Synthesis of Uniformly Sized Mesoporous Silver Films and Their SERS Application

Hyunsoo Lim; Dabum Kim; Goomin Kwon; Hyun Jong Kim; Jungmok You; Jeonghun Kim; Miharu Eguchi; Ashok Kumar Nanjundan; Jongbeom Na; Yusuke Yamauchi

doi:10.1021/acs.jpcc.0c07234

Synthesis of Uniformly Sized Mesoporous Silver Films and Their SERS Application

Hyunsoo Lim, Dabum Kim, Goomin Kwon, Hyun Jong Kim, Jungmok You, Jeonghun Kim, Miharu Eguchi, Ashok Kumar Nanjundan, Jongbeom Na, Yusuke Yamauchi

Department of Chemical and Biomolecular Engineering

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

32 Citations (Scopus)

Abstract

Nanostructured metal films and particles have been recently exploited as substrates for surface-enhanced Raman spectroscopy (SERS) studies because their intrinsic properties lead to substantial Raman scattering enhancement. Among metals, silver (Ag) is one of the efficient elements for SERS because of its potential for high Raman scattering enhancement and low molecular detection level. Substantial electric field enhancement takes place around the center of uniform mesopores as well as on the walls between the pores, leading to enhanced light scattering as well as SERS. However, aggregation and high surface energy, which are intrinsic to Ag structures, hamper the formation of mesoporous structures. In this study, we have successfully achieved the first synthesis of uniformly sized mesoporous silver films (MAgFs) using self-assembled polymeric micelles under controlled conditions. The synthetic conditions such as temperatures, applied potentials, and deposition times were fine-tuned to obtain the optimized mesoporous structure. The MAgF demonstrated a 10-9 M level of detection and 107 to 108 enhancement factor without any surface modification. The simple synthetic process, the potential of high performance, and a large detecting area of MAgFs enable us to realize the fabrication of a suitable SERS substrate.

Original language	English
Pages (from-to)	23730-23737
Number of pages	8
Journal	Journal of Physical Chemistry C
Volume	124
Issue number	43
DOIs	https://doi.org/10.1021/acs.jpcc.0c07234
Publication status	Published - 2020 Oct 29

Bibliographical note

Funding Information:
H.L. is supported by the Australian government research training program (RTP). This research was supported by the Korea Institute of Industrial Technology (KITECH, JE200017). This research was also supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2020R1A6A3A03039037). This work was performed in part at the Queensland node of the Australian National Fabrication Facility (ANFF-Q), a company established under the National Collaborative Research Infrastructure Strategy to provide nano- and micro-fabrication facilities for Australia’s researchers. The authors acknowledge the facilities, and the scientific and technical assistance, of the Australian Microscopy & Microanalysis Research Facility at the Centre for Microscopy and Microanalysis, The University of Queensland.

Publisher Copyright:
© 2020 American Chemical Society.

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Energy(all)
Physical and Theoretical Chemistry
Surfaces, Coatings and Films

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10.1021/acs.jpcc.0c07234

Cite this

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title = "Synthesis of Uniformly Sized Mesoporous Silver Films and Their SERS Application",

abstract = "Nanostructured metal films and particles have been recently exploited as substrates for surface-enhanced Raman spectroscopy (SERS) studies because their intrinsic properties lead to substantial Raman scattering enhancement. Among metals, silver (Ag) is one of the efficient elements for SERS because of its potential for high Raman scattering enhancement and low molecular detection level. Substantial electric field enhancement takes place around the center of uniform mesopores as well as on the walls between the pores, leading to enhanced light scattering as well as SERS. However, aggregation and high surface energy, which are intrinsic to Ag structures, hamper the formation of mesoporous structures. In this study, we have successfully achieved the first synthesis of uniformly sized mesoporous silver films (MAgFs) using self-assembled polymeric micelles under controlled conditions. The synthetic conditions such as temperatures, applied potentials, and deposition times were fine-tuned to obtain the optimized mesoporous structure. The MAgF demonstrated a 10-9 M level of detection and 107 to 108 enhancement factor without any surface modification. The simple synthetic process, the potential of high performance, and a large detecting area of MAgFs enable us to realize the fabrication of a suitable SERS substrate.",

author = "Hyunsoo Lim and Dabum Kim and Goomin Kwon and Kim, {Hyun Jong} and Jungmok You and Jeonghun Kim and Miharu Eguchi and Nanjundan, {Ashok Kumar} and Jongbeom Na and Yusuke Yamauchi",

note = "Funding Information: H.L. is supported by the Australian government research training program (RTP). This research was supported by the Korea Institute of Industrial Technology (KITECH, JE200017). This research was also supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2020R1A6A3A03039037). This work was performed in part at the Queensland node of the Australian National Fabrication Facility (ANFF-Q), a company established under the National Collaborative Research Infrastructure Strategy to provide nano- and micro-fabrication facilities for Australia{\textquoteright}s researchers. The authors acknowledge the facilities, and the scientific and technical assistance, of the Australian Microscopy & Microanalysis Research Facility at the Centre for Microscopy and Microanalysis, The University of Queensland. Publisher Copyright: {\textcopyright} 2020 American Chemical Society.",

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AU - Nanjundan, Ashok Kumar

AU - Na, Jongbeom

AU - Yamauchi, Yusuke

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N2 - Nanostructured metal films and particles have been recently exploited as substrates for surface-enhanced Raman spectroscopy (SERS) studies because their intrinsic properties lead to substantial Raman scattering enhancement. Among metals, silver (Ag) is one of the efficient elements for SERS because of its potential for high Raman scattering enhancement and low molecular detection level. Substantial electric field enhancement takes place around the center of uniform mesopores as well as on the walls between the pores, leading to enhanced light scattering as well as SERS. However, aggregation and high surface energy, which are intrinsic to Ag structures, hamper the formation of mesoporous structures. In this study, we have successfully achieved the first synthesis of uniformly sized mesoporous silver films (MAgFs) using self-assembled polymeric micelles under controlled conditions. The synthetic conditions such as temperatures, applied potentials, and deposition times were fine-tuned to obtain the optimized mesoporous structure. The MAgF demonstrated a 10-9 M level of detection and 107 to 108 enhancement factor without any surface modification. The simple synthetic process, the potential of high performance, and a large detecting area of MAgFs enable us to realize the fabrication of a suitable SERS substrate.

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Synthesis of Uniformly Sized Mesoporous Silver Films and Their SERS Application

Abstract

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All Science Journal Classification (ASJC) codes

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