Search Results 1-20 of 84

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  • Facile synthesis of picenes incorporating imide moieties at both edges of the molecule and their application to n-channel field-effect transistors

    Guo Yuxin , Yoshioka Kaito , Hamao Shino , Kubozono Yoshihiro , Tani Fumito , Goto Kenta , Okamoto Hideki

    Picene derivatives incorporating imide moieties along the long-axis direction of the picene core (Cn-PicDIs) were conveniently synthesized through a four-step synthesis. … Photochemical cyclization of dinaphthylethenes was used as the key step for constructing the picene skeleton. …

    RSC Advances 10(52), 31547-31552, 2020-08-26

    IR 

  • Efficient Synthesis of π-Conjugated Organic Molecules Utilizing Cross-Coupling Reactions and Application to Electronic Devices  [in Japanese]

    Nishihara Yasushi

    … As one of representative phenacenes, picene is a polycyclic aromatic hydrocarbon consisting of five fused benzene rings with a W-shape structure, which exhibits high hole mobility. … : 8,7-<i>b</i>'] dithiophene (PDT) was achieved by replacing two terminal phenyl rings in picene with thiophene rings. …

    Journal of Synthetic Organic Chemistry, Japan 78(9), 867-874, 2020

    J-STAGE 

  • Fabrication of Highly Oriented Organic Thin Films Utilizing Well-Ordered Monolayer as Template  [in Japanese]

    Iwasawa Masato , Hasegawa Yuri , Sasaki Masahiro , Yamada Yoichi

    … 本研究ではPiceneなどの分子の薄膜形成過程の解明のため、異方的な表面を持つAg(110)基板上に、これらの分子の高配向膜の作製を行なった。 …

    Abstract of annual meeting of the Surface Science of Japan 2018(0), 309, 2018

    J-STAGE 

  • Pinpoint-Fluorinated Polycyclic Aromatic Hydrocarbons (F-PAHs): Their Synthesis via Electrophilic Activation of Fluoroalkenes and Properties  [in Japanese]

    Fuchibe Kohei , Fujita Takeshi , Ichikawa Junji

    … Notably, the HOMO-LUMO energy gaps of F-picenes, consisting of five benzene rings, were smaller than that of the corresponding fluorine-free picene by 0.02-0.26 eV. … The introduction of fluorine substituent(s) into picenes increased their solubilities in organic solvents, which was best exemplified by the much higher solubilities of 6-fluoropicene (5.3 wt%), 6,7-difluoropicene (5.3 wt%), and 13-fluoropicene (3.1 wt%) in THF, compared to that of picene (0.20 wt%)。 …

    Journal of Synthetic Organic Chemistry, Japan 76(9), 938-953, 2018

    J-STAGE 

  • Electronic States of Highly Ordered DNTT and Picene Molecular Layer  [in Japanese]

    HASEGAWA Yuri , YAMADA Yoichi , SASAKI Masahiro

    … <p>Molecular arrangements and electronic states of well-ordered Dinaphtho[2,3-b:2′3′-f]Thieno[3,2-b]-Thiophene (DNTT) and picene thin film on single crystal were measured by means of scanning tunneling microscope (STM) and angle-resolved photoemission spectroscopy, respectively. … DNTT and picene form single crystalline-like molecular arrangement on inert Au(111) substrate. …

    Vacuum and Surface Science 61(6), 366-371, 2018

    J-STAGE 

  • Pinpoint-fluorinated polycyclic aromatic hydrocarbons (F-PAHs): Syntheses of difluorinated subfamily and their properties

    Fuchibe Kohei , Shigeno Kento , Zhao Nan , Aihara Hiromichi , Akisaka Rikuo , Morikawa Toshiyuki , Fujita Takeshi , Yamakawa Kie , Shimada Toshihiro , Ichikawa Junji , 渕辺 耕平 , 藤田 健志 , 市川 淳士

    … (iii) The HOMO–LUMO energy gaps of the pinpoint-fluorinated PAHs were smaller than that of the corresponding fluorine-free PAH (i.e., picene) by 0.02–0.26 eV, and the HOMO and LUMO energy levels were lowered by 0.10–0.22 eV and 0.12–0.41 eV, respectively. …

