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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Structure and Dynamics of Phthalocyanine-Argon_n(n = 1-4)Complexes Studied in Helium Nanodroplets
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Structure and Dynamics of Phthalocyanine-Argon_n(n = 1-4)Complexes Studied in Helium Nanodroplets

机译：氦纳米液滴中酞菁-Argon_n（n = 1-4）配合物的结构和动力学

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摘要

Van der Waals clusters of phthalocyanine with 1 -4 argon atoms formed inside superfluid helium nanodroplets have been investigated by recording fluorescence excitation spectra as well as emission spectra.The excitation spectra feature a multitude of sharp lines when recorded in superfluid helium droplets in contrast to the respective spectra measured in a seeded supersonic beam(Cho et al.Chem.Phys.Lett.2000,326,65).The pickup technique used for doping of the phthalocyanine and the argon into the droplets allows for nondestructive analysis of the cluster sizes.Alternation of the pickup sequence gives information on the binding site of the argon atoms.The investigation of dispersed emission spectra in helium droplets can be used as a special tool for the identification of 0_0~0 transitions within the variety of sharp lines seen in the excitation spectra.Thus,different isomers of the clusters can be distinguished.Moreover,the emission spectra reveal information on dynamic processes such as vibrational predissociation of the van der Waals complexes and interconversion among isomeric species.The binding energy of the phthalocyanine-argon_1 complex in helium droplets was estimated to be at most 113 cm~(-1).
机译：通过记录荧光激发光谱和发射光谱，研究了在超流体氦纳米液滴内部形成的具有1 --4氩原子的酞菁的范德华星团。在播种的超声束中测量各自的光谱（Cho et al.Chem.Phys.Lett.2000,326,65）。用于将酞菁和氩气掺杂到液滴中的拾取技术允许对团簇尺寸进行无损分析。拾取顺序的交替提供了有关氩原子结合位点的信息。研究氦液滴中的分散发射光谱可作为一种特殊工具，用于识别激发中看到的各种尖锐线中的0_0〜0跃迁。因此，可以区分团簇的不同异构体。此外，发射光谱揭示了有关动态过程的信息，例如范德华配合物的振动预离解和异构体之间的相互转化。据估计，酞菁-氩_1配合物在氦气液滴中的结合能最大为113 cm〜（-1）。

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