京都大学 / 0048 / 新制・課程博士 / 博士(農学) / 甲第18599号 / 農博第2086号 / 新制||農||1027(附属図書館) / 学位論文||H26||N4874(農学部図書室) / 31499 / 京都大学大学院農学研究科応用生命科学専攻 / (主査)教授 三上 文三, 教授 植田 充美, 教授 栗原 達夫 / 学位規則第4条第1項該当 / Doctor of Agricultural Science / Kyoto University / DFAM

京都大学 / 0048 / 新制・課程博士 / 博士(人間・環境学) / 甲第19817号 / 人博第788号 / 新制||人||189(附属図書館) / 27||人博||788(吉田南総合図書館) / 32853 / 京都大学大学院人間・環境学研究科相関環境学専攻 / (主査)教授 内本 喜晴, 教授 田部 勢津久, 教授 吉田 寿雄 / 学位規則第4条第1項該当 / Doctor of Human and Environmental Studies / Kyoto University / DFAM

京都大学 / 0048 / 新制・課程博士 / 博士(農学) / 甲第19936号 / 農博第2186号 / 新制||農||1044(附属図書館) / 学位論文||H28||N5009(農学部図書室) / 33022 / 京都大学大学院農学研究科森林科学専攻 / (主査)教授 木村 恒久, 教授 西尾 嘉之, 教授 髙野 俊幸 / 学位規則第4条第1項該当 / Doctor of Agricultural Science / Kyoto University / DGAM

京都大学 / 0048 / 新制・課程博士 / 博士(理学) / 甲第20201号 / 理博第4286号 / 新制||理||1616(附属図書館) / 京都大学大学院理学研究科化学専攻 / (主査)教授 北川 宏, 教授 竹腰 清乃理, 教授 島川 祐一 / 学位規則第4条第1項該当 / Doctor of Science / Kyoto University / DGAM

京都大学 / 0048 / 新制・課程博士 / 博士(エネルギー科学) / 甲第21885号 / エネ博第386号 / 新制||エネ||75(附属図書館) / 京都大学大学院エネルギー科学研究科エネルギー基礎科学専攻 / (主査)教授 片平 正人, 教授 森井 孝, 教授 木下 正弘 / 学位規則第4条第1項該当 / Doctor of Energy Science / Kyoto University / DGAM

No description available.

Mono- and dinuclear chromiumtricarbonyl and manganesetricarbonyl complexes of dibenzo[a,e]cyclooctatetraene (DBCOT) were synthesized and characterized. In the bis(chromiumtricarbonyl)DBCOT synthesis, the main product was the syn,anti isomer where the two Cr(CO)3 moieties coordinate to opposite faces of the DBCOT backbone. This complex exhibits three dynamic processes in solution. A ring inversion of the organic skeleton occurs while the two chromiumtricarbonyl moieties undergo tripod rotation. This is the first study where eight-membered ring inversion is studied for a pi-coordinated metallic system. The rate of inversion at various temperatures was determined by 1H NMR line shape analysis at two different field strengths (300 and 600 MHz). Compared with other cyclooctatetraene compounds reported, there is a large positive entropy of activation and a relatively high enthalpy of activation in this system. DFT calculations, using the B3LYP/6-31G** basis set, were performed to gain a better understanding of the experimental results. It is proposed that free rotation of both Cr(CO)3 groups in the planar transition state are responsible for the large entropy of activation for ring inversion in hexahapto,hexahapto-dibenzo[a,e]cyclooctatetraene-syn,anti-bis(tricarbonylchromium). The relatively large enthalpy of activation is due to a stabilizing interaction between the endo carbonyl groups on the syn-Cr(CO)3 and the remote arene. In the monometallic DBCOT complexes, the metal can either be inside or outside the tub conformation. Interestingly, the crystal structures show opposite orientations for the isoelectronic chromium and manganese systems. The Cr(CO)3 group is positioned anti relative to the DBCOT backbone while the Mn(CO)3+ is syn. It should be noted that the optimized gas phase geometries obtained through DFT calculations agree with the crystallographic results. Electrochemical studies were performed to investigate the change in redox behavior associated with coordination of mono and bis-chromium units to the DBCOT backbone. Four new organometallic crystal structures are reported in this dissertation. Different tripod orientations, DBCOT backbone angles, and metal orientation relative to the interior of the organic skeleton are found. C-H...O, C-H...pi, and charge assisted C-H...F hydrogen bonding interactions were observed in the solid state packing. The structural motifs found suggest these complexes could serve as organometallic synthons in supramolecular chemistry.

CdTe and ZnTe are common semiconductors, currently used in a wide variety of applications. Heterostructures, composed of two or more layered materials, create further potential for the use of these semiconductors in the development of new technologies. In this thesis, the epitaxial growth of CdTe/ZnTe thin films and heterostructures are studied with the intention of better understanding the mechanisms by which they grow and how their overall structure and properties may be modified. Single-layer, bilayer, and multilayer structures were grown by pulsed laser deposition on sapphire substrates. The resulting crystal structure, interface, and optical properties were characterized using X-ray diffraction, UV-Vis spectroscopy, atomic force microscopy, and electron microscopy and spectroscopy techniques. It was found that the growth conditions have a direct impact on the crystal quality of these materials, that can be understood in terms of the growth dynamics and film-substrate interactions. Domain formation was also found to vary between CdTe and ZnTe depositions, revealing important information about their growth. This work presents methods of consistently producing high quality CdTe and ZnTe thin films and bilayers, and insight into how this may be applied to the growth of multilayer films. / Thesis / Master of Science (MSc)

京都大学 / 新制・課程博士 / 博士(工学) / 甲第24581号 / 工博第5087号 / 新制||工||1974(附属図書館) / 京都大学大学院工学研究科材料工学専攻 / (主査)教授 田中 功, 教授 安田 秀幸, 教授 中村 裕之 / 学位規則第4条第1項該当 / Doctor of Philosophy (Engineering) / Kyoto University / DFAM

No description available.