表面修饰基团对金纳米颗粒非线性光学效应的影响研究

郑立思; 冯苗; 詹红兵

doi:10.7498/aps.61.054212

摘要

采用两相法分别制备一级硫醇修饰和二级十六烷基三甲基溴化铵(CTAB) 修饰的金纳米颗粒,通过透射电子显微镜和紫外-可见吸收光谱表征了其结构和线性光学性质. 采用开孔Z扫描技术,研究表面修饰对金纳米颗粒在532 nm波长激光作用下的非线性光学效应及光限幅性能的影响行为.结果表明,二级CTAB的修饰增强了颗粒在激光照射下的局域场作用, 并提高了热电子对非线性光学效应的贡献程度,从而有效地提高了金纳米颗粒的光限幅性能.

关键词:

金纳米颗粒 /
表面修饰 /
Z扫描

Abstract

Two kinds of gold nanoparticles with different surface-capping groups (Au-DT and Au-DT-CTAB), 1-dodecanthiol and cetyltrimethylammonium bromide (CTAB) are prepared by a two-phase method. Structures and linear optical properties of the materials are characterized using transmission electron microscopy and ultraviolet--visible absorption spectroscopy. The effects of surface modification on nonlinear optical (NLO) performance and optical limiting behavior of gold nanoparticles are investigated using the openZ-scan technique at a laser wavelength of 532 nm. The results show that Au-DT-CTAB shows an enhanced NLO effect in comparison with Au-DT. The secondary modification with CTAB can not only improve local field enhancement effect but also make the contribution of thermoelectrons to NLO performance of gold nanoparticles on laser irradiation.

Keywords:

作者及机构信息

1.
福州大学材料科学与工程学院, 福州 350108

基金项目: 国家自然科学基金(批准号: 51172045/E0207)和高校博士点基金(批准号: 20113514120006)资助的课题.

Authors and contacts

1.
College of Materials Science and Engineering, Fuzhou University, Fuzhou 350108, China

Funds: Project supported by the National Natural Science Foundation of China (Grant No. 51172045/E0207) and the Fund for the Doctoral Program of Higher Education of China (Grant No. 20113514120006).

参考文献

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施引文献

[1]	Zhan C L, Li D H, Zhang D Q, Xu W, Nie Y X, Zhu D B 2004Opt. Mater. 26 11
[2]	Wang P, Lu Y H, Tang L, Zhang J Y, Ming H, Xie J P, Ho F H,Chang H H, Lin H Y, Tsai D P 2004 Opt. Commun. 229 425
[3]	Shen H, Cheng B L, Lu G W, Guan D Y, Chen Z H, Yang G Z2006 J. Phys. D Appl. Phys. 39 233
[4]	Wang K, Long H, Fu M, Zhang L C, Yang G, Lu P X 2011 ActaPhys. Sin. 60 034209 (in Chinese) [王凯, 龙华, 付明, 张莉超, 杨光, 陆培祥 2011 物理学报 60 034209]
[5]	Qu S L, Zhao C J, Jiang XW, Fang G Y, Gao Y C, Zeng H D, SongY L, Qiu J R, Zhu C S, Hirao K 2003 Chem. Phys. Lett. 368 352
[6]	Wang K, Yang G, Long H, Li Y H, Dai N L, Lu P X 2008 ActaPhys. Sin. 57 3862 (in Chinese) [[王凯,杨光, 龙华, 李玉华, 戴能利, 陆培祥 2008 物理学报 57 3862]
[7]	Wang J, Blau W J 2009 Opt. A Pure Appl. Opt. 11 024001
[8]	WuWZ, Zheng Z R, Jin Q H, Yan Y X, LiuWL, Zhang J P, YangY Q, Su W H 2008 Acta Phys. Sin. 57 1177 (in Chinese) [吴文智, 郑植仁, 金钦汉, 闫玉禧, 刘伟龙,张建平, 杨延强, 苏文辉 2008 物理学报 57 1177]
[9]	Su W Y, Fu X Z, Wei K M 2001 Acta Phys. -Chim. Sin. 17 28 (inChinese) [苏文悦, 付贤智,魏可镁 2001 物理化学学报 17 28]
[10]	Fan H Y, Yang K, Boye D M, Sigmon T, Malloy K J, Xu H F,L?opez G P, Brinker C J 2004 Science 304 567
[11]	West R, Wang Y, Goodson T 2003 J. Phys. Chem. B 107 3419
[12]	Sun W F, Dai Q, Worden J G, Huo Q 2005 J. Phys. Chem. B 10920854
[13]	Gao L Z, Zhang X T, Dai S X, Li Y C, Huang Y B, Du Z L, Li TJ 2006 Acta Phys. -Chim. Sin. 20 647 (in Chinese) [高丽珍, 张兴堂, 戴树玺, 李蕴才, 黄亚彬, 杜祖亮, 李铁津 2006物理化学学报 20 647 ]
[14]	Brust M, Walker M, Bethell D, Schiffrin D J, Whyman R 1994 J.Chem. Soc. Chem. Commun. 7 801
[15]	Fan H Y, Wright A, Gabaldon J, Rodriguez A, Brinker C J, JiangY B 2006 Adv. Funct. Mater. 16 891
[16]	Sheik-Bahae M, Said A A, Wei T H, Hagan D J, van Stryland EW 1990 IEEE J. Quantum Electron 26 760
[17]	Qu S L, Gao Y C, Jiang XW, Zeng H D, Song Y L, Qiu H R, ZhuC S, Hirao K 2003 Opt. Commun. 224 321
[18]	Qu S L, Zhao C J, Gao Y C, Song Y L, Liu S T, Qiu J R, Zhu C S2005 Acta Phys. Sin. 54 139 (in Chinese) [曲士良, 赵崇军, 高亚臣, 宋瑛林, 刘树田, 邱建荣, 朱从善2005 物理学报 54 139]

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