --- polysulfone foams --- tortuosity --- water vapor induced phase separation --- scCO2 --- toughening mechanisms --- graphene nanoplatelets --- recycled rubber --- Halpin–Tsai --- SEM --- light emitting diode --- phototherapy --- polyethylene glycol --- thermal reduction --- n/a --- graphene oxide-platinum nanoparticles nanocomposites --- Halpin-Tsai

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Corrosion is a significant issue in many industrial fields. Among other strategies, coatings are by far the most important technology for corrosion protection of metallic surfaces. The Special Issue “Advanced Coatings for Corrosion Protection” has been launched as a means to present recent developments in any type of advanced coating for corrosion protection. This book compiles 15 contributions on metallic, inorganic, polymeric and nanoparticle enhanced coatings that provide corrosion protection as well as other functionalities.

fluorine free --- silanization --- superhydrophobic --- corrosion protection --- self-cleaning --- cathodic protection --- corrosion mitigation method --- potentiodynamic polarization test --- simulation --- pre-insulated pipeline --- zinc-rich coating --- cold galvanized coating --- durability --- magnesium --- microstructure --- coating --- corrosion --- polarization --- apatite --- scanning electrodeposition --- Ni-Fe-Co-P-CeO2 composite coating --- electrochemical corrosion behavior --- corrosion mechanism --- Zn-Al diffusion layer --- mechanical energy aided diffusion --- corrosion resistance --- electrochemistry --- aluminum foam --- electrodeposition --- compression test --- polyurea --- aging mechanism --- morphology --- chemical properties --- phase separation --- hydrogen bond --- magnesium alloy --- MAO coating --- corrosion behavior --- stratification phenomena --- marine environments --- aluminum alloy AlMg6 --- Al2O3 coating --- phase composition --- stress corrosion --- micro-arc oxidation --- polymer --- water hydraulic valve --- cavitation --- erosion --- coating selection --- molecular dynamics --- boride-based cermet --- laser cladding synthesis --- laser power --- hardness --- wear resistance --- MAX phase --- Ti2AlN --- PVD coating --- oxidation --- hydrogen permeation --- tungsten --- W–Cr–C coating --- carburization --- intergranular corrosion --- pitting corrosion --- stainless steel --- passivated --- electrochemical noise --- precipitation hardening --- metallic coatings --- anodizing layers --- passivation --- polymeric coatings --- laser cladding --- PVD --- superhydrophobic coatings --- composite coatings --- n/a --- W-Cr-C coating