Preparation of Organic Nanoparticle Colloids by Laser Ablation and Their Nonlinear Optical Properties

被引：0
作者：
YANG Jie WANG Rui DING Ran LI Aiwu YU Yongsen WANG Jiping and YANG Han State Key Laboratory on Integrated Optoelectronics College of Electronic Science and Engineering Jilin University Changchun P R China Department of Radiology The First Hospital of Jilin University Changchun P R China [1 ,1 ,1 ,1 ,1 ,2 ,1 ,1 ,130012 ,2 ,130021 ]
机构：
来源：
ChemicalResearchinChineseUniversities | 2011年 / 27卷 / 06期
关键词：
Laser ablation; Organic nanocrystal; Nonlinear optical property;
D O I：
暂无
中图分类号：
TB383.1 [];
学科分类号：
070205 ; 080501 ; 1406 ;
摘要：
Suspension of micrometer-sized 1,4-bis(4-methylstyryl)benzene(p-MSB) was converted into colloidal nanocrystal solution by irradiation with an femtosecond laser(800 nm, 1 kHz). The prepared nanocrystals were rectangular with ca. 100 nm in size. The same crystal structure as that of bulk crystals was confirmed by X-ray diffraction measurement. UV-Vis spectra and emission spectra of the nanoparticle dispersions in dichloromethane(poor solvent) were examined. The nanocrystal exhibits large quantum yield(89%). The nonlinear optical properties of the nanocrystals were further studied by Z-scan technique with femtosecond laser duration of 120 fs at a wavelength of 800 nm. The results show that the nanocrystals exhibit strong nonlinear absorption.
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页码：1045 / 1048
页数：4
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