Concurrent Imaging of Surface-Enhanced Raman and Mie Scattering from Built-in Nanogap Plasmonic Particles

Sunghee Lee; Jungwoo Kim; Kyungnae Baek; Nam Hoon Kim; Jerome K. Hyun; So Jung Park; Haemi Lee

doi:10.1021/acs.jpclett.1c01524

Concurrent Imaging of Surface-Enhanced Raman and Mie Scattering from Built-in Nanogap Plasmonic Particles

Sunghee Lee, Jungwoo Kim, Kyungnae Baek, Nam Hoon Kim, Jerome K. Hyun, So Jung Park, Haemi Lee

Department of Chemistry & Nanoscience

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

4 Scopus citations

Abstract

We report a bimodal imaging method that can spatially resolve and concurrently correlate SERS and background-free Mie scattering signals. By examining two types of nanoparticle assemblies with different types of plasmonic junctions, namely raspberry-like metamolecules (raspberry-MMs) containing intraparticle nanogaps and groups of Au nanocubes forming interparticle gaps, we were able to rapidly screen SERS-active particles among the entire population of nanoparticles. Ratiometric analysis of SERS/Mie scattering revealed distinct behaviors for these intra- and interparticle nanogaps. In particular, raspberry-MMs showed a high fraction of SERS-active particles with the SERS intensity essentially insensitive to the nanoparticle aggregation state and a predictable environmental dependence. In comparison, nanocube clusters exhibited highly heterogeneous SERS/Mie scattering ratios and unpredictable intensity fluctuations but higher maximum SERS intensity. This dual-imaging approach constitutes an in situ visualization tool that enables simultaneous and stoichiometric analysis of dual signals consisting of elastic and inelastic scattering, which can significantly improve the reliability of SERS measurements.

Original language	English
Pages (from-to)	5889-5896
Number of pages	8
Journal	Journal of Physical Chemistry Letters
Volume	12
DOIs	https://doi.org/10.1021/acs.jpclett.1c01524
State	Published - 2021

Bibliographical note

Funding Information:
S.-J.P. acknowledges the financial support from the National Research Foundation (NRF) of Korea (NRF-2018R1A2B3001049) and the Science Research Center (SRC) funded by NRF (NRF-2017R1A5A1015365). H.L. was supported by the NRF grant funded by MSIT (No. NRF-2019R1A2C1010514) and KRICT (No. KK2032-10). J.K.H. was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2019R1C1C1002802). Electron microscope imaging was performed with the support from the Korea Basic Science Institute (National Research Facilities and Equipment Center) grant funded by the Ministry of Education (NRF-2020R1A6C101B194). N.H.K. was supported by the National Research Council of Science & Technology (NST) grant by MSIT (No. CRC-16-01-KRICT).

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@article{92fdf2da34b442e9b986b9da820e1114,

title = "Concurrent Imaging of Surface-Enhanced Raman and Mie Scattering from Built-in Nanogap Plasmonic Particles",

abstract = "We report a bimodal imaging method that can spatially resolve and concurrently correlate SERS and background-free Mie scattering signals. By examining two types of nanoparticle assemblies with different types of plasmonic junctions, namely raspberry-like metamolecules (raspberry-MMs) containing intraparticle nanogaps and groups of Au nanocubes forming interparticle gaps, we were able to rapidly screen SERS-active particles among the entire population of nanoparticles. Ratiometric analysis of SERS/Mie scattering revealed distinct behaviors for these intra- and interparticle nanogaps. In particular, raspberry-MMs showed a high fraction of SERS-active particles with the SERS intensity essentially insensitive to the nanoparticle aggregation state and a predictable environmental dependence. In comparison, nanocube clusters exhibited highly heterogeneous SERS/Mie scattering ratios and unpredictable intensity fluctuations but higher maximum SERS intensity. This dual-imaging approach constitutes an in situ visualization tool that enables simultaneous and stoichiometric analysis of dual signals consisting of elastic and inelastic scattering, which can significantly improve the reliability of SERS measurements. ",

author = "Sunghee Lee and Jungwoo Kim and Kyungnae Baek and Kim, {Nam Hoon} and Hyun, {Jerome K.} and Park, {So Jung} and Haemi Lee",

