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Química de materiais em 25 anos de SBQ

Rubira, Adley Forti; Zarbin, Aldo José Gorgatti; Galembeck, Fernando; Alves, Oswaldo Luiz; Jafelicci Júnior, Miguel
Fonte: Sociedade Brasileira de Química Publicador: Sociedade Brasileira de Química
Tipo: Artigo de Revista Científica Formato: 75-81
POR
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Communications on Chemistry of Materials topics were already presented in the first annual meetings of the Brazilian Chemical Society, dispersed throughout various meeting sections. The SBQ Materials Chemistry division was organized in 1993, attracting those members with an interest in the composition, structure and properties of materials, as related to their functions. This paper is an account of the development of Materials Chemistry research in Brazil, based on the SBQ annual meetings data.

Química de materiais em 25 anos de SBQ

Rubira,Adley Forti; Zarbin,Aldo José Gorgatti; Galembeck,Fernando; Alves,Oswaldo Luiz; Jafelicci Júnior,Miguel
Fonte: Sociedade Brasileira de Química Publicador: Sociedade Brasileira de Química
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/05/2002 PT
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47.441035%
Communications on Chemistry of Materials topics were already presented in the first annual meetings of the Brazilian Chemical Society, dispersed throughout various meeting sections. The SBQ Materials Chemistry division was organized in 1993, attracting those members with an interest in the composition, structure and properties of materials, as related to their functions. This paper is an account of the development of Materials Chemistry research in Brazil, based on the SBQ annual meetings data.

Química de (nano)materiais

Zarbin,Aldo J. G.
Fonte: Sociedade Brasileira de Química Publicador: Sociedade Brasileira de Química
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/12/2007 PT
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An overview of different aspects related to Materials and Nanomaterials Chemistry is presented and discussed. The insertion of this field in Brazil is evaluated on the basis of the communications presented on the 30th Annual Meeting of the Brazilian Chemical Society (SBQ). The importance of the Materials Chemistry Division of SBQ for the growth and consolidation of Materials Chemistry in Brazil is also discussed.

Calcifying tissue regeneration via biomimetic materials chemistry

Green, David W.; Goto, Tazuko K.; Kim, Kye-Seong; Jung, Han-Sung
Fonte: The Royal Society Publicador: The Royal Society
Tipo: Artigo de Revista Científica
Publicado em 06/12/2014 EN
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Materials chemistry is making a fundamental impact in regenerative sciences providing many platforms for tissue development. However, there is a surprising paucity of replacements that accurately mimic the structure and function of the structural fabric of tissues or promote faithful tissue reconstruction. Methodologies in biomimetic materials chemistry have shown promise in replicating morphologies, architectures and functional building blocks of acellular mineralized tissues dentine, enamel and bone or that can be used to fully regenerate them with integrated cell populations. Biomimetic materials chemistry encompasses the two processes of crystal formation and mineralization of crystals into inorganic formations on organic templates. This review will revisit the successes of biomimetics materials chemistry in regenerative medicine, including coccolithophore simulants able to promote in vivo bone formation. In-depth knowledge of biomineralization throughout evolution informs the biomimetic materials chemist of the most effective techniques for regenerative framework construction exemplified via exploitation of liquid crystals (LCs) and complex self-organizing media. Therefore, a new innovative direction would be to create chemical environments that perform reaction–diffusion exchanges as the basis for building complex biomimetic inorganic structures. This has evolved widely in biology...

