1) Protonated methanol cluster
质子化甲醇团簇
2) protonated clusters
质子化团簇
3) Methanol cluster
甲醇团簇
1.
The methanol cluster produced by supersonic expansion is ionized resonantly by three photons at 355 nm outputted by a pulsed Nd: YAG laser.
YAG脉冲激光的三倍频输出(355 nm)3光子共振电离由脉冲分子束超声膨胀产生的甲醇团簇,观测到质子化的团簇离子序列(CH3OH)nH+(n=1~15),其中n=1~3的团簇离子强度明显大于其他尺寸的团簇离子,而n>3的强度随n的增大依次减小,且这种强度分布特征与电离激光相对于脉冲分子束的延时无关,同时对团簇离子的产生受实验条件的影响作了探讨。
4) protonated cluster ion
质子化团簇离子
1.
Ionic products were detected by the time of flight mass spectrometer A series of protonated cluster ions were measured:(C_2H_5OH)_nH~+ and(C_2H_5OH)_n(H_2O)_mH~+(n=1-12,m=1-4),which were produced from the proton transfer reactions in the clusters.
实验观测到多个序列的质子化团簇离子:(C2H5OH)nH+和(C2H5OH)n(H2O)mH+(n=1-12,m=1-4),其产生是通过团簇内的质子转移反应。
2.
Two series of protonated cluster ions,(CH_3OH)_nH~+(n=1-15) and(CH_3OH)_n(H_2O)H~+(n=7-15),were measured by technology of MS.
应用Nd:YAG脉冲激光器输出的355nm紫外激光实现了对甲醇的多光子电离,通过质谱技术观测到了两个质子化团簇离子系列:(CH3OH)nH+(n=1-15)和(CH3OH)n(H2O)H+(n=7-15),结合在HF/STO-3G和B3LYP/6-31G++水平上的从头计算对其反应通道做了分析,发现其产生经过了团簇内部的质子转移反应,且质子主要来自于羟基上的氢离子。
3.
Ionizes using the 355nm laser from the argon air-borne generation of methanol/ethanol/water pulse molecular beam,the time of flight mass spectrum observes many sequences of protonated cluster ions:(CH3CH2OH)nH+,(CH3OH)(H2O)(CH3CH2OH)nH+,(CH3OH)(CH3CH2OH)nH+,(CH3CH2OH)n(H2O)2H+ and(CH3CH2OH)n(H2O)H+(n=0～4).
利用355nm激光电离由氩气载代的甲醇/乙醇/水脉冲分子束,飞行时间质谱观测到多个序列的质子化团簇离子:(CH3CH2OH)nH+,(CH3OH)(H2O)(CH3CH2OH)nH+,(CH3OH)(CH3CH2OH)nH+,(CH3CH2OH)n(H2O)2H+和(CH3CH2OH)n(H2O)H+(n=0至4)。
5) protonated ammonia cluster
氨质子化团簇
1.
Studying the structures of protonated ammonia clusters(NH_3)~nH~+(n=1～8)with density functional theory;
用密度泛函理论研究氨质子化团簇(NH_3)_nH~+(n=1～8)的结构
补充资料：“质子-电子偶极-偶极”质子弛豫增强
“质子-电子偶极-偶极”质子弛豫增强
物理学术语。原子核外层中不成对的电子质量小，但磁动性很强，可使局部磁场波动增强，促使氢质子弛豫加快，从而使T1和T2缩短，这种效应即为PEDDPRE。过渡元素和镧系元素大部分在d和f轨道有多个不成对电子，所以其离子往往具有PEDDPRE，可用来作顺磁性对比剂，如钆(Gd)。Gd在外层有7个不成对电子，具有很强的顺磁性。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条