日時：平成30年3月19日（月）15時30分～17時00分
場所：工学研究科 1号館 4階 144講義室

講師：Stefan Hecht教授（Humboldt-Universität zu Berlin（ドイツ））
（VBL客員教授）

題目：Controlling and Driving Molecular Processes with Light

要旨： Controlling molecular building blocks and their organization into nanostructured materials with specific functions constitutes the basis of modern bottom-up materials science. Using an external light stimulus to control such advanced materials in a dynamic fashion with superior spatial and temporal resolution offer tremendous opportunities and is at the heart of our group’s research program. This presentation will highlight some recent examples from our laboratory in which carefully designed photoswitches with improved performance have been exploited to remote-control materials, specifically, some of our recent efforts to optimize various photoswitches, such as azobenzenes, diarylethenes, acylhydrazones, and indigos with regard to their switching characteristics and the use of these optimized photochromic building blocks to control dynamic polymeric materials as well as charge transport in optoelectronic devices and to drive optomechanical transduction.

References：
Nat. Chem. 2012, 4, 675; Nat. Commun. 2015, 6, 6330; Nat. Nanotech. 2016, 11, 769; Nat. Commun. 2016, 7, 11975.


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問い合わせ先：
名古屋大学　大学院工学研究科　有機・高分子化学専攻
八島栄次
Tel: 052-789-4495, Fax: 052-789-3185
E-mail: yashima[at]chembio.nagoya-u.ac.jp

日時：平成29年12月14日（木）11時00分～12時00分
場所：名古屋大学　理農館SA321号室

講師：講師：Nikolay A. Semenov 上級研究員
（Novosibirsk Institute of Organic Chemistry（ロシア））
（VBL外国人客員教員）

題目：1,2,5-Chalcogenadiazoles as effective electron acceptors: reduction into Radical-anions vs. formation of charge transfer complexes
要旨：： 1,2,5-chalcogenadiazoles are of particular interest to the fundamental chemistry and its applications in materials science and biomedicine. The common property of heterocycles of this family is high positive electron affinity, which means these compounds are effective electron density acceptors. Chemical reduction (complete charge transfer) of the neutral 1,2,5-chalcogenadiazoles derivatives with various reducing agents yields thermodynamically stable Radial-Anions (RA), isolated in the form of thermally-stable salts. These RAs may be considered as promising building blocks for the synthesis of molecular based magnetic materials. Meanwhile, interaction with other electron donors such as TTF or certain anions (X–) results in formation of neutral or anionic charge transfer complexes (partial charge transfer). The former shows some potential for the photovoltaic applications. The latter are formed via coordination of X– to the chalcogen atom of heterocycle which leads to the changes in absorption spectra. This may be useful for the anion receptors/sensors applications. This talk will cover these two aspects of the redox reactivity of 1,2,5-chalcogenadiazoles with regards to their application.

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問い合わせ先：
名古屋大学　大学院理学研究科　物質理学専攻
阿波賀邦夫
Tel: 052-789-2487, Fax: 052-789-2484
E-mail: awaga[at]mbox.chem.nagoya-u.ac.jp

日時：平成29年11月17日（金）15時30分～17時00分
場所：知の拠点あいち あいちシンクロトロン光センター2階小会議室

15:30～16:15
“Growth and properties of nanosized YIG/GGG(111) heterostructures for magnonic applications”
講師：N. Sokolov (VBL招聘研究員, ヨッフェ物理工学研究所研究グループ長/教授(ロシア)) (VBL Invited Researcher, Head of Research Group/Professor,
A.F.Ioffe Physical-Technical Institute, RAS)

16:15～17:00
“Correlation between structural and magnetic properties of magnetically hard ε-Fe2O3 epitaxial layers on GaN”
講師：S. Suturin (VBL招聘研究員, ヨッフェ物理工学研究所 シニア研究員(ロシア)) (VBL Invited Researcher, Senior Researcher,
A.F.Ioffe Physical-Technical Institute, RAS)
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問い合わせ先：
名古屋大学シンクロトロン光研究センター
田渕 雅夫
Tel: 5430 (内線)
E-mail: m.tabuchi[at]nusr.nagoya-u.jp

日時：平成29年9月25日（月）11時00分～12時00分
場所：名古屋大学VBL 3階ミーティングルーム
講師：Siti Machmudah特任准教授（VBL外国人客員教員, スラバヤ工科大学／ITS Surabaya（インドネシア））

