Thermoswitchable Janus Gold Nanoparticles with Stimuli-Responsive Hydrophilic Polymer Brushes

doi:10.1021/acs.langmuir.6b00562

	Thermoswitchable Janus Gold Nanoparticles with Stimuli-Responsive Hydrophilic Polymer Brushes
	Niu, Xiaoqin 2; Ran, Fen 1,2; Chen, Limei 2; Lu, Gabriella Jia-En 2; Hu, Peiguang 2; Deming, Christopher P.2; Peng, Yi 2; Rojas-Andrade, Mauricio D.2; Chen, Shaowei 2
刊名	LANGMUIR
	2016-05-03
卷号	32 期号:17 页码:4297-4304
关键词	Dendrimers Ethylene Ethylene glycol Fiber optic sensors Functional polymers Hydrophilicity Hydrophobicity Ligands Metal nanoparticles Addition-fragmentation chain transfers Conformational transitions Functionalization of nanoparticles Hydrophilic polymers Janus nanoparticles Ligand exchange reactions Nanoparticle surface Stimuli-responsive
ISSN号	0743-7463
DOI	10.1021/acs.langmuir.6b00562
英文摘要	Well-defined thermoswitchable Janus gold nanoparticles with stimuli-responsive hydrophilic polymer brushes were fabricated by combining ligand exchange reactions and the Langmuir technique. Stimuli responsive polydi(ethylene glycol) methyl ether methacrylate)vas prepared by addition fragmentation chain-transfer polymerization. The polymer brushes were then anchored onto the nanoparticle surface by interfacial ligand exchange reactions with hexanethiolate-protected gold nano particles, leading to the formation of a hydrophilic (polymer) hemisphere and a hydrophobic (hexanethiolate) one. The resulting Janus nanoparticles showed temperature-switchable wettability, hydrophobicity at high temperatures, and hydrophilicity at low temperatures, due to thermally induced conformational transition of the polymer ligands. The results further highlight the importance of interfacial engineering in the deliberate functionalization of nanoparticle materials.
资助项目	National Science Foundation[CHE-1265635] ; National Science Foundation[DMR-1409396]
WOS研究方向	Chemistry ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000375520800019
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/33698]
专题	材料科学与工程学院省部共建有色金属先进加工与再利用国家重点实验室
通讯作者	Ran, Fen; Chen, Shaowei
作者单位	1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China 2.Univ Calif Santa Cruz, Dept Chem & Biochem, 1156 High St, Santa Cruz, CA 95064 USA
推荐引用方式 GB/T 7714	Niu, Xiaoqin,Ran, Fen,Chen, Limei,et al. Thermoswitchable Janus Gold Nanoparticles with Stimuli-Responsive Hydrophilic Polymer Brushes[J]. LANGMUIR,2016,32(17):4297-4304.
APA	Niu, Xiaoqin.,Ran, Fen.,Chen, Limei.,Lu, Gabriella Jia-En.,Hu, Peiguang.,...&Chen, Shaowei.(2016).Thermoswitchable Janus Gold Nanoparticles with Stimuli-Responsive Hydrophilic Polymer Brushes.LANGMUIR,32(17),4297-4304.
MLA	Niu, Xiaoqin,et al."Thermoswitchable Janus Gold Nanoparticles with Stimuli-Responsive Hydrophilic Polymer Brushes".LANGMUIR 32.17(2016):4297-4304.