中国物理B ›› 2010, Vol. 19 ›› Issue (12): 123602-123602.doi: 10.1088/1674-1056/19/12/123602
曾文碧1, 张树东2, 张海芳2
Zhang Shu-Dong(张树东)a)† , Zhang Hai-Fang(张海芳)a), and Tzeng Wen-Bi(曾文碧) b)
摘要: This paper studies supersonic jet-cooled 1-fluoronaphthalene (1FN) clusters by ultraviolet (UV) laser ionization at 281 nm in a time-of-flight mass spectrometer. The (1FN)n+ (n=1–3) series cluster ions are observed where the signal intensity decreases with increasing cluster size. The effects of sample inlet pressures and ionization laser fluxes to mass spectral distribution are measured. Using density functional theory calculations, it obtains a planar geometric structure of 1FN dimer which is combined through two hydrogen bonds. The mass spectra indicate that the intensity of 1FN trimer is much weaker than that of 1FN dimer and this feature is attributed to the fact that the dimer may form the first "shell" in geometric structure while the larger clusters are generated based on this fundamental unit.
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