Unusual molecular architectures in liquid crystal and polymer chemistry

Paraskos, Alexander John, 1969-
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 2 v. (333 leaves); 9440291 bytes; 9440092 bytes; application/pdf; application/pdf
ENG
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This dissertation details the synthesis and characterization of materials that consist of molecules with unusual shapes. We have pursued this goal into the regimes of both small molecules (liquid crystals) and polymeric materials. In both cases, the ultimate goal is the creation of materials that display unique properties that arise due to molecular organizations and/or interactions driven by the underlying shape of the molecules or subunits. Chapter One is an introduction to the study of liquid crystals and their phases. Chapter Two and Three both describe the synthesis and characterization of bent-core tetracatenar liquid crystals. The focus in Chapter Two is on the effects that changing the bend angle and/or lateral dipole have upon the phase behavior of these compounds. We found that the thiophene-based mesogens with the largest lateral dipoles display the most stable liquid crystalline phases. We believe that this effect is due to the formation of antiparallel dimers within the phases of these compounds. Chapter Three describes the synthesis and phase behavior of thiophene-based liquid crystals with desymmetrized cores. Reduction of the symmetry had the effect of either broadening or narrowing the resulting phases, depending on the types of endgroups attached to the molecular core. Chapter Four details the synthesis and phase-behavior of triphenylene-based dione liquid crystals. These molecules are roughly half-discs in terms of molecular shape...

Triptycenes as a molecular building block to introduce internal free volume in organic materials

Long, Timothy Michael, 1975-
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 317 p.; 15985831 bytes; 15985588 bytes; application/pdf; application/pdf
ENG
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Chapter 1. Triptycenes are shown to possess "internal free volume" swept out between their aromatic faces, which enable them to align their long axis normal to the host alignment to most efficiently fill this volume. This alignment is the opposite of that expected by conventional aspect ratio considerations alone. Anthracene chromophores were attached directly into the triptycene backbone and their polarized UV-Visible spectra were probed to determine their overall orientation. This alignment is guided by the minimization of the free volume of the system and works for both liquid crystalline and poly(vinyl chloride) hosts.; Chapter 2. Building from the principles learned in Chapter 1, a design for fluorescent and dichroic dyes is introduced to increase their alignment when dissolved in nematic liquid crystals and the mixture is aligned on a rubbed poly(imide) surface. A wide variety of dyes was synthesized to demonstrate the universality of the effect and exception to the rule, particularly azo dyes and pentiptycene containing materials, are addressed. Application of a fluorescent green dye towards a fluorescent security device is shown.; Chapter 3. The synthesis of a new class of nematic liquid crystals with triptycenes built into a bis(p-dialkoxyphenylethynyl)benzene mesogenic core is reported. Triptycenes are designed into the center or terminal ring of the mesogen...

Design of chemistry and morphology of polymer filtration membranes

Akthakul, Ariya, 1973-
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 174 p.; 10741204 bytes; 10741010 bytes; application/pdf; application/pdf
ENG
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To improve membrane materials in water filtration, which currently display broad pore size distribution, hydrophobic chemistry, and fouling behavior, a novel design of chemistry and morphology of membranes is employed. First, through fundamental studies of morphological formation both in bulk by lattice-Boltzmann (LB) simulation methods and at the surface by observation of electron micrographs, it is illustrated that phase separation via spinodal decomposition is responsible for pore development. This understanding suggests the possibility to tailor a uniform and interconnected porous membrane by using the spinodal structure. Considering that the control of spinodal porous structure on a nanoscale can be challenging, an alternative approach to achieve a similar interconnected morphology by utilizing the self-assembled structure of a graft copolymer is presented. This graft copolymer permits not only the design of morphology through its architecture, but also the design of chemistrythrough its chemical components. Here, a comb-type structure of a copolymer is applied; this structure contains a hydrophobic poly(vinylidene fluoride) (PVDF) backbone for structural integrity and hydrophilic poly(ethylene oxide) (PEO) side chains for preferential water transport. A membrane with the microphase-separated structure of this copolymer at the surface is then utilized to clean oily water wastes where the membrane rejects more than 99.9% of the oil without fouling. This membrane can also perform molecular sieving...

Materials with supramolecular chirality : liqid crystals and polymers for catalysis

Martin, Karen Villazor
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 176 leaves; 6673096 bytes; 6695328 bytes; application/pdf; application/pdf
ENG
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Mesomorphic organizations provide a powerful and efficient method for the preorganization of molecules to create synthetic materials with controlled supramolecular architectures. Incorporation of polymerizable groups within a liquid crystalline template can set the stage for the synthesis of anisotropic molecular networks. This dissertation details the synthesis and characterization of chiral liquid crystals and crosslinked polymer networks, with an eye toward applications in asymmetric catalysis. Chapter One gives an introduction to the study of liquid crystals and their phases. Chapters Two and Three describe the incorporation of terminal olefins as polymerizable groups within a columnar liquid crystalline template as an effective method for the synthesis of robust, anisotropic polymeric materials. Upon in situ acyclic diene metathesis (ADMET) polymerization, the original mesophase order is retained. Chapter Two involves the room temperature polymerization of iron(III) tris(diketonate) liquid crystals, resulting in densely crosslinked materials. The focus of Chapter Three is the polymerization of dioxomolydenum-based liquid crystals, performed at high temperature, and their potential to serve as catalysts for asymmetric epoxidation. In Chapter Four...

