Study of the solvation Dynamics of Clusters using Femutosecond Spectroscopy

飞秒光谱研究团簇溶剂化动力学

• 批准号: 11304042
• 负责人: FUE Kiyokazu
• 金额: $ 24.76万
• 依托单位: Kobe University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11304042/
• 关键词: Alka limetal Atom; Alkaline-earth Metal Ion; Hydrated electron; ammonia clusters; Photoelectron spectroscopy; Femtosecond Laser Spectroscopy; Electrospray Ionization Mass Spectroscopy; シトクロムc; アルカリ土類金属原子イオン; 水和クラスター; アンモニアクラスター; 溶媒和過程; レーザー光電子

(1) Electronic spectra of Li(H2O)a have been measured using photodissociation spectroscopy. the spectra for larger clusters have been found to converge to the absorption spectra balk hydrated electron. We have also measured the lifetime of the 1:1 complex with pump-prove technique using a femtosecon laser and found an extremely fast internal conversion process.(2) Photoelectron spectra of Nam(NH3)[1 clusters have been investigated to examine the solvation of metal aggregates in small ammonia clusters. We have found that N% starts to dissolves even in clusters with three NH3 molecules.(3) Electronic spectra and photodissociation process of Mg(NH3)n have been investigated in order to explore the size dependence of the oxidation mode of Mg*. We have found the redox reactions of Mg+-water clusters for n<3 and the oxidation of Mg* to produce Mg2t for larger clusters. The two-photon ionization process of Mg(NH3)n has also been investigated using the femtosecond laser and obtain new results on the stability of Mg2+ in clusters.(4) A mass spectrometer with electrospray ionization source has been newly constructed to study the spectroscopy of nonvolatile ions. We have investigated the photodissociation process of hemin-(dimethyl surfoxide)n clusters and clarified the mechanism of b-cleavage reaction. We have also examined the photoionization process of the gas-phase cytochrome cions.

（1）LI（H2O）A的电子光谱已使用光解离光谱法测量。已经发现，较大簇的光谱会收敛到吸收光谱式水合电子。我们还使用fmtosecon激光器测量了使用泵杆技术的1：1复合物的寿命，并发现了一个非常快速的内部转换过程。（2）NAM的光电子光谱（NH3）[已研究了1个簇以检查小氨含量中金属聚集体的溶剂化。我们发现，即使在具有三个NH3分子的簇中也开始溶解。（3）已经研究了电子光谱和Mg（NH3）n的光解离过程，以探索Mg*氧化模式的尺寸依赖性。我们发现了n <3的Mg+水簇的氧化还原反应，并为Mg*的氧化产生MG2T的氧化。还使用飞秒激光器研究了Mg（NH3）N的两光子电离过程，并获得了簇中MG2+的稳定性的新结果。（4）具有电喷雾电离源的质谱仪已被新构建，用于研究非旋球离子的光谱。我们已经研究了Hemin-（二甲基甲基氧化物）N簇的光解离过程，并阐明了B裂解反应的机理。我们还研究了气相细胞色素围的光电离过程。

项目成果

富宅喜代一: "Near Threshold Photoionization of Germanium Clusters in the 248-144mm Region: Ionization Potentials for Gen"Europ.Phys.J.D.. D9. 309-311 (1999)

Kiyoichi Tomiya：“248-144mm 区域中锗团簇的近阈值光电离：Gen 的电离势”Europ.Phys.J.D. D9。

吉田真治: "Photoionization and photodissociation studies of semiconductor clusters"Trans.Mat.Res.Jpn,. 25. 995-998 (2000)

吉田真司：“半导体团簇的光离子化和光解离研究”Trans.Mat.Res.Jpn，25. 995-998 (2000)

S. Nonose, T. Taguchi, K. Mizuma and K. Fuke: "Electronic Sp Solvated NH, Radicals, NH, (NH3)n (n = I - 6)"Europ. Phys. J.. D9. 309-311 (1999)

S. Nonose、T. Taguchi、K. Mizuma 和 K. Fuke：“电子 Sp 溶剂化 NH，自由基，NH，(NH3)n (n = I - 6)”Europ。

野々瀬真司: "Electronic Spectra and Structures of Solvated NH_4 Radicals, NH_4(NH_3)_n(n=1-8)"J. Phys. Chem.. (印刷中).

Shinji Nonose：“溶剂化 NH_4 自由基的电子光谱和结构，NH_4(NH_3)_n(n=1-8)”J. Phys.（印刷中）。

高須良三: "Solvation Process of Na_m in Small Ammonia Clusters : Photoelectron Spectroscopy of Na_m-(NH_3)_n (m≦3)"J.El.Sepctros.Relat.Phenom.. 106. 127-140 (2000)

Ryozo Takasu：“Na_m 在小氨团簇中的溶剂化过程：Na_m-(NH_3)_n (m≤3) 的光电子能谱” J.El.Sepctros.Relat.Phenom.. 106. 127-140 (2000)