題目：Hydrothermal and Solvothermal Synthesis for Composite Nanomaterials Preparation
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Abstract:
Nanocomposites have attracted a huge amount of interest due to their improved mechanical properties, dimensional stability, thermal/chemical stability, and electrical conductivity. Nanostructures are found to be of great significance because of their inherent properties such as large surface area to volume ratio and the engineered properties such as porosity, stability, and permeability. Composite material can achieve multifunctionality by combining the relevant, desirable features of different materials to form a new material having a broad spectrum of desired properties. Composite nanomaterials have been prepared by several techniques including sol-gel, precipitation, spray pyrolysis, hydrothermal, and solvothermal. In this presentation, hydrothermal and solvothermal techniques will be performed for preparation of CeO2-ZrO2 and ZnO-SiO2 nanocomposites because these techniques require simple equipment and easily controlled particle size and morphology by varying the synthesis conditions. The fabricated CeO2-ZrO2 nanocomposites with certain compositions could enhance their chemical and thermal properties to be used as electrolyte of Solid Oxide Fuel Cells. ZnO-SiO2 nanocomposites fabricated by solvothermal synthesis increased their chemical and optical properties for energy saving.
問い合わせ先：
名古屋大学大学院工学研究科　物質プロセス工学専攻
後藤元信
Tel: 052-789-3392
E-mail: goto.motonobu[at]material.nagoya-u.ac.jp

日時：平成29年7月31日（月）13時00分～14時30分
場所：名古屋大学VBL 3階ミーティングルーム室
講師：Rodolfo Morales Ibarra特任准教授 (VBL外国人客員教員、Universidad Autónoma de Nuevo León（メキシコ）)

題目：Recycling of Thermoset Polymers and their Composites
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Abstract:
： Recycling of thermosets and their composites is the only viable and best option going forward on thermosets waste management demonstrated with the incontrovertible fact that there is technical feasibility within the effectiveness of the very diverse technologies available to date. Mechanical, thermal, chemical methods and depolymerization with supercritical fluids are revisited in this seminar. Recyclability is a concept that takes into account not only the properties of the material but the whole set of factors which can promote the natural course of action of a potential recycling market; as a definition, recyclability is the capability of a material to be recycled through its life cycle among the economical, technical, legislative and waste management circumstances that integrates the material to the recycling industry. While the use of bio-based and eco-friendly materials is an objective of technological development, better waste management technologies must be applied throughout the whole lifecycle for a sustainable use of thermosets and their composites.

問い合わせ先：
名古屋大学大学院工学研究科　物質プロセス工学専攻
後藤元信
Tel: 052-789-3392
E-mail: goto.motonobu[at]material.nagoya-u.ac.jp

日時：平成29年6月29日（木）14時30分～16時00分
場所：名古屋大学VBL4階セミナー室
講師：Jiangtao Xu特任准教授 (VBL外国人客員教員、University of New South Wales（豪州）)

題目：PET-RAFT for Advanced Polymer Synthesis
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Abstract:
PET-RAFT (photoinduced electron/energy transfer – reversible addition/fragmentation chain transfer) technology is a living radical polymerization methodology controlled by visible light and (near) IR light, which merges the tranditional RAFT polymerization with photoredox catalysis. In this technology, ppm amount of photoredox catalyst is employed to catalyze RAFT agent and generate radicals for subsequent polymerization, instead of external radical initiator in the traditional RAFT method. The RAFT agent plays the role of initiator, chain transfer agent and termination agent.
Although slight modification to RAFT polymerization was made, it brings many “green” and significant attributes to living radical polymerizations, including: (1) low energy consumption and mild reaction conditions, (2) spatial and temporal control on radical polymerization, (3) high oxygen tolerance, (4) versatile photocatalysts and (5) selective polymerization activation. In this talk, these benefits from PET-RAFT technology will be summarized and demonstrated by our recent results. This technology is contributing to the development of green chemistry and sustainable polymer manufacturing chemistry, but also providing opportunities for the innovation of new methods of organic and polymer synthesis.



問い合わせ先：
名古屋大学大学院工学研究科 化学・生物工学専攻
上垣外正己
Tel: 052-789-5400
E-mail: kamigait[at]chembio.nagoya-u.ac.jp