Download or read book Interaction of Metal and Oxide Surfaces with Thin Films of Polar Phthalocyanines written by Małgorzata Polek and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In the first part of this thesis, interface properties of polar phthalocyanines (Pc's): chloroaluminum(III) phthalocyanine (AlClPc) and fluoroaluminum(III) phthalocyanine (AlFPc) are investigated in form of thin films deposited on two types of silver surfaces: a single crystal and a foil. The samples were analyzed with X-ray and ultraviolet photoemission spectroscopy (XPS and UPS). A strong interaction between the organic material and silver surface has been found, which is independent of silver substrate type used. The molecules undergo a loss of their central atom ligand, with the molecule ring staying intact. After de-attachment, the central atom ligand forms a bond with silver surface leading to the formation of Ag-Cl and Ag-F bonds on the surface of silver. What is more, roughness of the substrate surface influences the interface properties. An additional intensity is formed close to the Fermi edge for monolayer thick films. It is present only on substrates with high roughness and is an indication of gap states formation. In the second part of thesis, interface properties of chloroaluminum(III) phthalocyanine (AlClPc) at the interface to two rutile titanium dioxide single crystal surfaces: (001) and (100) surface, have been studied with XPS and UPS. Additionally, the substrates were characterized with low energy electron diffraction (LEED) to provide information on surface structure and reconstruction. A strong interaction has been found between nitrogen atoms of phthalocyanine ring and titanium dioxide surface. The interaction is stronger on the (001) surface than the (100) surface due to their different surface structure, leading to the lower reactivity of the latter one. The reactivity can be varied with number of defects in the crystal structure. The interaction was found to depend on the amount of defects present. As a consequence, using oxygen during preparation steps decreases the amount of defects and allows to quench the interaction. Furthermore, investigation of film growth on TiO2 substrates was performed using mainly microscopy methods: atomic force microscopy and scanning electron microscopy (AFM, SEM). Decrease of substrate signal intensity observed in XPS provided complementary information on film growth. It has been found that the surface type has a strong influence on the AlClPc growth mode since the organic films have a layer-island growth on the (001) surface and possible island-only growth on the (100) surface. Introduction of defects influences the film morphology since the islands are more dense and smaller in size on oxygen treated (“defect-free”) surface, while the island distribution on a reduced (defect-rich) (100) surface is scarce, and the islands are bigger in size. Based on the results of experiments presented in this thesis, it was found that the interaction of phthalocyanines can be controlled with the substrate surface type: although charge transfer from the molecule to the substrate is observed on both surfaces, the interaction with silver influences the phthalocyanine center, while interaction with titanium dioxide influences the phthalocyanine ring. Additionally, the reactivity of phthalocyanine molecules towards the titanium dioxide single crystals is dependent on the amount of defects present, thus can be controlled through adjustment of sample preparation conditions. The type and preparation of TiO2 surface has influence on film growth mode as well.