    Journal of fluorine chemistry (203), 173-184, 2017-11

    IR 

  • Valence electronic structure of picene thin films on Au(111) studied by UPS, MAES, and first-principles calculation  [in Japanese]

    Higuchi Takafumi , Suzuki Atsushi , Ito Yujiro , Koitaya Takanori , Aoki Masaru , Shudo Ken-ichi , Masuda Shigeru

    … <p>紫外光電子分光(ultraviolet photoemission spectroscopy, UPS), 準安定原子電子分光(metastable atom electron spectroscopy, MAES) を用いて、Au(111)表面上に作製したpicene(C22H14)薄膜の価電子構造の解析を行った。 … これはpicene-Au(111)間の相互作用が弱く、軌道混成が小さいことを示す。 …

    Meeting Abstracts of the Physical Society of Japan 72.1(0), 2477-2477, 2017

    J-STAGE 

  • Physical properties of each K<sub>x</sub>picene phase  [in Japanese]

    Kobayashi Mototada , Heguri Satoshi

    … <p>我々はこれまでに、様々な組成xを持つK_x_piceneを作製し、そのESRとSQUIDの結果から金属相が存在しないことを明らかにし、既報の超伝導は含まれる強磁性不純物による信号の見誤りであろうことを報告した。 …

    Meeting Abstracts of the Physical Society of Japan 72.1(0), 1816-1816, 2017

    J-STAGE 

  • Electronic state of highly ordered picene and DNTT molecular layers  [in Japanese]

    Hasegawa Yuri , Yamada Yoichi , Sasaki Masahiro

    … 本研究では、Ag(110)上にPiceneやDNTTの高配向膜を作製した。 …

    Abstract of annual meeting of the Surface Science of Japan 37(0), 68, 2017

    J-STAGE 

  • Local electronic states at picene-Au(111) interface studied by electron spectroscopy and first-principles calculation  [in Japanese]

    Higuchi Takafumi , Suzuki Atsushi , Ito Yujiro , Koitaya Takanori , Aoki Masaru , Shudo Ken-ichi , Masuda Shigeru

    ピセンはベンゼン環が5つ縮合した芳香族化合物であり,これまで超電導に関する物性研究が数多く行われてきた。近年では,ピセンを有機半導体として電子デバイスに応用するための基礎研究として,ピセン-金属界面の物性研究が行われるようになってきた。そこで本研究は,紫外光電子分光(UPS),準安定原子電子分光(MAES)及び第一原理計算を用いて,ピセン/Au(111)界面の電子状態の解析を行った。<br& …

    Abstract of annual meeting of the Surface Science of Japan 37(0), 72, 2017

    J-STAGE 

  • Tow-Photon Ionization of Picene in the Presence of Cyclodextrin  [in Japanese]

    竹下 達哉 , Takeshita Tatsuya , 箕﨑 知香 , Kubo Hazuki , 原 道寛 , Minosaki Chika , 矢野 篤 , Yano Atsushi , 原 道寛 , Hara Michihiro

    … Two-photon ionization (TPI) of picene (Pi) in the presence of cyclodextrin (CD) was investigated by using 266-nm laser pulse excitation. …

    福井工業大学研究紀要 Memoirs of Fukui University of Technology (47), 145-152, 2017

    IR 

  • Absence of a Metallic Phase in K<sub>x</sub>picene  [in Japanese]

    Kobayashi Mototada , Heguri Satoshi

    … <p>我々はこれまでに、既報のK_x_picene(x~3)の超伝導は含まれる強磁性不純物の振る舞いである可能性が高いことを報告した。 … この為、piceneとK金属の様々な定比化合物試料、piceneと過剰のK金属の断続的加熱試料につき、ESR及びSQUIDのK組成依存性、反応時間依存性及び低温までの温度依存性を調べた。 …

    Meeting Abstracts of the Physical Society of Japan 71.2(0), 1641-1641, 2016

    J-STAGE 

  • 19pBG-9 Characterization of 14 K superconducting phase of K-doped picene  [in Japanese]

