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Issue 45, 2012
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Direct observation of aluminium ions produced via pulsed laser ablation in liquid: a ‘turn-on’ fluorescence study

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Abstract

An Al metal plate was ablated by a pulsed Nd–YAG laser to produce nano-structured Al and gamma-Al2O3 in deionized water without any surfactants or catalysts. In this study, direct evidence for the production of Al3+ ions from the plasma plume is presented for the first time by characterizing the absorption and emission spectra of their [Al(salophen)]+ complex. Very interestingly, a remarkable increase in the fluorescence intensity was observed when the Al3+ ions, produced via the pulsed laser ablation, complexed with the salophen ligand. This fluorescence ‘turn-on’ behaviour of [Al(salophen)]+ was investigated by DFT/TD-DFT calculations. Based on these results, mechanisms for the production of aluminium and alumina nanoparticles in the pulsed laser ablation in liquid (PLAL) process are proposed.

Graphical abstract: Direct observation of aluminium ions produced via pulsed laser ablation in liquid: a ‘turn-on’ fluorescence study

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Supplementary files

Article information


Submitted
19 Jul 2012
Accepted
01 Oct 2012
First published
02 Oct 2012

Phys. Chem. Chem. Phys., 2012,14, 15677-15681
Article type
Paper

Direct observation of aluminium ions produced via pulsed laser ablation in liquid: a ‘turn-on’ fluorescence study

S. Lee, A. Ahn and M. Y. Choi, Phys. Chem. Chem. Phys., 2012, 14, 15677
DOI: 10.1039/C2CP42463K

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