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and Application of Organic-Inorganic ..

1. Organic-Inorganic Nano-Hybrid Materials
Professor Chujo has been developing very new hybrid materials based on sol-gel reaction. Nano-ordered composite materials consisting of organic polymers and inorganic materials have been attracting attention for the purpose of the creation of high-performance or high-functional polymeric materials. Especially, the word of "polymer nanohybrid materials" claims the blends of organic and inorganic components at nano-level dispersion. By using this idea, he demonstrated the importance of the design of specific interactions between organic polymers and inorganic matrix. The precise design of such interactions made possible to produce molecular level hybrid materials. Such examples include hydrogen bonding, π-π interaction, ionic interaction, charge-transfer complex formation, hydrophobic interaction, CH-π interaction, CH-halogen interaction, stereo-complex formation, crystalline phase formation, and metal-ligand coordination. These hybrid materials exhibit an enhancement of mechanical strength and thermal stability of organic polymers and also high transparency.

Special Issue: Nanocomposites of Polymers and Inorganic Particles 2016

The extraordinarily large surface area on the nanoparticles presents diverse opportunities to place functional groups on the surface. Particles can be created that can expand/contract with changes in pH, or interact with anti-bodies in special ways to provide rapid ex-vivo medical diagnostic tests. Important extensions have been made in combining inorganic materials with polymers and in combining different classes of polymers together in nanoparticle form.

Synthesis and Function of Novel Organic-Inorganic …

Recommended Citation. Zhang, Honghu, "Bioinspired synthesis and self-assembly of hybrid organic–inorganic nanomaterials" (2016). Graduate Theses and Dissertations.

These hybrid materials of polymer and ceramics fabricated with NPs achieve both high thermal conductivity and easy thin film flexible fabrication, namely trade-off function.

Targeted Application(s)/Industry
For example, by the surface modification of BN particles by supercritical method, affinity of BN and polymers could be improved, so that high BN content of hybrid materials, thus high thermal conductivity materials, could be synthesized.

One of the important research topics in the synthesis of pharmaceuticals and fine chemicals is to convert homogeneous reactions to heterogeneous versions by immobilization of metal species on polymer or inorganic supports. The oxidation state of the metal species can affect the character and reactivity of the catalyst. Recently, chemists have gained excellent techniques to control particle size and oxidation state of metal species, which has led to the development of new heterogeneous catalysts for organic reactions.

Synthesis of Metal-Organic Frameworks (MOFs): Routes …

Synthesis and Function of Novel Organic-Inorganic Hybrid Conjugated Polymers Using Characteristic Properties of Heteroatoms

polymers having a unique structure, which is difficult to construct by conventional structures. During the past decade, these synthetic obstacles have been overcome through many creative procedures. Organic conjugated polymers are of much current academic and technological interest due to their optical and electronic properties. Various types of main group element-containing conjugated polymers have been synthesized using silicon, nitrogen, and sulfur. This review focuses on recent development of the main group element-containing conjugated polymers, such as conjugated organo-boron, silicon, germanium, -tin, -phosphorus, and -arsenic polymers. Synopsis Polymers containing inorganic elements in the main chain structure are of current interest as a result of their unique properties. The development of a new polymerization reaction makes it possible to create organic-inorganic hybrid.

polymers having a unique structure, which is difficult to construct by conventional structures. During the past decade, these synthetic obstacles have been overcome through many creative procedures. Organic conjugated polymers are of much current academic and technological interest due to their optical and electronic properties. Various types of main group element-containing conjugated polymers have been synthesized using silicon, nitrogen, and sulfur. This review focuses on recent development of the main group element-containing conjugated polymers, such as conjugated organo-boron, silicon, germanium, -tin, -phosphorus, and -arsenic polymers. Synopsis Polymers containing inorganic elements in the main chain structure are of current interest as a result of their unique properties. The development of a new polymerization reaction makes it possible to create organic-inorganic hybrid.

Syntheses and Structures of Three Organic–Inorganic Hybrids with Different 2D Structural Types Constructed from Rare Earth Polymers and …
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CHEMISTRY - University of Washington

A Combined Polymerization Conden¬sa¬tion Process – a Nontraditional Method of Synthesis of Silicon-organic Polymers with Inorganic and Organo-Inorganic Main Chains of Macromolecules
2.1.1.

Inorganic and Nano-Metal Chemistry: Vol 47, No 12

7. New Polymeric Materials Based on Element-Blocks
It should be pointed out that Professor Chujo prepared new polymers having various types of inorganic elements or their blocks in the main chain. Such examples are consisting of the elements of B, Al, Ga, In, Si, Ge, P, As, Sb, Bi, S, Se, and others. Most of these polymers are the first examples of such elements-containing mainchain-type ones, and he proposed a new idea of "Element-Blocks". These polymers are strongly expected to show unique and interesting properties as new optic, electronic, magnetic and biomedical materials. For the preparation of these new materials, he discovered new polymerization methods. This would be very important point to explore the new chemistry for the functional materials.

Zinc Oxide—From Synthesis to Application: A Review - MDPI

The impact of Professor Chujo's work is manifested in the discovery of new organic-inorganic hybrid materials at the molecular level. These hybrid materials show very unique optical and electrical properties. Under this line, he has just started the national project (Scientific Research on Innovative Areas) in Japan titled "New Polymeric Materials Based on Element-Blocks".

Chemistry and Biochemistry Courses

N2 - The preparation and the optical properties of lanthanum fluoride (LaF3) nanoparticles doped with erbium and neodymium will be discussed. Organic and inorganic materials in the form of polymers and sol-gels were used to serve as the hosts for the inorganic nanoparticles, respectively. The organic host material has been synthesized such that it is photo-crosslinkable to facilitate straightforward multimode and monomode waveguide fabrication. Our focus will be on the optical properties of both the inorganic rare-earth doped nanoparticles and the host materials. The importance of the refractive indices of the particles and the host material and particle size on the optical scattering properties will be addressed. The optical transmission windows of the host materials do overlap with the absorption peaks of the erbium and neodymium in order to have efficient optical pumping, as well as with the spontaneous emission spectra of the rare earth metals for use as optical amplifiers around 1330nm and 1550nm. Furthermore, the improvement on the excited state lifetimes of the rare earths in the nanoparticles compared to the lifetimes of rare earths directly immersed in sol-gels will be presented.

Nanocomposites: synthesis, structure, properties and …

AB - The preparation and the optical properties of lanthanum fluoride (LaF3) nanoparticles doped with erbium and neodymium will be discussed. Organic and inorganic materials in the form of polymers and sol-gels were used to serve as the hosts for the inorganic nanoparticles, respectively. The organic host material has been synthesized such that it is photo-crosslinkable to facilitate straightforward multimode and monomode waveguide fabrication. Our focus will be on the optical properties of both the inorganic rare-earth doped nanoparticles and the host materials. The importance of the refractive indices of the particles and the host material and particle size on the optical scattering properties will be addressed. The optical transmission windows of the host materials do overlap with the absorption peaks of the erbium and neodymium in order to have efficient optical pumping, as well as with the spontaneous emission spectra of the rare earth metals for use as optical amplifiers around 1330nm and 1550nm. Furthermore, the improvement on the excited state lifetimes of the rare earths in the nanoparticles compared to the lifetimes of rare earths directly immersed in sol-gels will be presented.

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