Organic nanoparticles suspensions preparation by underwater excimer laser ablation of polycarbonate

被引：20

作者：

Elaboudi, I. ^{[1
]}

Lazare, S. ^{[1
]}

Belin, C. ^{[1
]}

Bruneel, J. L. ^{[1
]}

Servant, L. ^{[1
]}

机构：

[1] Univ Bordeaux 1, LPCM, CNRS, UMR 5803, F-33405 Talence, France

来源：

APPLIED SURFACE SCIENCE | 2007年 / 253卷 / 19期

关键词：

laser ablation; organic nanoparticle; underwater; polycarbonate; Mie theory; Confocal Raman microspectroscopy; optical trapping; graphitic carbon; aqueous suspension;

D O I：

10.1016/j.apsusc.2007.02.167

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Ablation with excimer laser pulses on polycarbonate (PC) film has been performed in ultrapure water. It is demonstrated that it is a new efficient method for organic nanoparticles (ONP) suspensions synthesis. Proof of the formation of ONP is given by analysis of the water phase with AFM and UV-vis spectroscopy. The obtained transmission measurements are approached with the aid of Mie theory to estimate composition of suspensions. Results indicate that the polycarbonate film is partly ablated into nanometric particles with size ranging from 8 up to 180 nm. This is also supported by force atomic microscopy. Confocal Raman microspectroscopy was done directly on water suspensions. Thanks to the optical trapping phenomenon of the nanoparticles, their vibrational Raman spectrum was more easily obtained. Original polycarbonate is lost although some polymeric structures are detected along with graphitic carbon. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：7835 / 7839

页数：5

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