Matrix-assisted laser ablation production of gold cluster ions from Au-coated photonic crystals.
Matrix-assisted laser ablation production of gold cluster ions from Au-coated photonic crystals.
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DOI：
10.1002/jms.2994
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发表时间：
2012-05
期刊：
影响因子：
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通讯作者：
Jincheng Li;Jian’an Liu;Yi Chen
中科院分区：
文献类型：
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作者：
Jincheng Li;Jian’an Liu;Yi Chen
A new strategy was explored to generate pure gold cluster ions, Au(n)(+/-), from gold films deposited on solid substrates via a matrix-assisted laser ablation technique. The gold films deposited on SiO(2)-particle-assembled photonic crystals were demonstrated to be the most ideal compared with the films deposited on various glass slides. Dropped with a matrix of 2-(4-hydroxyphenylazo) benzoic acid and bombarded by nitrogen pulse laser (355 nm), they could release a series of Au(n)(+) with n more than 110 or Au(n)(-) with n more than 60 according to the data obtained by inline time-of-flight mass spectrometry. The gold-deposited photonic crystal substrates could be stored at room temperature for at least 6 months. The method is hence steady and convenient in use.
