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Investigations of inorganic and hybr...

Kam, Kinson Chihang.

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Investigations of inorganic and hybrid inorganic-organic nanostructures .

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Investigations of inorganic and hybrid inorganic-organic nanostructures ./
作者:	Kam, Kinson Chihang.
面頁冊數:	254 p.
附註:	Adviser: Anthony K. Cheetham.
Contained By:	Dissertation Abstracts International68-12B.
標題:	Chemistry, Inorganic. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3294750
ISBN:	9780549398202

Investigations of inorganic and hybrid inorganic-organic nanostructures .
Kam, Kinson Chihang.

Investigations of inorganic and hybrid inorganic-organic nanostructures . - 254 p.

Adviser: Anthony K. Cheetham.

Thesis (Ph.D.)--University of California, Santa Barbara, 2007.

This thesis focuses on the exploratory synthesis and characterization of inorganic and hybrid inorganic-organic nanomaterials. In particular, nanostructures of semiconducting nitrides and oxides, and hybrid systems of nanowire-polymer composites and framework materials, are investigated. These materials are characterized by a variety of techniques for structure, composition, morphology, surface area, optical properties, and electrical properties.

ISBN: 9780549398202Subjects--Topical Terms:

517253
Chemistry, Inorganic.

Investigations of inorganic and hybrid inorganic-organic nanostructures .
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035 $a (UMI)AAI3294750
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100 1 $a Kam, Kinson Chihang. $3 1279981
245 1 0 $a Investigations of inorganic and hybrid inorganic-organic nanostructures .
300 $a 254 p.
500 $a Adviser: Anthony K. Cheetham.
500 $a Source: Dissertation Abstracts International, Volume: 68-12, Section: B, page: 8020.
502 $a Thesis (Ph.D.)--University of California, Santa Barbara, 2007.
520 $a This thesis focuses on the exploratory synthesis and characterization of inorganic and hybrid inorganic-organic nanomaterials. In particular, nanostructures of semiconducting nitrides and oxides, and hybrid systems of nanowire-polymer composites and framework materials, are investigated. These materials are characterized by a variety of techniques for structure, composition, morphology, surface area, optical properties, and electrical properties.
520 $a In the study of inorganic nanomaterials, gallium nitride (GaN), indium oxide (In2O3), and vanadium dioxide (VO2) nanostructures were synthesized using different strategies and their physical properties were examined. GaN nanostructures were obtained from various synthetic routes. Solid-state ammonolysis of metastable gamma-Ga2O 3 nanoparticles was found to be particularly successful; they achieved high surface areas and photoluminescent study showed a blue shift in emission as a result of surface and size defects. Similarly, In2O3 nanostructures were obtained by carbon-assisted solid-state syntheses. The sub-oxidic species, which are generated via a self-catalyzed vapor-liquid-solid mechanism, resulted in 1D nanostructures including nanowires, nanotrees, and nanobouquets upon oxidation. On the other hand, hydrothermal methods were used to obtain VO2 nanorods. After post-thermal treatment, infrared spectroscopy demonstrated that these nanorods exhibit a thermochromic transition with temperature that is higher by &sim;10°C compared to the parent material. The thermochromic behavior indicated a semiconductor-to-metal transition associated with a structural transformation from monoclinic to rutile.
520 $a The hybrid systems, on the other hand, enabled their properties to be tunable. In nanowire-polymer composites, zinc oxide (ZnO) and silver (Ag) nanowires were synthesized and incorporated into polyaniline (PANI) and polypyrrole (PPy) via in-situ and ex-situ polymerization method. The electrical properties of these composites are significantly influenced by the nanowire-polymer ratios and chemical functionalization of the respective nanowires, up to an order of magnitude. In hybrid framework materials, nine novel phases of magnesium tartrate coordination polymers were synthesized by exploiting different analogs of tartaric acid, resulting in chiral and achiral frameworks. These phases exhibited a diverse range of structures as a result of connectivity, density, composition differences as a function of temperature. The chirality of some of these frameworks was also verified using circular dichroism.
590 $a School code: 0035.
650 4 $a Chemistry, Inorganic. $3 517253
650 4 $a Engineering, Materials Science. $3 1017759
690 $a 0488
690 $a 0794
710 2 $a University of California, Santa Barbara. $b Chemistry. $3 1029809
773 0 $t Dissertation Abstracts International $g 68-12B.
790 $a 0035
790 1 0 $a Bazan, Guillermo C. $e committee member
790 1 0 $a Cheetham, Anthony K., $e advisor
790 1 0 $a Hayton, Trevor W. $e committee member
790 1 0 $a Stucky, Galen D. $e committee member
791 $a Ph.D.
792 $a 2007
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3294750