Formation of Au and tetrapyridyl porphyrin complexes in superfluid helium
Formation of Au and tetrapyridyl porphyrin complexes in superfluid helium
复制标题
DOI：
10.1039/c5cp01844g
复制
发表时间：
2015-01-01
影响因子：
3.3
通讯作者：
Yang, Shengfu
中科院分区：
文献类型：
--
作者：
Feng, Cheng;Latimer, Elspeth;Yang, Shengfu
通过将5，10，15，20-四（4-吡啶基）卟啉（H2 TPyP）分子和金原子与超流氦纳米液滴的共加成反应，形成了含有大分子有机物和金属原子的二元团簇，并用电子轰击质谱研究了所形成的复合物.除了母离子H2 TPyP产生的碎片主要来自吡咯，吡啶和甲基吡啶离子，因为它们的环结构的稳定性。当将Au共同添加到液滴中时，质谱由具有一个或多个附接的Au原子的H2 TPyP碎片离子主导。我们还表明，通过切换的顺序，其中Au和H2 TPyP被添加到氦滴，不同类型的H2 TPyP-Au络合物是清楚地从质谱明显。这项研究为控制超流氦纳米液滴中金属有机化合物的生长提供了一条新的途径。
Binary clusters containing a large organic molecule and metal atoms have been formed by the co-addition of 5,10,15,20-tetra(4-pyridyl) porphyrin (H2TPyP) molecules and gold atoms to superfluid helium nanodroplets, and the resulting complexes were then investigated by electron impact mass spectrometry. In addition to the parent ion H2TPyP yields fragments mainly from pyrrole, pyridine and methylpyridine ions because of the stability of their ring structures. When Au is co-added to the droplets the mass spectra are dominated by H2TPyP fragment ions with one or more Au atoms attached. We also show that by switching the order in which Au and H2TPyP are added to the helium droplets, different types of H2TPyP-Au complexes are clearly evident from the mass spectra. This study suggests a new route for the control over the growth of metal-organic compounds inside superfluid helium nanodroplets.