Download or read book A Study of the Interactions of Polar Organic Molecules with Metal and Metal Oxide Surfaces written by Anthony Vincent Fraioli and published by . This book was released on 1956 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design and Development of Nanostructured Thin Films written by Antonella Macagnano and published by MDPI. This book was released on 2020-05-13 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to their unique size-dependent physicochemical properties, nanostructured thin films are used in a wide range of applications from smart coating and drug delivery to electrocatalysis and highly-sensitive sensors. Depending on the targeted application and the deposition technique, these materials have been designed and developed by tuning their atomic-molecular 2D- and/or 3D-aggregation, thickness, crystallinity, and porosity, having effects on their optical, mechanical, catalytic, and conductive properties. Several open questions remain about the impact of nanomaterial production and use on environment and health. Many efforts are currently being made not only to prevent nanotechnologies and nanomaterials from contributing to environmental pollution but also to design nanomaterials to support, control, and protect the environment. This Special Issue aims to cover the recent advances in designing nanostructured films focusing on environmental issues related to their fabrication processes (e.g., low power and low cost technologies, the use of environmentally friendly solvents), their precursors (e.g., waste-recycled, bio-based, biodegradable, and natural materials), their applications (e.g., controlled release of chemicals, mimicking of natural processes, and clean energy conversion and storage), and their use in monitoring environment pollution (e.g., sensors optically- or electrically-sensitive to pollutants)
Download or read book Thin Film Growth written by Zexian Cao and published by Elsevier. This book was released on 2011-07-18 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thin film technology is used in many applications such as microelectronics, optics, hard and corrosion resistant coatings and micromechanics, and thin films form a uniquely versatile material base for the development of novel technologies within these industries. Thin film growth provides an important and up-to-date review of the theory and deposition techniques used in the formation of thin films.Part one focuses on the theory of thin film growth, with chapters covering nucleation and growth processes in thin films, phase-field modelling of thin film growth and surface roughness evolution. Part two covers some of the techniques used for thin film growth, including oblique angle deposition, reactive magnetron sputtering and epitaxial growth of graphene films on single crystal metal surfaces. This section also includes chapters on the properties of thin films, covering topics such as substrate plasticity and buckling of thin films, polarity control, nanostructure growth dynamics and network behaviour in thin films.With its distinguished editor and international team of contributors, Thin film growth is an essential reference for engineers in electronics, energy materials and mechanical engineering, as well as those with an academic research interest in the topic. - Provides an important and up-to-date review of the theory and deposition techniques used in the formation of thin films - Focusses on the theory and modelling of thin film growth, techniques and mechanisms used for thin film growth and properties of thin films - An essential reference for engineers in electronics, energy materials and mechanical engineering
Download or read book Sensors Chemical and Biochemical Sensors written by Joachim Hesse and published by John Wiley & Sons. This book was released on 2008-11-20 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt: 'Sensors' is the first self-contained series to deal with the whole area of sensors. It describes general aspects, technical and physical fundamentals, construction, function, applications and developments of the various types of sensors. This is the first of two volumes focusing on chemical and biochemical sensors providing definitions, typical examples of chemical and biochemical sensors and historical remarks. It describes chemical sensor technologies and interdisciplinary tasks in the design of chemical sensors. The major part consists of a description of basic sensors. They include electrolyte sensors, solid electrolyte sensors, electronic conductivity and capacitance sensors, field effect sensors, calorimetric sensors, optochemical sensors, and mass sensitive sensors. This volume is an indispensable reference work for both specialists and newcomers, researchers and developers.
Download or read book Encyclopedia of Interfacial Chemistry written by and published by Elsevier. This book was released on 2018-03-29 with total page 5276 pages. Available in PDF, EPUB and Kindle. Book excerpt: Encyclopedia of Interfacial Chemistry: Surface Science and Electrochemistry, Seven Volume Set summarizes current, fundamental knowledge of interfacial chemistry, bringing readers the latest developments in the field. As the chemical and physical properties and processes at solid and liquid interfaces are the scientific basis of so many technologies which enhance our lives and create new opportunities, its important to highlight how these technologies enable the design and optimization of functional materials for heterogeneous and electro-catalysts in food production, pollution control, energy conversion and storage, medical applications requiring biocompatibility, drug delivery, and more. This book provides an interdisciplinary view that lies at the intersection of these fields. Presents fundamental knowledge of interfacial chemistry, surface science and electrochemistry and provides cutting-edge research from academics and practitioners across various fields and global regions