    Kubozono Yoshihiro , Sugino Hisako , Gohda Shin , Terao Takahiro , Nishiyama Saki , Zheng Lu , Goto Hidenori , Eguchi Ritsuko , Okamoto Hideki , Kobayashi Tatsuo C. , Kambe Takashi

    Meeting Abstracts of the Physical Society of Japan 71.1(0), 1851, 2016

    J-STAGE 

  • Publication of highly oriented picene molecular film based on the control of monolayer

    Tsuboi Hiromu , Sasaki Masahiro , Yamada Yoichi

    piceneは次世代有機デバイス材料として期待されているが、良質の薄膜の作成手法は未だ確立していない。 … 本研究では基板表面を選ぶことでpicene単分子層の構造を制御し、薄膜構造を光学顕微鏡等で計測した。 …

    Abstract of annual meeting of the Surface Science of Japan 35(0), 419, 2015

    J-STAGE 

  • Alkali metal adsorption on picene molecular layer

    Yano Masahiro , Shimizu Ryosuke , Tsuboi Taimu , Hasegawa Yuri , Yamada Yoichi , Sasaki Masahiro

    Au(111)面上に作製したピセン分子層にアルカリ金属を蒸着した。このときの構造と電子状態を走査型トンネル顕微鏡(STM)と放射光を利用した角度分解光電子分光(ARPES)を用いて詳細に計測した。これらの結果をもとにピセンにアルカリ金属をドープした場合の変化について議論する。

    Abstract of annual meeting of the Surface Science of Japan 35(0), 176, 2015

    J-STAGE 

  • 22aPS-11 Electrical resistivity measurements of vacuum-evaporated K-doped picene films prepared at low temperature  [in Japanese]

    Hamada T. , Jabuchi T. , Wakita T. , Muraoka Y. , Yokoya T.

    Meeting Abstracts of the Physical Society of Japan 70.1(0), 2109, 2015

    J-STAGE 

  • Fabrication and characterization of picene-thin-film electric-double-layer transistors  [in Japanese]

    Shimo Yuma , Goto Hidenori , Kubozono Yoshihiro , Hayashi Yasuhiko

    有機薄膜電界効果トランジスタ(FET)の駆動に要する電圧である「しきい値電圧」(V_<th>)が非常に高いため,実用化に向けて大きな問題となっている.本研究は,イオン液体を用いたFETである電気二重層トランジスタ(Electric Double-Layer Transistor:EDLT)を使って,この問題を解決することを目指している.活性層としてピセン薄膜を用いてEDLTを作製し,そ …

    IEICE technical report. Electron devices 114(12), 31-34, 2014-04-17

  • Theoretical investigation of the band structure of picene single crystals within theGWapproximation

    Yanagisawa Susumu , Morikawa Yoshitada , Schindlmayr Arno

    Japanese Journal of Applied Physics 53(5S1), 05FY02-05FY02, 2014-01-01

    DOI 

  • 金属及び半導体表面上での、picene分子膜の成長過程計測

    清水 亮助 , 矢野 雅大 , 遠藤 めぐみ , 佐々木 正洋 , 山田 洋一

    … STM及びXPSを用いて、Cu(111)及びAu(111)表面上でのpicene分子膜の成長に伴う構造と電子状態の変化を計測した。 … Au(111)基板上では、picene分子は被覆率に依存して2種類の構造を形成するが、Cu(111)基板上では、単一の構造のみが形成されることが わかった。 … また、各金属基板とpicene分子との結合は非常に弱いこと、さらに多層が形成されにくいことがわかった。 …

    Abstract of annual meeting of the Surface Science of Japan 34(0), 169, 2014

    J-STAGE 

  • Microscopic Structure of K-Doped Organic Monolayers

    Yano Masahiro , Okada Ryosuke , Endo Megumi , Shimizu Ryosuke , Hasegawa Yuri , Yamada Yoichi , Sasaki Masahiro

    … Potassium (K) adsorption on coronene, picene and [6]phenacene monolayers, which serves as a model system for the metal-intercalated aromatic superconductors, was studied in a molecular scale. …

    e-Journal of Surface Science and Nanotechnology 12(0), 330-333, 2014

    J-STAGE 

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