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Influence of chirality on the cyclohexene-fused C_(60) fullerene derivatives as an accepter partner in a photovoltaic cell

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Green Energy & Environment 2016年第2期1卷 149-155页

作者： Kiyotaka Sugawara naoshi nakamura Yu Yamane Shuichi Hayase Toshiki Nokami Toshiyuki Itoh Department of Chemistry and Biotechnology Graduate School of Engineering Tottori University Center for Research on Green Sustainable Chemistry Tottori University

Organic photovoltaic devices(OPVs) using chiral cyclohexene-fused [C_(60)]-fullerene derivatives that have(l)-menthyl ester moiety have been prepared and their properties evaluated as acceptor molecules with P3 HT polymer: racemic cyclohexene-fused [C_(60)] fullenene,(RS)-(1 R,2 S,5 R)-2 a showed higher PCE(2.81%) than that of standard [C_(60)]-PCBM(2.64%) under the same analysis conditions. On the contrary, devices using chiral(R)-(1 R,2 S,5 R)-2 a and(S)-(1 R,2 S,5 R)-2 a, showed PCE as 1.08% and 1.10%, respectively. The main origin of the differences in PCE was found to be their poor Jsc values. The results indicate that the aggregation state might influence the interaction state with P3 HT and impact the results of the OPV properties, Jsc values in particular.

关键词： Solar cell Accepter molecule Cyclohexene-fused[C60]-fullerene Chirality

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Magnetic Behavior of Some Rare-Earth Transition-Metal Perovskite Oxide Systems

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Journal of Rare Earths 2004年第6期22卷 733-738页

作者： Kenji Yoshii Akio nakamura Masaichiro Mizumaki naoshi Ikeda Jun'ichiro Mizuki Japan Atomic Energy Research Institute Mikazuki Hyogo 679-5148 JapanJapan Atomic Energy Research Institute Tokai-mura Ibaraki 305-1195 JapanJapan Synchrotron Radiation Research Institute Mikazuki Hyogo 679-5198 JapanJapan Synchrotron Radiation Research Institute Mikazuki Hyogo 679-5198 JapanJapan Atomic Energy Research Institute Mikazuki Hyogo 679-5148 Japan

Magnetic properties were investigated for the rare-earth 3d-transition metal oxides with the perovskite structure. Intriguing magnetic phenomena were reviewed for a few systems:magnetization peak effect in the titanates, magnetization reversal in the chromites and metallic ferromagnetism in the cobaltites. The results suggest an important role of the rare-earth ions for the magnetic properties of such complex oxides.

关键词： perovskite oxide magnetic properties rare earth transition metal

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Triazole Ureas Covalently Bind to Strigolactone Receptor and Antagonize Strigolactone Responses

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Molecular Plant 2019年第1期12卷 44-58页

作者： Hidemitsu nakamura Kei Hirabayashi Takuya Miyakawa Ko Kikuzato Wenqian Hu Yuqun Xu Kai Jiang Ikuo Takahashi Ruri Niiyama naoshi Dohmae Masaru Tanokura Tadao Asami Graduate School of Agricultural and Life Sciences The University of Tokyo1-1-1 YayoiBunkyo-kuTokyo 113-8657Japan ar Characterization Unit RIKEN Center for Sustainable Resource ScienceWakoSaitamaJapan Department of Biochemistry Faculty of ScienceKing Abdulaziz UniversityP.O.Box 80203Jeddah 21589Saudi Arabia

Strigolactones,a class of plant hormones with multiple functions,mediate plant-plant and plantmicroorganism communications in the *** this study,we developed potent strigolactone antagonists,which covalently bindto the strigolactone receptor D14,by preparing an array of triazole urea *** yeast two-hybrid and rice-tillering assays,we identified a triazole urea compound KK094 as a potent inhibitor of strigolactone *** chromatography-tandem mass spectrometry analysis and X-ray crystallography revealed that KK094 was hydrolyzed by D14,and that a reaction product of this degradation covalently binds to the Ser residue of the catalytic triad of ***,we identified two triazole urea compounds KK052 and KK073,whose effects on D14-D53/D14-SLR1 complex formation were opposite due to the absence (KK052)or presence (KK073)of a trifluoromethyl group on their phenyl *** results demonstrate that triazole urea compounds are potentially powerful tools for agricultural application and may be useful for the elucidation of the complicated mechanism underlying strigolactone perception.

关键词： strigolactone covalent antagonist triazole urea crystal structure

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Determination of Telomere Length by the Quantitative Fluorescence <i>in Situ</i>Hybridization (Q-FISH) Method

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American Journal of Analytical Chemistry 2014年第12期5卷 775-783页

作者： Junko Aida Naotaka Izumiyama-Shimomura Ken-ichi nakamura naoshi Ishikawa Masanori Terai Yoko Matsuda Shinsuke Aida Tomio Arai Kaiyo Takubo Department of Pathology International University of Health and Welfare Mita Hospital Tokyo Japan Department of Pathology Tokyo Metropolitan Geriatric Hospital Tokyo Japan Research Team for Geriatric Pathology Tokyo Metropolitan Institute of Gerontology Tokyo Japan

Telomeres are nucleoprotein complexes located at the ends of eukaryotic chromosomes and are shorten with aging or various causes. Shortened telomere plays an important role for chromosomal instability in carcinogenesis, or a number of diseases in relation to aging. FISH using peptide-nucleic acid (PNA) probe is suitable for analyzing telomeres, because telomere is a part of DNA molecule and localized in chromosomal end in loop shape structure (T-loop). We introduce our telomere analysis for tissue sections and cultured cells in this paper. On the tissue sections, we analyze telomere length with telomere intensity to centromere intensity ratio (TCR), centromere as an inner control. In the cultured cells, we analyze telomere lengths on each chromosome with karyotyping. Those Q-FISH methods by PNA probe are an accurate and reliable tool for research on telomere lengths in various conditions in biology.

关键词： Telomere Telomere Length Q-FISH Tissue Section Chromosome

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