| Project/Area Number |
09450334
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B).
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
有機工業化学
|
|---|
| Research Institution | KYUSHU UNIVERSITY |
|---|
Principal Investigator |
KITAMURA Tsugio KYUSHU UNIVERSITY, Faculty of Engineering, Ass.Prof., 大学院・工学研究院, 助教授 (00153122)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
NAGATA Kensuke KYUSHU UNIVERSITY, Faculty of Engineering, Research Ass., 大学院・工学研究院, 助手 (40264080)
TANIGUCHI Yuki KYUSHU UNIVERSITY, Faculty of Engineering, Research Ass., 大学院・工学研究院, 助手 (50217139)
FUJIWARA Yuzo KYUSHU UNIVERSITY, Faculty of Engineering, Prof., 大学院・工学研究院, 教授 (10029481)
|
|---|
| Project Period (FY) |
1997 – 2000
|
| Project Status |
Completed (Fiscal Year 2000)
|
| Budget Amount *help |
¥12,300,000 (Direct Cost: ¥12,300,000)
Fiscal Year 2000: ¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1999: ¥3,300,000 (Direct Cost: ¥3,300,000)
Fiscal Year 1998: ¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 1997: ¥3,800,000 (Direct Cost: ¥3,800,000)
|
|---|
| Keywords | Diaryldiacetylene / Liquid Crystals / Thiophenes / Ferroelectric Liquid Crystals / Enynes / Diethynylethenes / Tetraethynylethenes / Charge-Transfer Complex / ジエチニルエテン / テトラエチニルエテン / ジアリールアセチレン / アルキニルヨードニウム塩 / アルキニルベンゾトリアゾール / エンイン誘導体 / エンジイン誘導体 / ジアリールジアセチン / L-4-ジアリフレ-1-フチン-3-イン / L1-ビス(アリールエチニル)エテン / チオフェン誘導体 / キラルジアリールジアセチレン / キラルスメクチックC相 |
|---|
| Research Abstract |
(1) Selective Synthesis of Diaryldiacetylenes and Evaluation of Liquid Crystalline Properties
Arylethynyliodonium salts with long alkyl groups were prepared easily prepared by reaction of arylacetylenes and hydorxy(tosyloxy)iodobenzene. The reaction of the arylethynyliodonium salts with alkynylcopper reagents selectively provided diaryldiacetylenic compounds that exhibited liquid-crystalline properties. Liquid-crystalline thiophene derivatives were also synthesized from the diaryldiacelenes. Furthermore, chiral (S)-(2-methylbutoxy)phenylethynyliodonium tosylate was synthesized first and applied to chiral diaryldiacetylenic compounds by the reaction with arylethynylcopper reagents, affording chiral diaryldiacetylenic ferroelectric liquid crystals.
(2) Synthesis of Liquid-Crystalline Enynes
Synthesis of 1,4-diaryl-1-buten-3-ynes were synthesized by the palladium-catalyzed coupling reaction of arylacetylenes with styryl bromides having long alkyl groups. Thus prepared enyne derivatives showed smectic and nematic phases in a wide range of temperature.
(3) Synthesis of 1,1 -Diethynylethenes and Tetraethynylethenes
1,1 -Diethynylethenes and tetraethynylethenes have the structure that the π electronic system is delocalized on the molecular plane. 1,1 -Bis(arylethynyl)ethenes and tetrakis(4-decyloxyphenylethynyl)ethene were prepared but did not show mesogenic properties. The new charge-transfer complexes with trinitrofluorenone were obtained.
|
