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Size-tunable uniform gold octahedra: fast synthesis, characterization, and plasmonic properties
Lu, Yonggang1,2; Zhang, Haibin1,2; Wu, Fan2; Liu, Hong1; Fang, Jingzhong1,2
Source PublicationRSC Advances
Volume7Issue:30Pages:18601-18608
2017
Language英语
ISSN2046-2069
AbstractA modified polyol process was developed to synthesize uniform and high-purity gold (Au) octahedra in a refluxing 1,5-pentanediol (PD) solution by introducing the cationic surfactant poly(diallyldimethylammonium) chloride (PDDA). Well-defined octahedral Au nanocrystals (NCs) with sizes ranging from 30 to 110 nm could be facilely and precisely prepared in high yield by controlling the experimental parameters. Our study indicates that the surfactant PDDA with the preferential adsorption on the {111} planes of Au nuclei plays a crucial role for the controllable synthesis of uniform octahedral Au NCs. Moreover, the size-dependent optical properties of Au nanooctahedra were systematically investigated. The surface plasmon resonance (SPR) absorption peaks were red-shifted from 536 to 613 nm with the increasing sizes. It is promising that octahedral Au NCs with the size-dependent plasmonic properties are potential candidates for a broad range of applications related to optics, metamaterial, biomedicine, and catalysis. © The Royal Society of Chemistry.
KeywordCationic surfactants - Dyes - Gold - Plasmons - Surface active agents - Surface plasmon resonance
Indexed BySCI ; Ei
Document Type期刊论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/8885
Collection轻量化中心
Affiliation1.Lightweight Optics and Advanced Materials Center, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu; 610209, China;
2.University of Chinese Academy of Sciences, Beijing; 100049, China
Recommended Citation
GB/T 7714
Lu, Yonggang,Zhang, Haibin,Wu, Fan,et al. Size-tunable uniform gold octahedra: fast synthesis, characterization, and plasmonic properties[J]. RSC Advances,2017,7(30):18601-18608.
APA Lu, Yonggang,Zhang, Haibin,Wu, Fan,Liu, Hong,&Fang, Jingzhong.(2017).Size-tunable uniform gold octahedra: fast synthesis, characterization, and plasmonic properties.RSC Advances,7(30),18601-18608.
MLA Lu, Yonggang,et al."Size-tunable uniform gold octahedra: fast synthesis, characterization, and plasmonic properties".RSC Advances 7.30(2017):18601-18608.
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