Hybrid Materials Of Block Copolymers And Magnetic Nanoparticles
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| Author | : Zhihan Zhou |
| Publisher | : |
| Total Pages | : 434 |
| Release | : 2010 |
| Genre | : |
| ISBN | : |
In this PhD thesis, the preparation of several types of hybrid materials of block copolymer and magnetic nanoparticles is described. The diversified morphologies of nanoaggregates formed by dispersing poly(glyceryl methacrylate)-block-poly(2-cinnamoyloxyethyl methacrylate)-block-poly(tert-butyl acrylate) tri-block copolymers in block selective solvents will be reported first. The volume occupied by the core block in these nanoaggregates can be swollen by solvent, and the core block can be sculpted. The cores can act potentially as the template to grow magnetic nanoparticles. Thus, a potential method for preparing hybrid magnetic materials of block copolymers and magnetic nanoparticles with different morphologies is developed. A one-pot method to synthesize cobalt nanoparticles covered by a polymer shell is then reported. This is achieved by thermally decomposing dicobalt octacarbonyl in the presence of polymeric multi-dentate ligand poly(ethylene glycol)-block-poly(acrylic acid). Using a similar method, cobalt nanoparticles covered by poly(2-cinnamoyloxyethyl methacryate)-block-poly(acrylic acid) ligand are synthesized. The cobalt nanoparticles fuse into chains for their magnetic dipole-dipole interaction. The chains are then coated with poly(tert-butyl acrylate)-block-poly(2-cinnamoyloxyethyl methacrylate). The coated Co chains are further locked by photo-crosslinking the poly(2-cinnamoyloxyethyl methacrylate) segments. The as-prepared cobalt nano wires have interesting magnetic response and may be used to build complicated magnetic nano devices. Another hybrid magnetic material is prepared via an oil-in-water emulsion method. The oil phase of the emulsion sphere consists of r-Fe2O3 magnetic nanoparticles covered with the poly(2-cinnamoyloxyethyl methacryate)-block-poly(acrylic acid) ligand and a poly(2-cinnamoyloxyethyl methacryate) homopolymer. It was dispersed in water using a mixture of poly(2-cinnamoyloxyethyl methacrylate)-block-poly(succinoylglyceryl methacrylate) and poly(2-cinnamoyloxyethyl methacrylate)-block-poly(glyceryl methacrylate) as the surfactants. The evaporation of the organic solvent left behind solid particles in water. The polymer chains on the surface of the obtained spheres allow the immobilization of biomolecules. Factors affecting the emulsion process are studied systematically. The emulsion spheres are characterized using TEM, AFM, TGA and etc. The emulsion sphere have potential application is immunoassay. The protein binding capacity of the spheres is determined.
| Author | : Andrea Ehrmann |
| Publisher | : Woodhead Publishing |
| Total Pages | : 761 |
| Release | : 2021-06-23 |
| Genre | : Technology & Engineering |
| ISBN | : 0128236892 |
Magnetic Nanoparticle-Based Hybrid Materials: Fundamentals and Applications introduces the principles, properties, and emerging applications of this important materials system. The hybridization of magnetic nanoparticles with metals, metal oxides and semiconducting nanoparticles may result in superior properties. The book reviews the most relevant hybrid materials, their mechanisms and properties. Then, the book focuses on the rational design, controlled synthesis, advanced characterizations and in-depth understanding of structure-property relationships. The last part addresses the promising applications of hybrid nanomaterials in the real world such as in the environment, energy, medicine fields. Magnetic Nanoparticle-Based Hybrid Materials: Fundamentals and Applications comprehensively reviews both the theoretical and experimental approaches used to rapidly advance nanomaterials that could result in new technologies that impact day-to-day life and society in key areas such as health and the environment. It is suitable for researchers and practitioners who are materials scientists and engineers, chemists or physicists in academia and R&D. Provides in-depth information on the basic principles of magnetic nanoparticles-based hybrid materials such as synthesis, characterization, properties, and magnon interactions Discusses the most relevant hybrid materials systems including integration of metals, metal oxides, polymers, carbon and more Addresses the emerging applications in medicine, the environment, energy, sensing, and computing enabled by magnetic nanoparticles-based hybrid materials
| Author | : Yue Gai |
| Publisher | : |
| Total Pages | : |
| Release | : 2017 |
| Genre | : |
| ISBN | : |