Generation of ultrahigh frequency acoustic waves for the characterization of complex materials

Choi, Jaime Dawn, 1976-
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 207 p.; 11068156 bytes; 11094729 bytes; application/pdf; application/pdf
ENG
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A discussion of the anomalous low-temperature thermal properties of amorphous materials is first given as a theoretical framework in which the rest of the thesis is treated. The theory models the form and function of microscopic dynamical and structural features that are thought to be common to amorphous materials, which interact strongly with ultrahigh frequency acoustic waves and creating the anomalies. The model has been found to well reproduce the measured anomalous thermal conductivity of silica glass. Separately, an experiment which utilizes impulsive stimulated thermal scattering is used to measure the anomalous low-temperature thermal conductivity of a molecular glass, glycerol. The results, taken in the context of the aforementioned theory, illustrate the ambiguity of using a macroscopic measurement to quantify microscopic parameters. However the validity of the microscopic assumptions of the theory has heretofore been difficult to test directly due to a lack of a proper experimental method. The remainder of the thesis is devoted to developing a technique of generating ultrahigh frequency acoustic waves, which can be used to directly probe the dynamics and structure believed to dominate the low-temperature thermal properties of amorphous materials. The generation of ultrahigh frequency tunable narrowband acoustic waves is accomplished with a novel retroreflection-based ultrafast pulse shaper. It generates optical pulse sequences of frequency tunable between 2-2000 GHz through movement of a single delay line. Optical to acoustic conversion by aluminum transducers yields acoustic waves with bandwidth limited by the metal temporal response to 2- 500 GHz. The detection of the ultrahigh frequency acoustic waves is accomplished with a novel grating-based interferometer.; (cont.) The alignment...

Biological scaffolds for the peptide-directed assembly of nanoscale materials and devices

Solis, Daniel J., 1978-
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 108 leaves
ENG
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The utilization of biological factors in the design, synthesis and fabrication of nano-scaled materials and devices presents novel, large scale solutions for the realization of future technologies. In particular, we have genetically modified the M13 Filamentous Bacteriophage for its use as a biological scaffold in the peptide-controlled nucleation and patterning of nanoscale semiconducting and magnetic materials. Through evolutionary phage display screening of inorganic substrates, functional peptides that influence material properties such as size, phase and composition during nucleation have been identified. The incorporation of these specific, nucleating peptides into the generic scaffold of the M13 coat structure provides a viable linear template for the directed synthesis of semiconducting and magnetic nanowires. Through further modification of the remaining proteins on the virus scaffold, other functionalities can be incorporated such as the directed patterning of the virus/nanowires assemblies into nanoscaled devices with tunable properties as determined by the genetic information carried within the virus scaffold. Multi-functional viruses provide a truly self assembled system for the design and execution of a myriad of nanoscaled devices in a green...

Protein crystals as templates for materials chemistry

Turner, Mary Ellen
Fonte: Universidade Rice Publicador: Universidade Rice
ENG
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This work describes the first use of macromolecular biological crystals as templates for materials synthesis. The macromolecular crystal itself offers unique micro- and mesoporous structure with specific binding sites for molecules. This work utilizes this porous structure for the design of polymer and metal loaded nanocomposites. The crystals are first strengthened with intermolecular covalent cross-links. The sturdy crystals then serve as scaffolds for the infusion of polymers or the growth of metallic nanoparticles. Polymer infused and encased Hen Egg White Lysozyme (HEWL) crystals show reproducible diffraction for many months to a resolution of 4A. Metal nanoparticles can be grown in HEWL crystals using an electroless plating technique in which palladium ions bound to amino acids are subsequently reduced and form a catalytic surface for the deposition of platinum metal. If these nanoparticles are grown in a macromolecular crystal with larger pores, such as Cowpea Mosaic Virus, then the protein structure effectively guides the growth of the nanoparticles resulting in monolithic, highly ordered nanocomposites. These novel patterned materials could find use as x-ray optics, sensors, or x-ray diffraction standards.

