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STUDIES ON THE polysilane CONSISTING CYCLODISILAZANE UNITS IN THE MAIN CHAIN

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Chinese Journal of Polymer Science 1989年第1期7卷 31-37页

作者：杜作栋陈剑华韩同珍 Department of Chemistry Shandong University

Since the reactivity of Me_2SiCl_2(Ⅰ) and ■(Ⅱ) are very different. it is difficult to cocondensate the above two monomers with sodium in general Wurtz reaction. We have proposed a modified method to prepare copolymer containing permethylpolysilane segments and cyclodisilazane units by reaction of (Ⅱ)with Na at first, then adding (Ⅰ) into the mixture to proceed with further reaction.The obtained copolysilanes are pale yellow elastic substance and soluble in common solvents. The amounts of N in the copolymers are influenced by the operating conditions of the synthetic method. The resultant products were characterized by IR, UV, NMR, and elementary analysis. The highest molecular weight determined by gel permeation chromatography is 60000.

关键词： Cyclodisilazane polysilane Polycarbosilanes

Helix Induction to polysilane Chain Upon Wrapping by Sugar Derivatives and Related Chemistry

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复旦学报（自然科学版） 2007年第5期46卷 618-619页

作者： M.Tanaka T.Sanji Nobu Kato Y.Sato Chemical Resources Laboratory Tokyo Institute of Technology 4259-R1-13 NagatsutaMidori-ku Yokohama 226-8503Japan

1 Results Helix induction to polymer chains is an active area of research these days. In most cases,optically-active units are attached to the polymers to induce helical conformation. Scheme 1Since the properties of σ-conjugated polymers like polysilanes are dependent on the conformation of the chain,it is particularly interesting to induce helix to oligo-and polysilanes. We have been working on the helix induction by host-guest complexation with sugar derivatives such as cyclodextrine and *** l...

关键词： polysilane inclusion complex helix supramolecular chemistry

Feature of polysilane (UV Light Sensitive Materials)Treated by O_2-plasma

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Semiconductor Photonics and Technology 1998年第4期4卷 235-237,242页

作者： XIEMaonong FUHejian 等 Dept.ofPhysics SichuanUniversityChengdu610064CHN Dept.ofChemistrySichuanUniversity Chengdu610064CH

From the analysis of infrared (IR) transmission spectrum, it was showed that the SiO x films were produced when polymethyl phenethyl silane (PMPES) was treated with O 2 plasma, where the x ranged from 1.5 to 2. This film has a positive flat band voltage on the curve of high frequency C V chart, its value is dependent on the condition of O 2 plasma treatment and the thickness of PMPES film.

关键词： Flat Band Voltage O 2 plasma polysilane

Effects of PBr<sub>3</sub>Addition to polysilane Thin Films on Structures and Photovoltaic Properties

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Green and Sustainable Chemistry 2017年第1期7卷 20-34页

作者： Junya Nakagawa Takeo Oku Atsushi Suzuki Tsuyoshi Akiyama Masahiro Yamada Sakiko Fukunishi Kazufumi Kohno Department of Materials Science The University of Shiga Prefecture Hikone Japan Osaka Gas Co. Ltd. Osaka Japan Osaka Gas Chemicals Co. Ltd. Osaka Japan

Organic thin film solar cells are potential next generation solar cells. Many p-type semiconductors have been used in organic solar cells, but there have been far fewer reports involving n-type organic semiconductors. Developing new n-type organic semiconductors is therefore desirable. polysilane thin films were spin-coated from solutions containing phosphorus (P), and the effects of P addition on film microstructures and electronic properties as n-type semiconductors were investigated. Microstructures of poly-methyl-phenyl-silane (PMPS), dimethyl-polysilane (DMPS) and deca-phenyl-penta-silane (DPPS) thin films were investigated by X-ray diffraction and transmission electron microscopy. PMPS thin films doped with P (PMPS(P)) were amorphous upon annealing at 300°C, while DMPS(P) and DPPS(P) thin films exhibited crystalline structures. PMPS(P) and DMPS(P) thin films exhibited decreased electrical resistances upon P doping. The energy gaps of PMPS(P), DMPS(P) and DPPS(P) were 3.5, 3.9 and 3.8 eV, respectively. Decreased photoluminescence intensities of PMPS, DMPS and DPPS were observed upon P doping. The desorption of phenyl and methyl groups from PMPS(P) thin films was observed from Raman scattering measurements. Solar cells containing polysilane(P)/poly[3-hexylthiophene] heterojunction structures were fabricated and exhibited photovoltaic behavior.

关键词： Microstructure Thin Film Property polysilane Solar Cell

Effects of polysilane-Coating on Interface of Electrofusion Joints for Maintaining Strength

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Materials Sciences and Applications 2015年第4期6卷 322-331页

作者： Hiroaki Murase Shinichi Kawasaki Toshimichi Kitaoka Jouji Furukawa Hirofumi Ueda Hiroyuki Nishimura Kazushi Yamada Osaka Gas Co. Ltd. Osaka Japan Advanced Fibro-Science Kyoto Institute of Technology Kyoto Japan

The fusion strength of electrofusion joints using the polyethylene (PE) pipe connection greatly depends on the amount of sand which adheres to the interface by wind and so on, because there is no flow of melted resin at the fusion interface on electrofusion joints. Therefore, it is necessary to develop a method to prevent the fusion strength from reducing even in the case of sand adhesion. In this study, the fusion interface coated with polysilane, a kind of silicon polymer, effectively prevented the reduction of the fusion strength even if contaminated by sand. It was found that it brought the improvement of the fusion strength since when there was polysilane on the fusion interface. PS deeply permeated the polyethylene layer and lowered the viscosity of polyethylene.

