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Properties and Uses of Microemulsions

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ISBN: 9789535131717 9789535131724 Year: Pages: 184 DOI: 10.5772/63187 Language: English
Publisher: IntechOpen
Subject: Chemistry (General)
Added to DOAB on : 2019-10-03 07:51:50

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Properties and Uses of Microemulsions is intended to provide the reader with some important applications and features of these systems. The intricate composition of microemulsions has made them applicable in many areas such as cosmetics, pharmaceuticals, food, agriculture, oil recovery, chemical synthesis of nanoparticles, and catalysts. An introductory chapter starts off with the description of these applications followed by methods of characterization. Thereafter, a few practical applications of microemulsions focusing on drug delivery, oil recovery, and formation of nanocatalysts are described followed by the third section discussing the theoretical and physical parameters predicting microemulsion properties. The use of spin-polarized paramagnetic probes, bending energetics, and study of self-propelled motion are some of the physical parameters employed to characterize the microemulsions.

Dendrimers - Fundamentals and Applications

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ISBN: 9781789230581 9781789230598 Year: Pages: 174 DOI: 10.5772/intechopen.68738 Language: English
Publisher: IntechOpen
Subject: Chemistry (General)
Added to DOAB on : 2019-10-03 07:51:51

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Dendrimers are defined as nanoscale macromolecules having a particular architecture consisting of treelike arms or branches. They are characterized by special properties that make them promising candidates in medicine, biology, materials science, synthetic organic chemistry, biotechnology, environmental engineering, optics, electronics, catalysis, electrochemistry, photochemistry, and sensors and even for production of cosmetics and personal care products. The dendrimers research field is growing day by day, and scientists are exploring new synthesis and functionalization methods in order to improve and to determine new properties and thus new applications. The main purpose of this book is to highlight the issues regarding properties and applications of dendrimers in the field of biology, medicine, liquid crystal devices, electronics, quantum devices, and self-healing technology.

Coordination Chemistry of Silicon

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ISBN: 9783038976387 Year: Pages: 225 DOI: 10.3390/books978-3-03897-639-4 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Chemistry (General) --- Inorganic Chemistry
Added to DOAB on : 2019-03-08 11:42:05
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The chemistry of silicon has always been a field of major concern due to its proximity to carbon on the periodic table. From the molecular chemist's viewpoint, one of the most interesting differences between carbon and silicon is their divergent coordination behavior. In fact, silicon is prone to form hyper-coordinate organosilicon complexes, and, as conveyed by reports in the literature, highly sophisticated ligand systems are required to furnish low-coordinate organosilicon complexes. Tremendous progress in experimental, as well as computational, techniques has granted synthetic access to a broad range of coordination numbers for silicon, and the scientific endeavor, which was ongoing for decades, was rewarded with landmark discoveries in the field of organosilicon chemistry. Molecular congeners of silicon(0), as well as silicon oxides, were unveiled, and the prominent group 14 metalloid proved its applicability in homogenous catalysis as a supportive ligand or even as a center of catalytic activity. This book focuses on the most recent advances in the coordination chemistry of silicon with transition metals as well as main group elements, including the stabilization of low-valent silicon species through the coordination of electron donor ligands. Therefore, this book is associated with the development of novel synthetic methodologies, structural elucidations, bonding analysis, and also possible applications in catalysis or chemical transformations using related organosilicon compounds.

Keywords

silanetriols --- disiloxane tetrols --- silsesquioxanes --- condensation --- molecular cage --- platinum --- primary silane --- hydrido complex --- oxidative addition --- ligand-exchange reaction --- X-ray crystallography --- Si–Cl activation --- germylene --- digermene --- digermacyclobutadiene --- palladium --- cluster --- cyclic organopolysilane --- template --- bridging silylene ligand --- isocyanide --- hydrogen bonds --- silicon --- 2-silylpyrrolidines --- stereochemistry --- X-ray crystallography --- Baird’s rule --- computational chemistry --- excited state aromaticity --- Photostability --- dye-sensitized solar cell --- disilanylene polymer --- photoreaction --- surface modification --- TiO2 --- silylene --- germylene --- N-heterocyclic carbene --- oxidative addition --- siloxanes --- host-guest chemistry --- supramolecular chemistry --- main group coordination chemistry --- hydrogen bonding --- adsorption --- bond activation --- bonding analysis --- density functional theory --- distorted coordination --- molecular orbital analysis --- silicon surfaces --- disilene --- functionalization --- ?-electron systems --- silicon --- N-heterocyclic carbenes --- bromosilylenes --- silyliumylidenes --- dehydrobromination --- silicon cluster --- siliconoid --- nanoparticle --- computation --- silicon --- N-heterocyclic carbenes --- silyliumylidenes --- small molecule activation --- mechanistic insights --- organosilicon --- reductant --- N-Heterocyclic tetrylene --- salt-free --- germanium --- germanethione --- germathioacid chloride --- N-heterocyclic carbines --- ?-chloro-?-hydrooligosilane --- titanium --- ruthenium --- dehydrogenative alkoxylation --- cluster --- isomerization --- silicon --- siliconoid --- subvalent compounds --- AIM --- DFT --- intermetallic bond --- 29Si NMR spectroscopy --- X-ray diffraction