The design, synthesis and characterization of new building blocks for the preparation of molecule-based magnetic materials /

Wang, Jian.
Fonte: Brock University Publicador: Brock University
Tipo: Electronic Thesis or Dissertation
ENG
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Two new families of building blocks have been prepared and fully characterized and their coordination chemistry exploited for the preparation of molecule-based magnetic materials. The first class of compounds were prepared by exploiting the chemistry of 3,3'-diamino-2,2'-bipyridine together with 2-pyridine carbonyl chloride or 2-pyridine aldehyde. Two new ligands, 2,2'-bipyridine-3,3'-[2-pyridinecarboxamide] (Li, 2.3) and N'-6/s(2-pyridylmethyl) [2,2'bipyridine]-3,3'-diimine (L2, 2.7), were prepared and characterized. For ligand L4, two copper(II) coordination compounds were isolated with stoichiometrics [Cu2(Li)(hfac)2] (2.4) and [Cu(Li)Cl2] (2.5). The molecular structures of both complexes were determined by X-ray crystallography. In both complexes the ligand is in the dianionic form and coordinates the divalent Cu(II) ions via one amido and two pyridine nitrogen donor atoms. In (2.4), the coordination geometry around both Cu11 ions is best described as distorted trigonal bipyramidal where the remaining two coordination sites are satisfied by hfac counterions. In (2.5), both Cu(II) ions adopt a (4+1) distorted square pyramidal geometry. One copper forms a longer apical bond to an adjacent carbonyl oxygen atom, whereas the second copper is chelated to a neighboring Cu-Cl chloride ion to afford chloride bridged linear [Cu2(Li)Cl2]2 tetramers that run along the c-axis of the unit cell. The magnetic susceptibility data for (2.4) reveal the occurrence of weak antiferromagnetic interactions between the copper(II) ions. In contrast...

Molecular Magnetism: The Design, Synthesis, and Characterization of New Building Blocks for Molecule-based Magnetic Materials

Hurley, Nicholas J.
Fonte: Brock University Publicador: Brock University
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Two classes of building blocks have been prepared and characterized and their coordination chemistry explored working towards the preparation of new molecule-based magnetic materials. In the first project, the amine functionality of 3,3'-diamino-2,2'- bipyridine was exploited for the preparation of a new family of ligands (H2L 1)-(H2L 4). The molecular structures of three ligands have been fully characterized by X-ray crystallography. [molecular structure diagram will not copy here, but is available in full pdf.] The coordination chemistry of these ligands with divalent first row transition metal ions was investigated. For ligand (H2L1), the molecular structures of four coordination complexes with stoichiometries [Zn2(Ll)(OAc)(MeO)]2 (I), [Cu2(L1)(OAc)2 (II), [Li(L1)]3 (III), and [Ni(L1)]3 (IV) were determined by X-ray crystallography. For ligand (H2L2), a Cu(II) complex of stoichiometry [Cu3(L2)(OAc)3MeO] (V) was determined by X-ray crystallography. The magnetic properties of complexes (II), (III), and (V) have been fully elucidated. In project two, synthetic strategies for the preparation of porphyrin molecules bearing triol substituents is presented. Following this approach, three new porphyrin derivatives have been prepared and characterized [Zn(HPTPP-CH2C(CH20H)3)] (VI)...