The "bottom-up" fabrication of functional hybrid material can be achieved by using directed self-assembly of functional nanoparticles (NP) and block copolymers (BCP) as templates. The versatile nanostructures of BCP provide possibilities to precisely control NPs spatial distribution and the resulting hybrid materials exhibit enhanced electrical, mechanical and optical functionalities. Three main topics related to BCP/NP composites are discussed in this dissertation: I) the spatial distribution of large NP in linear BCP; II) the morphology control of BCP templates with new architectures; and III) the magneto-optical properties of hybrid material using magnetic NPs. For well-ordered BCP/NP composite, the ratio of NP core diameter (dcore) and BCP domain width (L) has been generally limited with dcore/L 0.3 when BCP/NP interactions are relatively neutral or weak. By modifying the Au NPs with hydrogen bonding (H-bonding) donor group, the selective spatial distribution of Au NPs ranges in size up to 0.8 times that of the target domain width in symmetric polystyrene-block-poly (2-vinylpyridine) (PS-b-P2VP). In addition, H-bonding meditated 15 nm NPs can be directed by linear BCP of dsubcore/sub/L up to 0.4 at 20wt % loading. The H-bonding interactions between NP and BCP provide favorable enthalpic interaction to overcome the inherent entropy penalties mainly arising from polymer chain stretching upon the sequestration of large particles. On the other hand, the extensive chain entanglements of linear BCP still remain a challenge for hybrid materials with the consequence of long processing duration, many defects and lack of orientation. Bottlebrush BCPs (BBCPs) exhibit much lower degree of chain entanglement due to the highly extended confirmation. A systematic study was conducted to investigate the morphology transitions that occur in polystyrene-block-poly (ethylene oxide) (PS-b-PEO) BBCPs upon varying PEO volume fraction (fsubPEO/sub) from 22 % to 81 %. Either symmetric or asymmetric lamellar morphologies were observed in the BBCPs over an exceptionally wide range of fsubPEO/sub from 28 % to 72 %. A microphase transition temperature TsubMST/sub was observed over a temperature range of 150-180 °C. Finally, enhanced magneto-optical (MO) composites with excellent Faraday rotation (FR) response were fabricated using iron platinum (FePt) NPs and PS-b-P2VP linear BCP. Gallic acid (GA) functionalized FePt NPs with average dsubcore/sub from 1.9 to 9.3 nm were selectively incorporated into a P2VP domain through H-bonding interactions. The use of copolymer template to selectively arrange the magnetic NPs enabled high MO performance with limited trade-off of scattering loss, providing a simple strategy to prepare functional materials for MO applications. Verdet constants of a 10 wt % loaded 4.9 nm FePt NP composite reached absolute magnitudes as high as ~ -6x10sup4
| Author | : Kwang-Sup Lee |
| Publisher | : Springer |
| Total Pages | : 242 |
| Release | : 2010-08-12 |
| Genre | : Technology & Engineering |
| ISBN | : 3642136273 |
-On the Mechanisms Leading to Exfoliated Nanocomposites Prepared by Mixing By C. D. Han -Phase Behavior and Phase Transitions in AB- and ABA-type Microphase-Separated Block Copolymers By J. K. Kim, C. D. Han -New Class Materials of Organic–Inorganic Hybridized Nanocrystals/Nanoparticles, and Their Assembled Microand Nano-Structure Toward Photonics By H. Oikawa, T. Onodera, A. Masuhara, H. Kasai, H. Nakanishi -Poly(substituted Methylene) Synthesis: Construction of C–C Main Chain from One Carbon Unit By E. Ihara
| Author | : Stanislav Rangelov |
| Publisher | : CRC Press |
| Total Pages | : 504 |
| Release | : 2013-08-28 |
| Genre | : Science |
| ISBN | : 1439869073 |
Polymeric and hybrid nanoparticles have received increased scientific interest in terms of basic research as well as commercial applications, promising a variety of uses for nanostructures in fields including bionanotechnology and medicine. Condensing the relevant research into a comprehensive reference, Polymer and Polymer-Hybrid Nanoparticles: From Synthesis to Biomedical Applications covers an array of topics from synthetic procedures and macromolecular design to possible biomedical applications of nanoparticles and materials based on original and unique polymers. The book presents a well-rounded picture of objects ranging from simple polymeric micelles to complex hybrid polymer-based nanostructures, detailing synthetic procedures, techniques for characterization and analysis, properties, and behavior in selective solvents and dispersions. Each chapter contains background and introductory information, summarizing generalities on the nanosystems being discussed. The chapters also describe representative works of experts and provide in-depth, focused discussions. The authors present current knowledge on the following topics: Designed synthesis of functional polymers Construction of block copolymer micellar and nonmicellar self-assembled structures Construction of organic–organic hybrid nanosized particles Construction of organic–inorganic hybrid nanoparticles and nanoassemblies The final chapter addresses biological applications of polymeric nanoparticles, including delivery of low-molecular-weight drugs, macromolecular drugs, imaging and diagnostics, and photodynamic therapy. Summarizing important developments in the field, the authors condense relevant research into a comprehensive resource.
