研究発表 - 吉岡　直樹

Effect of Substituent at 9-Potision on Spectroscopic Properties of Dihydroacridine Derivatives

HOSHINO HIDETAKA, HOSODA TAKUMI, MAEDA NARUAKI, SUZUKI RYOTA, MIURA YOUHEI, YOSHIOKA NAOKI

日本化学会 第96春季年会 （同志社大学京田辺キャンパス（京都府、京田辺市）） , 

2016年03月

, 

ポスター発表, 日本化学会

Synthesis of Chemically-Modified 3-tert-Butyl Benzotriazinyl Radicals and Their Magneto-Structural Correlation

吉岡 直樹

The International Chemical Congress of Pacifichem Basin Societies 2015 (Pacifichem 2015) （Hilton Hawaiian Village, Honolulu, U. S. A.） , 

2015年12月

, 

口頭発表（一般）

　概要を見る

In the present research, solid-state magnetic properties in pyrido and thiadizolo fused derivatives are discussed in connection with crystal polymorphism. Detailed magneto-structural correlation and effect of selective deuteration at tetramethyl group of NN moiety on solution ESR and solid-state magnetic property will also be discussed.

Chemical Modification to 3-tert-Butyl-1,5-diphenyl-6-oxoverdazyl Radical by Using Suzuki-Miyaura Cross Coupling Reaction; Crystal Structure, Optical and Magnetic Properties

吉岡 直樹

The International Chemical Congress of Pacifichem Basin Societies 2015 (Pacifichem 2015) （Hawaii Convention Center, Honolulu, U. S. A.） , 

2015年12月

, 

ポスター発表

　概要を見る

In the present research, we studied the modification method for 3-tert-butyl-1,5-diphenyl-6-oxoverdazyl by using the Suzuki-Miyaura cross coupling reaction. The reactions between 3-tert-butyl-1-(4-iodophenyl)-5-phenyl- or 3-tert-butyl-1,5-bis(4-iodophenyl)-6-oxoverdazyl and phenyl, 4-methoxyphenyl, 4-fluorophenyl and 2-thienylboronic acid were smoothly conducted, and mono-coupling products and bis-coupling products were obtained in good or moderate yield. From the visible spectra, absorptions at longest wavelength were red-shifted by the introducion of additional aryl groups, especially introduction of electron donating aryl groups showed larger red-shift than that of simple phenyl group due to the increase in HOMO-1 level. X-ray single crystal structural analysis for derivatives with additional phenyl and 4-fluorophenyl groups revealed pi-stacking between adjacent molecules. Their magnetic properties will also be discussed in connection with crystal structure.

Construction of Molecular Self-Assemblies Carrying a Nitronyl Nitroxide Radical and Effect of Selective Deuteration

吉岡 直樹

The International Chemical Congress of Pacifichem Basin Societies 2015 (Pacifichem 2015) （Hawaii Convention Center, Honolulu, U. S. A.） , 

2015年12月

, 

口頭発表（招待・特別）

　概要を見る

In the present research, solid-state magnetic properties in pyrido and thiadizolo fused derivatives are discussed in connection with crystal polymorphism. Detailed magneto-structural correlation and effect of selective deuteration at tetramethyl group of NN moiety on solution ESR and solid-state magnetic property will also be discussed.

Magneto-Structural Correlation in the Crystals of N,N-Bis(tert-butylphenyl) Nitroxyl Radical Derivatives

吉岡 直樹

The International Chemical Congress of Pacifichem Basin Societies 2015 (Pacifichem 2015) （Hawaii Convention Center, Honolulu, U. S. A.） , 

2015年12月

, 

ポスター発表

　概要を見る

Nitroxy radicals have been widely used as building blocks for molecular magnetic materials and paramagnetic ligands for metal-radical approach. As for aromatic nitroxyl radical derivatives, aryl tert-butylnitroxyl derivatives have been intensely investigated for such purposes. Diarylnixtoxyl also have interesting structural features from the point of delocalization of unpaired electron and close packing between aryl moieties. Although magneto-structural correlation of several diaryl nitroxyl derivatives have been reported, formation of extended magnetically coupled spin system have not been found. In the present research, several N,N-bis(tert-butylphenyl)nitroxyl radical was newly prepared. It formed 1-D staked column with separation below the sum of the Van del Waals radii. Its magnetic data in the solid state followed 1-D antiferromagnetic chain model. Detailed magneto-structural correlation of analogues will also be presented in connection with computational results.

Magneto-Structural Correlation in Chromium(V) Nitride Complexes with Salicylideneaniline Ligands Carrying Electron Withdrawing Group

吉岡 直樹

The International Chemical Congress of Pacifichem Basin Societies 2015 (Pacifichem 2015) （Hawaii Convention Center, Honolulu, U. S. A.） , 

2015年12月

, 

ポスター発表

　概要を見る

In the present research, a series of nitridochromium(V) complex with two salicylideneaniline ligands carrying electron withdrawing or donor substituent at 4-position of aniline moiety were prepared by using nitrogen atom transfer reaction and their magneto-structural correlation was studied in connection with their spectroscopic properties.