PERIODIC MESOPOROUS ORGANOSILICA: PREPARATION CHARACTERIZATION AND APPLICATIONS OF NOVEL MATERIALS

DICKSON, STEVEN E
Fonte: Quens University Publicador: Quens University
Tipo: Tese de Doutorado
EN; EN
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There is currently a great interest in the field of porous organosilica materials because of the high surface areas (> 1000 m²/g) and narrow pore size distributions which are beneficial for applications such as chromatography, chiral catalysis, sensing or selective adsorption. Periodic mesoporous organosilicas (PMOs) represent an interesting class of hybrid silica materials because of the wide variety of bridging organic groups which can be incorporated within the precursors [(OR)3Si-R-Si(OR)3] giving rise to materials with exceptional properties. We have synthesized and characterized various aromatic PMOs composed of supporting structural monomers (phenylene- or biphenylenebridged) and functional stilbene monomers (cis and trans) (1, 2). The effect of the different synthetic procedures and varying amounts of functional stilbene monomer on the properties of the materials was examined. The functional transstilbene component was determined to be well distributed in a phenylene-bridged PMO using P123 as a pore template from TEM techniques with Os staining. The trans-stilbene linkers were completely transformed to aryl aldehydes through ozonolysis with dimethylsulfide workup. Further transformation of the carbonyl functionality to an aryl imine showed a moderate level of success. Enantiomeric forms of a novel...

Iridium(III)-surfactant complex immobilized in mesoporous silica via templated synthesis: a new route to optical materials

BOTELHO, Moema de Barros e Silva; FERNANDEZ-HERNANDEZ, Jesus Miguel; QUEIROZ, Thiago Branquinho de; ECKERT, Hellmut; COLA, Luisa De; CAMARGO, Andrea Simone Stucchi de
Fonte: ROYAL SOC CHEMISTRY Publicador: ROYAL SOC CHEMISTRY
Tipo: Artigo de Revista Científica
ENG
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In this work we report the preparation of a new blue-emitting material based on the templated synthesis of mesoporous silica (MCM-41) using micellar solutions of the newly synthesized monocationic metallosurfactant complex bis[1-benzyl-4-(2,4-difluorophenyl)-1H-1,2,3-triazole](4,4'-diheptadecyl-2,2'- bipyridine)-iridium(III) chloride in hexadecyl-trimethyl-ammonium bromide (CTAB). Under ambient conditions, significant increases in excited state lifetime and quantum yield values (up to 45%), were obtained for the solid materials in comparison to the corresponding micellar solutions. Solid state (1)H and (19)F NMR spectroscopies were successfully employed for quantifying the luminophore content in terms of Ir-surfactant to CTAB and Ir-surfactant to silica ratios.; FAPESP; Alexander von Humboldt Foundation (Germany); CNPq; Fundacion Seneca Region de Murcia

Molecules and materials for the optical detection of explosives and toxic chemicals

Thomas, Samuel William, III
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 268 p.
ENG
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Optical chemosensing, especially using amplifying fluorescent polymers, can allow for the highly sensitive and selective vapor-phase detection of both explosives and highly toxic chemicals, including chemical warfare agents. There are varieties of analyte targets, however, that remain challenging for detection by these methods. Research towards improving this technology has obvious implications for homeland security and soldier survivability. This dissertation details the development of new molecules, materials, and transduction schemes aimed at improving both the versatility and sensitivity of optical chemical detection. Chapter One provides an introduction to the field of fluorescent polymer sensors, principally focusing on their utility in the detection of nitroaromatic explosives. Brief descriptions of other analytical methods used for explosives detection are also included. Chapter Two describes the synthesis and optical properties of a new class of conjugated polymers that contain alkyl-amino groups directly bound to the arene rings of poly(phenylene ethynylene)s and poly(fluorene)s. These materials displayed red-shifted absorption and emission spectra, large Stokes Shifts, as well as long excited state lifetimes.; (cont.) Also described is the use of films of these readily oxidized polymers in the vapor-phase detection of hydrazine down to a concentration of 100 parts-per-billion. This new scheme for the detection of hydrazine vapor relies on the analyte's reduction of oxidized traps ("unquenching") within the polymer film to give a fluorescence "turn-on" signal. Chapter Three begins with an introduction to the various classes of explosive molecules...