Download or read book The Molecule Metal Interface written by Norbert Koch and published by John Wiley & Sons. This book was released on 2013-02-08 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reviewing recent progress in the fundamental understanding of the molecule-metal interface, this useful addition to the literature focuses on experimental studies and introduces the latest analytical techniques as applied to this interface. The first part covers basic theory and initial principle studies, while the second part introduces readers to photoemission, STM, and synchrotron techniques to examine the atomic structure of the interfaces. The third part presents photoelectron spectroscopy, high-resolution UV photoelectron spectroscopy and electron spin resonance to study the electronic structure of the molecule-metal interface. In the closing chapter the editors discuss future perspectives. Written as a senior graduate or senior undergraduate textbook for students in physics, chemistry, materials science or engineering, the book's interdisciplinary approach makes it equally relevant for researchers working in the field of organic and molecular electronics.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Russian Journal of Physical Chemistry written by and published by . This book was released on 1978 with total page 990 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2540 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ferroelectrics Literature Index written by T. F. Connolly and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 713 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research on ferroelectricity and ferroelectric materials started in 1920 with the discovery by Valasek that the variation of spontaneous polarization in Rochelle salt with sign and magnitude of an applied electric field traced a complete and reproducible hysteresis loop. Activity in the field was sporadic until 1935, when Busch and co-workers announced the observation of similar behavior in potassium dihydrogen phosphate and related compounds. Progress thereafter continued at a modest level with the undertaking of some theoretical as well as further experimental studies. In 1944, von Hippel and co-workers discovered ferroelectricity in barium titanate. The technological importance of ceramic barium titanate and other perovskites led to an upsurge of interest, with many new ferroelectrics being identified in the following decade. By 1967, about 2000 papers on various aspects of ferroelectricity had been published. The bulk of this widely dispersed literature was concerned with the experimental measurement of dielectric, crystallographic, thermal, electromechanical, elastic, optical, and magnetic properties. A critical and excellently organized cpmpilation based on these data appeared in 1969 with the publica tion of Landolt-Bornstein, Volume 111/3. This superb tabulation gave instant access to the results in the literature on nearly 450 pure substances and solid solutions of ferroelectric and antiferroelectric materials. Continuing interest in ferroelectrics, spurred by the growing importance of electrooptic crystals, resulted in the publication of almost as many additional papers by the end of 1969 as had been surveyed in Landolt-Bornstein.
Download or read book Chemical Sensors and Biosensors written by Florinel-Gabriel Banica and published by John Wiley & Sons. This book was released on 2012-08-15 with total page 795 pages. Available in PDF, EPUB and Kindle. Book excerpt: Key features include: Self-assessment questions and exercises Chapters start with essential principles, then go on to address more advanced topics More than 1300 references to direct the reader to key literature and further reading Highly illustrated with 450 figures, including chemical structures and reactions, functioning principles, constructive details and response characteristics Chemical sensors are self-contained analytical devices that provide real-time information on chemical composition. A chemical sensor integrates two distinct functions: recognition and transduction. Such devices are widely used for a variety of applications, including clinical analysis, environment monitoring and monitoring of industrial processes. This text provides an up-to-date survey of chemical sensor science and technology, with a good balance between classical aspects and contemporary trends. Topics covered include: Structure and properties of recognition materials and reagents, including synthetic, biological and biomimetic materials, microorganisms and whole-cells Physicochemical basis of various transduction methods (electrical, thermal, electrochemical, optical, mechanical and acoustic wave-based) Auxiliary materials used e.g. synthetic and natural polymers, inorganic materials, semiconductors, carbon and metallic materials properties and applications of advanced materials (particularly nanomaterials) in the production of chemical sensors and biosensors Advanced manufacturing methods Sensors obtained by combining particular transduction and recognition methods Mathematical modeling of chemical sensor processes Suitable as a textbook for graduate and final year undergraduate students, and also for researchers in chemistry, biology, physics, physiology, pharmacology and electronic engineering, this bookis valuable to anyone interested in the field of chemical sensors and biosensors.