Synthesis of Dihydroacridine Derivatives with Two Pyridyl Groups and Their Photophysical Properties

吉岡 直樹

The International Chemical Congress of Pacifichem Basin Societies 2015 (Pacifichem 2015) （Hawaii Convention Center, Honolulu, U. S. A.） , 

2015年12月

, 

ポスター発表

　概要を見る

In the present research, a series of nitridochromium(V) complex with two salicylideneaniline ligands carrying electron withdrawing or donor substituent at 4-position of aniline moiety were prepared by using nitrogen atom transfer reaction and their magneto-structural correlation was studied in connection with their spectroscopic properties.

Functionalizaion of 1,5-Diphenyl-6-oxoverdazyl Radical by using Suzuki-Miyaura Cross Coupling Reaction

吉岡 直樹

The 9th Japanese-Russian Workshop on Open Shell Compounds and Molecular Spin Devices （Awaji Yumebutai International Conference Center, Hyogo, Japan） , 

2015年11月

, 

口頭発表（招待・特別）

Synthesis and Physicochemical Properties of Metal Complexes Carrying Thiadiazole Unit

吉岡 直樹

The 9th Japanese-Russian Workshop on Open Shell Compounds and Molecular Spin Devices （Awaji Yumebutai International Conference Center, Hyogo, Japan） , 

2015年11月

, 

ポスター発表

Crystal Structures of Benzotriazinyl Radicals and Their Physicochemical Properties

吉岡 直樹

The 9th Japanese-Russian Workshop on Open Shell Compounds and Molecular Spin Devices （Awaji Yumebutai International Conference Center, Hyogo, Japan） , 

2015年11月

, 

ポスター発表

Synthesis of Selectively Deuterated Nitronyl and Imino Nitroxidesand Their EPR Spectra

吉岡 直樹

The 9th Japanese-Russian Workshop on Open Shell Compounds and Molecular Spin Devices （Awaji Yumebutai International Conference Center, Hyogo, Japan） , 

2015年11月

, 

ポスター発表

ニトロニルニトロキシドラジカルを導入したサリチリデンアニリンおよびそのニトリドクロム(V)錯体の構造と磁気特性

中込森, 三浦 洋平, 吉岡 直樹

第9回分子科学討論会 （東京工業大学大岡山キャンパス（東京都・目黒区）） , 

2015年09月

, 

ポスター発表, 分子科学会

ベンゾトリアジニルニトロキシルヘテロビラジカルの合成と性質

髙橋 佑典, 三浦 洋平, 吉岡 直樹

第9回分子科学討論会 （東京工業大学大岡山キャンパス（東京都・目黒区）） , 

2015年09月

, 

ポスター発表, 分子科学会

Magneto-Structural Correlation in Imidazopyridine Nitornyl Nitroxide Derivatives and Polymorphism

吉岡 直樹

The 22nd International Conference on the Chemistry of the Organic Solid State (ICCOSS XXII) （TOKI MESSE Niigata/Japan） , 

2015年07月

, 

口頭発表（招待・特別）

Novel Benzotriazinyl Anion Radical Salt with Tetramethylammonium Cation

吉岡 直樹

The 22nd International Conference on the Chemistry of the Organic Solid State (ICCOSS XXII) （TOKI MESSE Niigata/Japan） , 

2015年07月

, 

ポスター発表

Magneto-Structural Correlation of 3-tert-Butyl Benzotriazinyl Radical Derivatives

吉岡 直樹

The 22nd International Conference on the Chemistry of the Organic Solid State (ICCOSS XXII) （TOKI MESSE Niigata/Japan） , 

2015年07月

, 

ポスター発表

Magneto-Structural Correlation in N,N-Bis(3-tert-butylphenyl)nitroxyl Radical Crystal

吉岡 直樹

The 22nd International Conference on the Chemistry of the Organic Solid State (ICCOSS XXII) （TOKI MESSE Niigata/Japan） , 

2015年07月

, 

ポスター発表

アクリジンを基本骨格とするD-π-A型蛍光分子の合成及び物性評価

多田　励起、　鈴木　良太、　三浦　洋平、　#H吉岡 直樹#H

日本化学会第９５春季年会 （日本大学船橋キャンパス（千葉県船橋市）） , 

2015年03月

, 

口頭発表（一般）, 日本化学会

有機金属反応を用いた6-オキソフェルダジル誘導体の化学修飾と物理化学的性質

大島　翔太、　三浦　洋平、 #H吉岡 直樹#H

日本化学会第９５春季年会 （日本大学船橋キャンパス（千葉県船橋市）） , 

2015年03月

, 

口頭発表（一般）, 日本化学会

水素結合部位を持つニトロニルニトロキシドバイラジカル誘導体の構造-磁性相関

齊藤　鷹規、　三浦　洋平、 #H吉岡 直樹#H

日本化学会第９５春季年会 （日本大学船橋キャンパス（千葉県船橋市）） , 

2015年03月

, 

口頭発表（一般）, 日本化学会