NDLI: Alkylamine capped metal nanoparticle “inks” for printable SERS substrates, electronics and broadband photodetectors

Content Provider	Royal Society of Chemistry (RSC)
Author	Polavarapu, Lakshminarayana Balapanuru, Janardhan Manga, Kiran Kumar Loh, Kian Ping Cao, Hanh Duyen Xu, Qing-Hua Yu, Kuai Ang, Priscilla Kailian
Copyright Year	2011
Abstract	We report a facile and general method for the preparation of alkylamine capped metal (Au and Ag) nanoparticle “ink” with high solubility. Using these metal nanoparticle “inks”, we have demonstrated their applications for large scale fabrication of highly efficient surface enhanced Raman scattering (SERS) substrates by a facile solution processing method. These SERS substrates can detect analytes down to a few nM. The flexible plastic SERS substrates have also been demonstrated. The annealing temperature dependent conductivity of the nanoparticle films indicated a transition temperature above which high conductivity was achieved. The transition temperature could be tailored to the plastic compatible temperatures by using proper alkylamine as the capping agent. The ultrafast electron relaxation studies of the nanoparticle films demonstrated that faster electron relaxation was observed at higher annealing temperatures due to stronger electronic coupling between the nanoparticles. The applications of these highly concentrated alkylamine capped metal nanoparticle inks for the printable electronics were demonstrated by printing the oleylamine capped gold nanoparticles ink as source and drain for the graphene field effect transistor. Furthermore, the broadband photoresponse properties of the Au and Ag nanoparticle films have been demonstrated by using visible and near-infrared lasers. These investigations demonstrate that these nanoparticle “inks” are promising for applications in printable SERS substrates, electronics, and broadband photoresponse devices.
Starting Page	2268
Ending Page	2274
Page Count	7
File Format	HTM / HTML PDF
ISSN	20403364
Volume Number	3
Issue Number	5
Journal	Nanoscale
DOI	10.1039/c0nr00972e
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Amine SERS Nanoparticle Graphene Field-effect transistor Surface-enhanced Raman spectroscopy Nucleic acid thermodynamics Oleylamine
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology

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