| Author | : |
| Publisher | : World Scientific |
| Total Pages | : 1216 |
| Release | : 2019-03-11 |
| Genre | : Science |
| ISBN | : 9813270500 |
The World Scientific Reference of Hybrid Materials is a set of 3 volumes, which covers the fascinating area of materials science at the intersection between purely polymeric, organic or inorganic materials. The rapidly developing research on hybrid materials is largely driven by the steadily increasing need of multifunctional materials in various branches of technology. However, much of the research is also driven by the curiosity of the researchers and the long lasting wish to merge the most beneficial properties of the various materials into one. The flexibility of polymers could, for example, be merged with the electronic conductivity of metals or the mechanical resistance of ceramics, which will be of great value for the industries.This reference covers the areas of synthesis of such hybrid materials, which take benefit from each of the consisting ingredients, and overviews some of the emerging applications based on the materials. Much of the current research is still in its infancy, but hybrid materials are already now considered to be the key enabler for important future developments, for example flexible electronics. With this perspective, this reference aims at giving the general public an overview over the topics of relevance in this field, but also attracting new researchers to this intriguing scientific area.
| Author | : Stefan Odenbach |
| Publisher | : Walter de Gruyter GmbH & Co KG |
| Total Pages | : 1172 |
| Release | : 2021-10-25 |
| Genre | : Science |
| ISBN | : 3110568837 |
Externally tunable properties allow for new applications of magnetic hybrid materials containing magnetic micro- and nanoparticles in sensors and actuators in technical and medical applications. By means of easy to generate and control magnetic fields, changes of the internal particle arrangements and the macroscopic properties can be achieved. This monograph delivers the latest insights into multi-scale modelling, experimental characterization, manufacturing and application of those magnetic hybrid materials.
| Author | : |
| Publisher | : |
| Total Pages | : 1216 |
| Release | : 2019 |
| Genre | : Copolymers |
| ISBN | : 9789813270565 |
"The World Scientific Reference of Hybrid Materials is a set of 3 volumes, which covers the fascinating area of materials science at the intersection between purely polymeric, organic or inorganic materials. The rapidly developing research on hybrid materials is largely driven by the steadily increasing need of multifunctional materials in various branches of technology. However, much of the research is also driven by the curiosity of the researchers and the long lasting wish to merge the most beneficial properties of the various materials into one. The flexibility of polymers could, for example, be merged with the electronic conductivity of metals or the mechanical resistance of ceramics, which will be of great value for the industries. This reference covers the areas of synthesis of such hybrid materials, which take benefit from each of the consisting ingredients, and overviews some of the emerging applications based on the materials. Much of the current research is still in its infancy, but hybrid materials are already now considered to be the key enabler for important future developments, for example flexible electronics. With this perspective, this reference aims at giving the general public an overview over the topics of relevance in this field, but also attracting new researchers to this intriguing scientific area."-
| Author | : Yoshiki Chujo |
| Publisher | : Springer |
| Total Pages | : 444 |
| Release | : 2018-12-22 |
| Genre | : Technology & Engineering |
| ISBN | : 9811328897 |
This book introduces the recent progress that has resulted from utilizing the idea of "element-block polymers". A structural unit consisting of various groups of elements is called an "element-block." The design and synthesis of new element-blocks, polymerization of these blocks, and development of methods of forming higher-order structures and achieving hierarchical interface control in order to yield the desired functions are expected to result in manifold advantages. These benefits will encourage the creation of new polymeric materials that share, at a high level, electronic, optical, and magnetic properties not achievable with conventional organic polymeric materials as well as forming properties of molding processability and flexible designability that inorganic materials lack. By pioneering innovative synthetic processes that exploit the reactivity of elements and the preparation techniques employed for inorganic element-blocks, the aim is (1) to create a new series of innovative polymers based on the novel concept of element-block polymers, in which the characteristics of elements are extensively combined and utilized, and (2) to formulate theories related to these polymers. This book demonstrates especially the design strategies and the resulting successful examples offering highly functional materials that utilize element-block polymers as a key unit.
| Author | : Guido Kickelbick |
| Publisher | : John Wiley & Sons |
| Total Pages | : 516 |
| Release | : 2007-02-27 |
| Genre | : Science |
| ISBN | : 3527610480 |
Hybrid materials have currently a great impact on numerous future developments including nanotechnology. This book presents an overview about the different types of materials, clearly structured into synthesis, characterization and applications. A perfect starting point for everyone interested in the field, but also for the specialist as a source of high quality information.
