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Hydrogel Film@Au Nanoparticle Arrays Based on Self-Assembly Co-Assisted by Electrostatic Attraction and Hydrogel-Shrinkage for SERS Detection with Active Gaps

文献类型：期刊论文

作者Xing, Changchang1,2; Zhong, Shichuan1,2; Liu, Dilong1; Zhang, Tao1; Cao, An1,2; Zeng, Pan1,2; Men, Dandan3; Li, Cuncheng4; Cai, Weiping1; Li, Yue1
刊名ADVANCED MATERIALS INTERFACES
出版日期2021-08-31
ISSN号2196-7350
关键词active gaps amaranth electrostatic self-assembly hydrogels noble metal nanoparticle arrays surface-enhanced Raman scattering
DOI10.1002/admi.202101055
通讯作者Liu, Dilong(dlliu@issp.ac.cn) ; Men, Dandan(mendandan1999@126.com) ; Li, Yue(yueli@issp.ac.cn)
英文摘要A facile route to fabricate the hydrogel film@Au nanoparticle array composite for a surface-enhanced Raman scattering (SERS) substrate with high signal sensitivity and signal uniformity based on self-assembly co-assisted by electrostatic reaction and hydrogel-shrinkage is developed. First, the positive-charged Au nanoparticles (NPs) are self-assembled on the hydrogel film with opposite charges due to electrostatic attraction to obtain non-close-packed Au NP films on both surface sides of the hydrogel film. Then, the non-close-packed Au NP films are densified to further form hexagonal close-packed Au NP arrays on both surfaces due to the principle of minimum free energy during the hydrogel-shrinkage process. The shrinkage of hydrogel film is proved to be a key process to form hexagonal close-packed Au NP arrays by densifying the non-closely packed Au NPs achieved by electrostatically self-assembled on the hydrogel film. Constructed SERS substrate exhibits high signal sensitivity, colorant molecule amaranth with a concentration as low as 10(-8) m can be detected. This is caused by the uniform array structure with active gaps between neighboring NPs on a large area. Overall, this work paves a way to fabricate functional NP arrays on soft hydrogel, which will be highly helpful to prepare the micro/nano-structured devices.
WOS关键词SENSITIVITY ; FABRICATION ; GOLD ; BAND
资助项目National Science Fund for Distinguished Young Scholars[51825103] ; Natural Science Foundation of China[51771188] ; Natural Science Foundation of China[51861008] ; National Key Research and Development Program of China[2017YFA0207101]
WOS研究方向Chemistry ; Materials Science
语种英语
出版者WILEY
WOS记录号WOS:000691419600001
资助机构National Science Fund for Distinguished Young Scholars ; Natural Science Foundation of China ; National Key Research and Development Program of China
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/125193]  
专题中国科学院合肥物质科学研究院
通讯作者Liu, Dilong; Men, Dandan; Li, Yue
作者单位1.Chinese Acad Sci, HFIPS, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China
2.Univ Sci & Technol China, Hefei 230026, Peoples R China
3.Jiangxi Sci & Technol Normal Univ, Jiangxi Key Lab Surface Engn, Nanchang 330013, Jiangxi, Peoples R China
4.Jinan Univ, Sch Chem & Chem Engn, Jinan 250022, Shandong, Peoples R China
推荐引用方式
GB/T 7714		 Xing, Changchang,Zhong, Shichuan,Liu, Dilong,et al. Hydrogel Film@Au Nanoparticle Arrays Based on Self-Assembly Co-Assisted by Electrostatic Attraction and Hydrogel-Shrinkage for SERS Detection with Active Gaps[J]. ADVANCED MATERIALS INTERFACES,2021.
APA Xing, Changchang.,Zhong, Shichuan.,Liu, Dilong.,Zhang, Tao.,Cao, An.,...&Li, Yue.(2021).Hydrogel Film@Au Nanoparticle Arrays Based on Self-Assembly Co-Assisted by Electrostatic Attraction and Hydrogel-Shrinkage for SERS Detection with Active Gaps.ADVANCED MATERIALS INTERFACES.
MLA Xing, Changchang,et al."Hydrogel Film@Au Nanoparticle Arrays Based on Self-Assembly Co-Assisted by Electrostatic Attraction and Hydrogel-Shrinkage for SERS Detection with Active Gaps".ADVANCED MATERIALS INTERFACES (2021).

入库方式： OAI收割

来源：合肥物质科学研究院

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