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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 50 for “"Crystal engineering"”.
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Crystal Engineering molekularer Festkörper
Die vorliegende Arbeit befasst sich mit der Kristallisation und der Co-Kristallisation kleiner und starrer organischer Moleküle. Im Mittelpunkt standen dabei die beiden Moleküle Benzoesäure (HBz) und Benzamid. HBz und seine Alkalimetallsalze (Natriumbenzoat (NaBz) und Kaliumbenzoat (KBz)) werden in …
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Crystal Engineering of Flavonoids
Crystal engineering is attracting attention in the pharmaceutical industry because the design of new crystal form of drugs can improve their stability, bioavailability and other relevant physical characteristic properties. Therefore, crystal engineering of nutraceuticals such as flavonoids by …
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Crystal engineering approaches to solid-state pharmaceutical systems
… actively manipulating it, via salt formation, co-crystal synthesis or inclusion complexation, for example. Presented in this work are three distinct approaches to the control and development of solid-state form of organic molecules and pharmaceuticals. The first of these approaches reports a …
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Novel Technology for Crystal Engineering of Pharmaceutical Solids
… water (MASCW)" technology for particle engineering of active pharmaceutical ingredients and excipients was developed. The present novel technology MASCW process is described as green technology as water is used as the solvent medium and microwave energy as external source of heat energy …
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Crystal engineering of mixed-ligand metal-organic frameworks
… years in terms of supramolecular chemistry and crystal engineering. The synthesis and characterisation of metal organic frameworks (MOFs) have attracted widespread attention owing to their potential in various applications. This includes gas sorption, which could aid in alleviating serious …
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Crystal Engineering In Antisolvent Crystallization Of Neodymium Sulfate
Antisolvent crystallization is a separation technology that separates a solute from the solvent by the addition of another solvent, in which the solute is sparingly soluble. High yields are achieved by using higher antisolvent-to-solvent ratios, but this generates higher supersaturation, which …
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Functional ionic liquids in crystal engineering and drug delivery
… is to explore the use of ionic liquds in crystal engineering and drug delivery. Ionic liquids have a wide range of applications in pharmaceutical field due to their unique physicochemical propertie ssuch as chemical, thermal stability, low melting point, nonvolatility, nonflamability, low …
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Solvent Free Technologies for Polymer based Crystal Engineering and Drug Delivery
… of pharmaceutical amorphous system and cocrystals for poorly water soluble APIs. The S3M technology is getting first time reported for its application in pharmaceutical field and it is considered as technology with good potential for development of pharmaceutical dosage forms. The main …
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Crystal engineering of MOF based on polypyridyl ligands and coordinatively unsatured NiII ions
… main concepts of supramolecular chemistry and crystal engineering. The objectives of the research are outlined and the square planar NiII phosphorodithioato complexes used as the building blocks in the building up of the polymers introduced. The tendency of these coordinatively unsaturated …
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Crystal engineering and sorption studies of cyclotriveratrylene and C-methylcalix[4]resorcinarene solvates
Cyclotriveratrylene compounds crystallised from acetonitrile (1) and 2-butanone (4) are shown to be nearly isostructural, resulting in the formation of dimeric capsules, while the compound which crystallised from chloroform (3) results in the formation of layers of cyclotriveratrylene molecules …
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Crystal engineering of novel organic-inorganic compounds of N- and O-donor dipyridyl ligands
Crystal engineering based upon organic-inorganic compounds has made rapid progress in recent years. These compounds are known to combine the inherent advantages of both organic and inorganic substances. In this thesis, a range of metal compounds were investigated. These include compounds of …
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Crystal Engineering of Pharmaceuticals: Modulating Physicochemical Properties of Active Ingredients by the Formation of Cocrystals
… Aim of thesis is to evaluate potential of crystal engineering directed cocrystallisation of active ingredients in modulating their physical attributes. The model compounds considered are isoniazid, caffeine, nifedipine, glyburide, chlorpropamide and riboflavin. Co-formers selected are based …
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Crystal engineering of mixed-ligand metal-organic frameworks based on simple carboxylate and bipyridyl ligands
… decades research in supramolecular chemistry and crystal engineering have seen an exponential growth. The synthesis of metal-organic frameworks (MOFs) has attracted much interest worldwide due to the possibility of obtaining a large variety of structures with a wide range of applications in fields …
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Part I: Crystal Engineering Using Trimesic Acid Analogs. Part II: An Extremely Stable Hydrogen-Bonded Hexamer
Part II. In Part II, the design, synthesis and aggregation of pyrimido(4,5-b) (1,8) -naphthyridine-3H-4-one (1) in solution is reported. The design of self-complementary monomer 1 features a DDA and AAD motif, a low-generation dendrimer which provides suitable solubility in nonpolar organic …
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Crystal engineering of dynamic metal organic frameworks for applications in chromic sensing and capturing of small molecules
Crystal engineering of metal organic frameworks (MOFs) has developed rapidly over the years. This has been fuelled by useful properties endowed by these materials. MOFs present a unique platform to control chemical and physical properties through manipulation of the components that construct these …
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Crystal engineering of 2-periodic Ni- and Co-based, isoreticular, mixed ligand metal-organic frameworks for sorption studies
… polarities, however the relative degrees of crystallinity of the MOFs (before and after activation) seemed to be the major factor in explaining the large degree of variation in their sorption properties.
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CRYSTAL ENGINEERING STUDIES ON THE MOLECULAR SALTS AND SILVER(I) COORDINATION COMPOUNDS FOR [2+2] CYCLOADDITION REACTION IN THE SOLID STATE
… as a potential class of ligands for making co-crystals and coordination polymers.
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Crystal engineering, Bio Pharmaceutics and Cell biology of active pharmaceutical ingredient (drug) nanoparticles. Formation and cell interaction of hydrocortisone and prednisolone nanoparticles.
Nanotechnology applications have emerged enormously in recent times. Of particular interest is that area that overlaps the areas of nanotechnology, biology and medicine: nanomedicine. One advantage of nanomedicines is it that it can be used as an enabling technology by pharmaceutical researchers …
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Characterisation and topological analysis of novel metal-organic frameworks
… over the past few decades in terms of both crystal engineering and supramolecular chemistry. The preparation of new metal-organic frameworks and coordination polymers has been of particular interest due to the large variety of structural topologies as well as the varying functionalities they …
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