The synthesis of inorganic semiconductor nanocrystalline materials for the purpose of creating hybrid organic/inorganic light-emitting devices; Synthesis of inorganic semiconductor NC materials for the purpose of creating hybrid organic/inorganic LEDs

Steckel, Jonathan S. (Jonathan Stephen)
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 213 p.
ENG
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Colloidal semiconductor nanocrystals (NCs) or quantum dots (QDs) can be synthesized to efficiently emit light from the ultraviolet, across the entire visible spectrum, and into the near infrared. This is now possible due to the continual development of new core and core-shell NC structures to meet specific color needs in areas as diverse as optoelectronic devices to biological imaging. Core-shell semiconductor NCs are unique light emitters. They are more stable overtime to photobleaching compared to organic dyes. Their emission is efficient and their spectral full width at half maximum remains highly narrow as their size is synthetically changed to provide desired peak wavelengths of emission to within plus or minus a couple of nanometers. They can be purified and manipulated in solution and their chemical interaction with the environment is the same for all sizes and can be modified using chemical techniques. These unique properties make semiconductor NCs ideal for use in light emitting devices (QD-LEDs). This work shows how electroluminescence can be extended into the near infrared region of the spectrum by employing infrared emitting NCs as well as into the blue region of the spectrum by designing and synthesizing NCs specifically for this application.; (cont.) Once efficient and color saturated electroluminescence at the visible spectrum's extremes had been realized it was a natural extension to begin exploring the potential of QD-LED devices to satisfy the technological requirements of flat panel displays and imaging applications. This led to the synthesis of a new green-emitting core-shell NC material to meet the specific color needs for flat panel display applications. At the same time we developed a new QD-LED device fabrication method to allow the patterning of the NC monolayer in our devices. Micro-contact printing the NC monolayer instead of using phase separation provided efficient and highly color saturated QD--LEDs in the red...

Polar octahedral rotations: a path to new multifunctional materials

Benedek, Nicole A.; Mulder, Andrew T.; Fennie, Craig J.
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
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Perovskite ABO$_3$ oxides display an amazing variety of phenomena that can be altered by subtle changes in the chemistry and internal structure, making them a favorite class of materials to explore the rational design of novel properties. Here we highlight a recent advance in which rotations of the BO$_6$ octahedra give rise to a novel form of ferroelectricity -- hybrid improper ferroelectricity. Octahedral rotations also strongly influence other structural, magnetic, orbital, and electronic degrees of freedom in perovskites and related materials. Octahedral rotation-driven ferroelectricity consequently has the potential to robustly control emergent phenomena with an applied electric field. The concept of `functional' octahedral rotations is introduced and the challenges for materials chemistry and the possibilities for new rotation-driven phenomena in multifunctional materials are explored.; Comment: Accepted for publication in Journal of Solid State Chemistry special issue on Polar Inorganic Materials

Crystal Structure and Chemistry of Topological Insulators

Cava, R. J.; Ji, Huiwen; Fuccillo, M. K.; Gibson, Q. D.; Hor, Y. S.
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Publicado em 05/02/2013
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Topological surface states, a new kind of electronic state of matter, have recently been observed on the cleaved surfaces of crystals of a handful of small band gap semiconductors. The underlying chemical factors that enable these states are crystal symmetry, the presence of strong spin orbit coupling, and an inversion of the energies of the bulk electronic states that normally contribute to the valence and conduction bands. The goals of this review are to briefly introduce the physics of topological insulators to a chemical audience and to describe the chemistry, defect chemistry, and crystal structures of the compounds in this emergent field.; Comment: Submitted to Journal of Materials Chemistry, 47 double spaced pages, 9 figures

Hybrid materials. Functional properties. From Maya Blue to 21st century materials

Gómez-Romero, P.; Sánchez, Clément
Fonte: Royal Society of Chemistry (Great Britain) Publicador: Royal Society of Chemistry (Great Britain)
Tipo: Artículo Formato: 808619 bytes; application/pdf
ENG
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The field of hybrid organic-inorganic materials has reached a stage of ripeness that is beginning to make possible extraordinary new developments. On the one hand the field has witnessed a trend towards the design of functionality in hybrids materials, while broadening spectacularly the variety of hybrid combinations explored. On the other hand, improved understanding and control of the chemistry, processing and microstructure of these versatile nanocomposite systems announce a new landscape of opportunities in dealing with increasingly complex chemistries and materials.; Peer reviewed