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题名: Direct observation of nanoparticle multiple-ring pattern formation during droplet evaporation with dark-field microscopy
作者: Li, Hui1; Luo, Hao2; Zhang, Zhen3; Li, Yongjun1; Xiong, Bin1; Qiao, Chunyan1; Cao, Xuan1; Wang, Tie3; He, Yan1, 4; Jing, Guangyin2, 5
刊名: PHYSICAL CHEMISTRY CHEMICAL PHYSICS
发表日期: 2016-05-14
卷: 18, 期:18, 页:13018-13025
收录类别: SCI
英文摘要: Controllable protocols towards nanoparticle self-assembly are important for applications of functional nanomaterials. Evaporation is a simple yet effective method to realize a gold nanoparticle ordered selfassembly, but until now, little attention has been paid to viewing the corresponding assembly process. Herein, with the help of dark-field microscopy, we in situ monitored the whole dynamic process of gold nanorod (GNR) assembly as the solvent evaporated. Differently from the previous coffee-ring effect, rod-shaped hydrophilic GNRs, within certain concentrations, spontaneously assembled into a multiplering pattern on a hydrophobic substrate via droplet drying. The self-assembly mechanism is consistent with a diffusion-driven kinetics, and the influencing factors, including the GNR surface modification, the colloid concentration, the surface property of the substrate, and the shape of the nanoparticles, were systematically investigated.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/36102
Appears in Collections:活体分析化学实验室_期刊论文

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作者单位: 1.Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China
2.NW Univ Xian, Sch Phys, State Key Lab Incubat Base Photoelect Technol & F, Xian 710069, Peoples R China
3.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, Key Lab Analyt Chem Living Biosyst, Beijing 10090, Peoples R China
4.Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China
5.ESPCI Paris Tech, PMMH, 10 Rue Vauquelin, F-75231 Paris 05, France
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