Self-assembly of large-scale crack-free gold nanoparticle films using a 'drain-to-deposit' strategy

Guang Yang; Daniel T. Hallinan

doi:10.1088/0957-4484/27/22/225604

Self-assembly of large-scale crack-free gold nanoparticle films using a 'drain-to-deposit' strategy

Guang Yang, Daniel T. Hallinan

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

Gold nanoparticles are widely studied due to the ease of controlled synthesis, facile surface modification, and interesting physical properties. However, a technique for depositing large-area, crack-free monolayers on solid substrates is lacking. Herein is presented a method for accomplishing this. Spherical gold nanoparticles were synthesized as an aqueous dispersion. Assembly into monolayers and ligand exchange occurred simultaneously at an organic/aqueous interface. Then the monolayer film was deposited onto arbitrary solid substrates by slowly pumping out the lower, aqueous phase. This allowed the monolayer film (and liquid-liquid interface) to descend without significant disturbance, eventually reaching substrates contained in the aqueous phase. The resulting macroscopic quality of the films was found to be superior to films transferred by Langmuir techniques. The surface plasmon resonance and Raman enhancement of the films were evaluated and found to be uniform across the surface of each film.

Original language	English
Article number	225604
Journal	Nanotechnology
Volume	27
Issue number	22
DOIs	https://doi.org/10.1088/0957-4484/27/22/225604
State	Published - Apr 26 2016
Externally published	Yes

Funding

This research was supported by start-up funding supplied by the Florida State University and the FAMU-FSU College of Engineering. We thank Y Su and Y Xin for support in conducting TEM at the National High Magnetic Field Laboratory (TEM is supported by National Science Foundation Cooperative Agreement No. DMR-1157490 and No. DMR- 0654118 and the State of Florida). We thank J Strzalka, S Ramakrishnan, J Che and Golda C L for assistance in GISAXS experiments at Argonne National Laboratory's Advanced Photon Source, beamline 8-ID-E. Argonne National Lab's Advanced Photon Source is supported by the US Department of Energy (DOE) under Contract No. DEAC02- 06CH11357. We thank R Liang and J G Park for fruitful discussion and helping with the Raman spectroscopy. We thank B Ma and Y Tian for support in UV'vis-NIR measurement. We thank S Hellstrom for helping with grammar and spelling check.

Funders	Funder number
B Ma and Y Tian
FAMU-FSU College of Engineering
US Department of Energy
National Science Foundation	DMR- 0654118, DMR-1157490
U.S. Department of Energy	DEAC02- 06CH11357
Argonne National Laboratory
Florida State University

Keywords

GISAXS
electron microscopy
gold nanoparticle
monolayer
superlattice order
surface enhance Raman spectroscopy
surface plasmon resonance

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10.1088/0957-4484/27/22/225604

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abstract = "Gold nanoparticles are widely studied due to the ease of controlled synthesis, facile surface modification, and interesting physical properties. However, a technique for depositing large-area, crack-free monolayers on solid substrates is lacking. Herein is presented a method for accomplishing this. Spherical gold nanoparticles were synthesized as an aqueous dispersion. Assembly into monolayers and ligand exchange occurred simultaneously at an organic/aqueous interface. Then the monolayer film was deposited onto arbitrary solid substrates by slowly pumping out the lower, aqueous phase. This allowed the monolayer film (and liquid-liquid interface) to descend without significant disturbance, eventually reaching substrates contained in the aqueous phase. The resulting macroscopic quality of the films was found to be superior to films transferred by Langmuir techniques. The surface plasmon resonance and Raman enhancement of the films were evaluated and found to be uniform across the surface of each film.",

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AB - Gold nanoparticles are widely studied due to the ease of controlled synthesis, facile surface modification, and interesting physical properties. However, a technique for depositing large-area, crack-free monolayers on solid substrates is lacking. Herein is presented a method for accomplishing this. Spherical gold nanoparticles were synthesized as an aqueous dispersion. Assembly into monolayers and ligand exchange occurred simultaneously at an organic/aqueous interface. Then the monolayer film was deposited onto arbitrary solid substrates by slowly pumping out the lower, aqueous phase. This allowed the monolayer film (and liquid-liquid interface) to descend without significant disturbance, eventually reaching substrates contained in the aqueous phase. The resulting macroscopic quality of the films was found to be superior to films transferred by Langmuir techniques. The surface plasmon resonance and Raman enhancement of the films were evaluated and found to be uniform across the surface of each film.

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Self-assembly of large-scale crack-free gold nanoparticle films using a 'drain-to-deposit' strategy

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