关键词： polysilane Electrofusion Joint

Microstructures and Photovoltaic Properties of polysilane/C<sub>60</sub>-Based Solar Cells

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Materials Sciences and Applications 2012年第8期3卷 557-561页

作者： Atsushi Kawashima Takeo Oku Atsushi Suzuki Kenji Kikuchi Shiomi Kikuchi Department of Materials Science The University of Shiga Prefecture Hikone Japan

polysilane/C60-based solar cells were fabricated and investigated. Two-types of devices with bulk heterojunction and heterojunction structures were examined and characterized. Addition of silicon-based polymer to the organic solar cells improved the conversion efficiency by wide optical absorption and high carrier mobility. Microstructures of the solar cells were investigated by using X-ray diffraction and transmission electron microscopy. Energy levels in the present solar cells were discussed.

关键词： Bulk Heterojunction polysilane Fullerene Microstructure

Fabrication of Perovskite-Type Photovoltaic Devices with polysilane Hole Transport Layers

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Materials Sciences and Applications 2017年第2期8卷 209-222页

作者： Yasuhiro Shirahata Takeo Oku Sakiko Fukunishi Kazufumi Kohno Department of Materials Science the University of Shiga Prefecture Shiga Japan Frontier Materials Laboratories Osaka Gas Chemicals Co. Ltd. Osaka Japan

Perovskite-type photovoltaic devices with polysilane hole transport layers were fabricated by a spin-coating method. In the present work, poly(methyl phenylsilane) (PMPS) and decaphenylcyclopentasilane (DPPS) were used as the hole transport layers. First, structural and optical properties of the PMPS and DPPS films were investigated, and the as-prepared PMPS and DPPS films were amorphous. Optical absorption spectra of the amorphous PMPS and DPPS showed some marked features due to the nature of polysilanes. Then, microstructures, optical and photovoltaic properties of the perovskite-type photovoltaic devices with polysilane hole transport layers were investigated. Current density-voltage characteristics and incident photon to current conversion efficiency of the photovoltaic devices with the polysilane layers showed different photovoltaic performance each other, attributed to molecular structures of the polysilanes and Si content in the present hole transport layers.

关键词： polysilane Hole Transport Layer Perovskite Photovoltaic Device

Study on the Reaction Rate of polysilane Formation by Electroreduction

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Study on the Reaction Rate of Polysilane Formation by Electr...

Synthesis of polysilanes Using Mg and Lewis Acid and the Consideration of This Reaction Mechanism

The 2nd International Conference on Asian-European Environmental Technology and Knowledge Transfer

作者： OH Wonchun Department of Advanced Materials ＆ Science Engineering Hanseo University

polysilanes were synthesized by electroreduction of different monomers such as CH3HSiCl2,PhSiCl3,CH3SiCl3 and（CH3）2SiCl2 with Mg electrodes under ultrasonic *** effects of monomers and additives on the reaction rate were *** of PhSiCl3 among the four monomers showed the highest *** additive,the percent of Si-Cl bonds remaining for CH3HSiCl2 were 29.5% when electricity reached 15.5% of theoretic ***,the percent of Si-Cl were 17.5%～29% when electricity arrived at 10% of theory value with *** efficiency of the additives（p-dibromobenzene（DBB）,naphthalene（NAPH） and anthracene（ANTH）） was also observed in the polymerization reaction.P-dibromobenzene was proved the most effective *** on the observations,possible mechanisms of the polymerization were proposed.

关键词： electrosynthesis reaction rate polysilane monomers additives

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Materials Sciences and Applications 2015年第6期6卷 576-590页

作者： Hiroaki Murase Masayuki Sugimoto Hiroyuki Nishimura Kazushi Yamada Osaka Gas Co. Ltd. Osaka Japan Advanced Fibro-Science Kyoto Institute of Technology Kyoto Japan

Reduction of dichlorosilanes with Mg metal in the presence of LiCl and Lewis acid such as FeCl2 or ZnCl2 was found to be the highly practical method for the synthesis of polysilanes (PS). This method is so useful and practical that PS can be prepared by stirring dichlorosilanes at room temperature. This method was successfully applied for the synthesis of various types of PS having a linear structure, a cyclic structure and silane-styrene copolymers as another type of PS. The structure of the reaction intermediates was also analyzed. At the initiation stage the results of FD-MS (Field desorption mass spectrometry) and GPC (Gel permeation chromatography) showed that linear oligomers were mainly formed by stepwise reactions, and then the high polymers and cyclic oligomers were formed in parallel.

关键词： polysilane Magnesium Lewis Acid Catalysts