note = "Funding Information: S.-J.P. acknowledges the financial support from the National Research Foundation (NRF) of Korea (NRF-2018R1A2B3001049) and the Science Research Center (SRC) funded by NRF (NRF-2017R1A5A1015365). H.L. was supported by the NRF grant funded by MSIT (No. NRF-2019R1A2C1010514) and KRICT (No. KK2032-10). J.K.H. was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2019R1C1C1002802). Electron microscope imaging was performed with the support from the Korea Basic Science Institute (National Research Facilities and Equipment Center) grant funded by the Ministry of Education (NRF-2020R1A6C101B194). N.H.K. was supported by the National Research Council of Science & Technology (NST) grant by MSIT (No. CRC-16-01-KRICT). Publisher Copyright: {\textcopyright} ",

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doi = "10.1021/acs.jpclett.1c01524",

language = "English",

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AU - Lee, Sunghee

AU - Kim, Jungwoo

AU - Baek, Kyungnae

AU - Kim, Nam Hoon

AU - Hyun, Jerome K.

AU - Park, So Jung

AU - Lee, Haemi

N1 - Funding Information: S.-J.P. acknowledges the financial support from the National Research Foundation (NRF) of Korea (NRF-2018R1A2B3001049) and the Science Research Center (SRC) funded by NRF (NRF-2017R1A5A1015365). H.L. was supported by the NRF grant funded by MSIT (No. NRF-2019R1A2C1010514) and KRICT (No. KK2032-10). J.K.H. was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2019R1C1C1002802). Electron microscope imaging was performed with the support from the Korea Basic Science Institute (National Research Facilities and Equipment Center) grant funded by the Ministry of Education (NRF-2020R1A6C101B194). N.H.K. was supported by the National Research Council of Science & Technology (NST) grant by MSIT (No. CRC-16-01-KRICT). Publisher Copyright: ©

PY - 2021

Y1 - 2021

N2 - We report a bimodal imaging method that can spatially resolve and concurrently correlate SERS and background-free Mie scattering signals. By examining two types of nanoparticle assemblies with different types of plasmonic junctions, namely raspberry-like metamolecules (raspberry-MMs) containing intraparticle nanogaps and groups of Au nanocubes forming interparticle gaps, we were able to rapidly screen SERS-active particles among the entire population of nanoparticles. Ratiometric analysis of SERS/Mie scattering revealed distinct behaviors for these intra- and interparticle nanogaps. In particular, raspberry-MMs showed a high fraction of SERS-active particles with the SERS intensity essentially insensitive to the nanoparticle aggregation state and a predictable environmental dependence. In comparison, nanocube clusters exhibited highly heterogeneous SERS/Mie scattering ratios and unpredictable intensity fluctuations but higher maximum SERS intensity. This dual-imaging approach constitutes an in situ visualization tool that enables simultaneous and stoichiometric analysis of dual signals consisting of elastic and inelastic scattering, which can significantly improve the reliability of SERS measurements.

AB - We report a bimodal imaging method that can spatially resolve and concurrently correlate SERS and background-free Mie scattering signals. By examining two types of nanoparticle assemblies with different types of plasmonic junctions, namely raspberry-like metamolecules (raspberry-MMs) containing intraparticle nanogaps and groups of Au nanocubes forming interparticle gaps, we were able to rapidly screen SERS-active particles among the entire population of nanoparticles. Ratiometric analysis of SERS/Mie scattering revealed distinct behaviors for these intra- and interparticle nanogaps. In particular, raspberry-MMs showed a high fraction of SERS-active particles with the SERS intensity essentially insensitive to the nanoparticle aggregation state and a predictable environmental dependence. In comparison, nanocube clusters exhibited highly heterogeneous SERS/Mie scattering ratios and unpredictable intensity fluctuations but higher maximum SERS intensity. This dual-imaging approach constitutes an in situ visualization tool that enables simultaneous and stoichiometric analysis of dual signals consisting of elastic and inelastic scattering, which can significantly improve the reliability of SERS measurements.

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SN - 1948-7185

VL - 12

SP - 5889

EP - 5896

JO - Journal of Physical Chemistry Letters

JF - Journal of Physical Chemistry Letters

ER -

Concurrent Imaging of Surface-Enhanced Raman and Mie Scattering from Built-in Nanogap Plasmonic Particles

Abstract

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