Download or read book Biochemical Sensors In 2 Volumes written by Huangxian Ju and published by World Scientific. This book was released on 2021-06-08 with total page 997 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the full scope of biochemical sensors and offers a survey of the principles, design and applications of the most popular types of biosensing devices. It is presented in 19 chapters, written by 20 distinguished scientists as well as their co-workers. The topics include the design of signal transducers, signal tags and signal amplification strategies, the structure of biosensing interfaces with new biorecognition elements such as aptamers and DNAzymes, and different newly emerging nanomaterials such as Au nanoclusters, carbon nitride, silicon, upconversion nanoparticles and two-dimensional materials, and the applications in wearable detections, biofuel cells, biomarker analyses, bioimaging, single cell analysis and in vivo sensing.By discussing recent advances, it is hoped this book will bridge the common gap between research literature and standard textbooks. Research into biochemical sensors and their biomedical applications is proceeding in a number of exciting directions, as reflected by the content. This book is published in honor of the 90th birthday of Professor Shaojun Dong, who performed many pioneering studies on modified electrodes and biochemical sensors.
Download or read book Sensors written by W. Göpel and published by . This book was released on 1991 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Sensors is the first self-contained series to deal with the whole area of sensors. It describes general aspects, technical and physical fundamentals, construction, function, applications and developments of the various types of sensors. Consisting of nine volumes altogether, with eight dedicated to various topics and the ninth as cumulative index, each volume offers in-depth information in one particular field within sensor technology. The entire set is an indispensable reference work for both specialists and newcomers, researchers and developers working in this interdisciplinary field that ranges from research to commercial application." -- Publisher's website.
Download or read book Specialty Polymers written by Faiz Mohammad and published by I. K. International Pvt Ltd. This book was released on 2007 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt: The synthetic counterparts of natural polymeric materials are now finding applications as light weight, mechanically strong, and environmentally stable sheets, fibers, films, adhesives, paints, and foams have replaced most of the commodity and structural materials. The systematic research on the preparation, characterization, and utilization of plastics resulted in creation of polymers often containing a set of several desirable properties in a single polymer. The polymers have established their place in engineering applications as well. Although the bulk of plastics production focuses on relatively simple commodity polymers, the proportion of specially designed and tailor-made plastics for specific and sophisticated applications is also increasing at a great pace. The specialty plastics, as well as their use in specific and sophisticated applications, are the key to the continued scientific growth and technological advances in the new millennium. This book thoroughly covers today's rapidly growing field of specialty polymers and their applications in more sophisticated and specialized areas. It gives the most recent in-depth knowledge and extremely comprehensive details of the chemistry, physics, material science, technology, and device applications of specialty polymers. This comprehensive book containing 16 chapters is the result of the untiring efforts of 35 most renowned experts from the national and international scientific community. This book is thought-provoking to the researchers working in the fields of chemistry, biochemistry, biotechnology, medicine, polymer chemistry, semiconductor physics, material science, electrochemistry, biology, electronics, photonics, material science, solid state physics, nanotechnology, electrical and electronics engineering, optical engineering, device engineering, data storage, etc.
Download or read book Sensors Chemical and Biochemical Sensors written by Wolfgang Göpel and published by Wiley-VCH. This book was released on 1997-07-14 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt: 'Sensors' is the first self-contained series to deal with the whole area of sensors. It describes general aspects, technical and physical fundamentals, construction, function, applications and developments of the various types of sensors. This is the first of two volumes focusing on chemical and biochemical sensors providing definitions, typical examples of chemical and biochemical sensors and historical remarks. It describes chemical sensor technologies and interdisciplinary tasks in the design of chemical sensors. The major part consists of a description of basic sensors. They include electrolyte sensors, solid electrolyte sensors, electronic conductivity and capacitance sensors, field effect sensors, calorimetric sensors, optochemical sensors, and mass sensitive sensors. This volume is an indispensable reference work for both specialists and newcomers, researchers and developers.
Download or read book Sensors Chemical and biochemical sensors written by W. Göpel and published by . This book was released on 1991 with total page 746 pages. Available in PDF, EPUB and Kindle. Book excerpt:
