Studies for molecular electronic devices based on light-induced phase transitions

基于光诱导相变的分子电子器件研究

• 批准号: 05453051
• 负责人: AWAGA Kunio
• 金额: $ 4.35万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05453051/
• 关键词: Metal Complexes; Magnetism; Optical Properties; Molecular Devices; ナノコンポジット; インターカレーション; 磁化率; 光誘起相転移

(CH_3)_2CHNH_3^+CuCl_3^- is known to show a thermochromic phase transition at about 50ﾟC,where the magnetic interaction between the Cu^<2+> ions drastically changes from antiferromagnetic to ferromagnetic. We have measured temperature dependence of the UV-VIS-NIR spectrum of this material, and have found that two bands which appear at 1.3 and 2.2eV at room temperature, completely disappear above the phase transition temperature. Radiation of the two bands were carried out with two kinds of lasers, but observation of the light-induced phase transition was unsuccessful. In future, we need an advanced strategy where the potential surface of the excited state is considered.

（CH_3）_2CHNH_3^+CuCl_3^-在50℃左右表现出热致变色相变，Cu^<2+>离子之间的磁相互作用从反铁磁转变为铁磁。我们测量了该材料的UV-VIS-NIR光谱的温度依赖性，发现在室温下出现在1.3和2.2eV的两个波段，在相变温度以上完全消失。用两种激光器对这两个波段进行了辐射，但没有观察到光致相变。未来，我们需要一个先进的策略，其中激发态的电位面被考虑。

项目成果

W.Fujita and K.Awaga: "Preparation and magnetic property of saponite clay.." J.Chem.Soc.,Chem.Commun.(印刷中). (1995)

W.Fujita 和 K.Awaga：“皂石粘土的制备和磁性。”J.Chem.Soc.，Chem.Commun.（出版中）。

K.Awaga et al.: "Variable magnetic interactions in organic radical…" Phys.Rev.B. 49. 3975-3981 (1994)

K.Awaga 等人：“有机自由基中的可变磁相互作用……”Phys.Rev.B 49. 3975-3981 (1994)

K.Awaga et al.: "Variable magnetic interactions in an organic radical..." Phys.Rev.B. 49. 3975-3981 (1994)

K.Awaga 等人：“有机自由基中的可变磁相互作用……”Phys.Rev.B。

K.Awaga et al.: "Ferromagnetic properties and crystal structures of pyridyl…" Synth.Metals. 56. 3311-3316 (1993)

K.Awaga 等人：“吡啶基的铁磁特性和晶体结构……”Synth.Metals 56. 3311-3316 (1993)

K.Awaga et al.: "Crystal structure and electronic state of the organic…" Mol.Cryst.Liq.Cryst.232. 79-88 (1993)

K.Awaga 等人：“有机物的晶体结构和电子态……”Mol.Cryst.Liq.Cryst.232 (1993)。