Smart and Functional Polymers

Authors: --- ---
ISBN: 9783039215904 9783039215911 Year: Pages: 306 DOI: 10.3390/books978-3-03921-591-1 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Chemistry (General) --- Inorganic Chemistry
Added to DOAB on : 2019-12-09 11:49:16
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This book is based on the Special Issue of the journal Molecules on “Smart and Functional Polymers”. The collected research and review articles focus on the synthesis and characterization of advanced functional polymers, polymers with specific structures and performances, current improvements in advanced polymer-based materials for various applications, and the opportunities and challenges in the future. The topics cover the emerging synthesis and characterization technology of smart polymers, core?shell structure polymers, stimuli-responsive polymers, anhydrous electrorheological materials fabricated from conducting polymers, reversible polymerization systems, and biomedical polymers for drug delivery and disease theranostics. In summary, this book provides a comprehensive overview of the latest synthesis approaches, representative structures and performances, and various applications of smart and functional polymers. It will serve as a useful reference for all researchers and readers interested in polymer sciences and technologies.

Keywords

amphiphilicity --- phase change --- polyamino acids --- degradability --- fine-tuning --- pH responsive --- poly(methacrylamide)s --- phase transition --- catalyst --- CO2 --- heterogeneous catalysis --- molecular sieve --- polyether imidazole ionic liquid --- Vitamin E --- albumin --- core-shell nanoparticles --- paclitaxel --- multi-drug resistance --- breast cancer --- conducting polymer --- composite --- electrorheological --- smart fluid --- viscoelastic --- controlled polymerization --- reversible polymerization --- sustainable polymers --- pH responsive polymers --- nanomedicine --- tumor imaging --- drug delivery --- polymerization dispersion method --- polyaniline --- polyvinyl alcohol --- glutaraldehyde --- chemical activation --- Glycopolymer --- post-polymerization functionalization --- perfluoroaryl azides --- Staudinger reaction --- castor oil --- biomedical devices --- polyurethanes --- polycaprolactone-diol --- chitosan --- fluoropolymers --- melt-shear organization --- chemical resistance --- solvent responsiveness --- hydrophobicity --- core/shell particles --- emulsion polymerization --- particle processing --- ?-NaYF4 --- rare earth upconversion nanoparticles --- core–shell structure --- hydrogels --- applications --- targeted drug delivery --- drug release --- hydrophobic drug delivery --- clinical translation --- versatile platform --- administration routes --- diverse therapeutic areas --- hearing loss --- saffron --- endophytic exopolysaccharide --- gentamicin --- cochlear hair cell --- polymeric nanoparticles --- stimuli-sensitive polymers --- co-delivery systems --- synergistic effect --- nucleic acid delivery --- chemotherapy --- phenylboronic acid --- gel --- glucose sensitivity --- drug delivery --- diabetes therapy --- amphiphilic copolymer --- hydrolyzable polyurea --- micelle --- controlled drug delivery --- cancer chemotherapy --- polymerization or post-polymerization modification methods --- polymer-based supramolecular chemistry --- stimuli-responsive polymers --- shape memory polymers --- self-healing polymers --- polymers for industrial catalysis --- polymers for water or effluent treatment --- polymers for sensing, separation, and purification --- polymers for fabrication --- renewable polymer materials used for agriculture --- functional polymers used in food science --- polymers for information storage, electronics, and energy conversion --- functional polymers for diagnosis, imaging, drug delivery, and tissue engineering --- polymers with biological activity (e.g., antitumor, antidiabetic, and antimicrobial activity) --- polymer-based medical devices

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