Free-Standing 2D Janus Gold Nanoparticles Monolayer Film with Tunable Bifacial Morphologies via the Asymmetric Growth at Air Liquid Interface

doi:10.1021/acs.langmuir.9b03189

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	Free-Standing 2D Janus Gold Nanoparticles Monolayer Film with Tunable Bifacial Morphologies via the Asymmetric Growth at Air Liquid Interface
	Cheng, Qian ; Song, Liping ; Lin, Han ; Yang, Yanping ; Huang, Youju ; Su, Fengmei ; Chen, Tao
刊名	LANGMUIR
	2020
卷号	36 期号:1 页码:250-256
关键词	HIGH-PERFORMANCE NANOCRYSTALS ARRAYS
DOI	10.1021/acs.langmuir.9b03189
英文摘要	Large scaled two-dimensional free-standing monolayer films of gold nanoparticles show distinctive optical, electrical, and chem-physical propertie making them a new class of advanced plasmonic materials differing from bulk materials and individual nanoparticles in solution. The conventional 2D gold nanoparticle films usually possess symmetric structures and identical properties of gold nanoparticles on both sides. Herein, we developed an easy and efficient approach to construct a new type of free-standing 2D gold nanoparticle monolayer film with asymmetric gold nanoparticle structures and functions, called a 2D Janus gold nanoparticle film. The remarkable feature of our method is the subsequent asymmetric growth on one side of the interfacial self-assembled gold nanoparticle monolayer film at the air liquid interface. It is very easy to control the morphology of the Janus film by simply and precisely adjusting the size and shape of the gold nanoparticles on the top side, and selectively tuning the structure and composition on the bottom side of the film by growing gold nanoparticles or other noble metals such as Ag, Pt, and Pd. Unlike the conventionally prepared Janus films at solid substrate that require long-time etching and transfer procedures, other features of our method include the short time in which the interfacial self-assembly and the subsequent asymmetric growth are completed as well as the easily transferable property of the Janus film onto different substrates, such as quartz glass sheets, silicon wafers, and PDMS. The obtained Janus gold nanoparticle film shows asymmetric wettabilities, optical properties, and surface-enhanced Raman scattering (SERS) effects, which is promising for a range of potential applications in optical devices, sensors, and asymmetric catalysis.
学科主题	Chemistry ; Materials Science
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/20203]
专题	2020专题
作者单位	1.Huang, YJ (corresponding author), Hangzhou Normal Univ, Coll Mat Chem & Chem Engn, Hangzhou 311121, Zhejiang, Peoples R China. 2.Chen, T (corresponding author), Chinese Acad Sci, Zhejiang Key Lab Marine Mat & Protect Technol, Key Lab Marine Mat & Related Technol, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China. 3.Chen, T (corresponding author), Univ Chinese Acad Sci, Sch Chem Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China. 4.Huang, YJ
推荐引用方式 GB/T 7714	Cheng, Qian,Song, Liping,Lin, Han,et al. Free-Standing 2D Janus Gold Nanoparticles Monolayer Film with Tunable Bifacial Morphologies via the Asymmetric Growth at Air Liquid Interface[J]. LANGMUIR,2020,36(1):250-256.
APA	Cheng, Qian.,Song, Liping.,Lin, Han.,Yang, Yanping.,Huang, Youju.,...&Chen, Tao.(2020).Free-Standing 2D Janus Gold Nanoparticles Monolayer Film with Tunable Bifacial Morphologies via the Asymmetric Growth at Air Liquid Interface.LANGMUIR,36(1),250-256.
MLA	Cheng, Qian,et al."Free-Standing 2D Janus Gold Nanoparticles Monolayer Film with Tunable Bifacial Morphologies via the Asymmetric Growth at Air Liquid Interface".LANGMUIR 36.1(2020):250-256.