乙醇/水混合团簇的多光子电离质谱研究  

Mass spectra of multiphoton ionization of water/methanol clusters

作　　者：姜素蓉[1] 张树东[1] 孔祥和[1] 许明坤[1] 蔡廷栋[1] 

机构地区：[1]曲阜师范大学物理工程学院,山东曲阜273165

出　　处：《激光杂志》2007年第1期29-30,共2页Laser Journal

基　　金：曲阜师范大学博士科研启动基金资助

摘　　要：利用激光器(输出波长355nm)激发乙醇和水二元混合团簇中的离子-分子反应,运用飞行时间质谱技术检测反应后生成的团簇离子。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。通过对团簇离子的峰强度同乙醇数目n和水分子数目m的关系的研究发现,团簇离子(C2H5OH)8(H2O)H+是幻数结构。Laser（355nm） was used to initiate the ion - molecule reactions in the binary cluster of water and ethanol. Ionic products were detected by the time of flight mass spectrometer A series of protonated duster ions were measured：（C2H5OH）nH^＋ and （C2H5OH）n（H2O）mH^＋（n = 1 - 12, m = 1 -4）, which were produced from the proton transfer reactions in the dusters. We study the relation of duster ions intensities with number of n and m, and conclude that （C2H5OH）8（H2O）H^＋ has magic structure.

关 键 词：氢键团簇 质子化团簇离子 质子转移 信号强度 幻数 

分 类 号：O657.6[理学—分析化学]