Formation of Gold Nanoparticles inside a Hydrogel by Multiphoton Photoreduction for Plasmonic Sensing

Research output: Contribution to journalArticleResearchpeer review

Authors

  • Keiki Muranaka
  • Takuro Niidome
  • Maria Leilani Torres-Mapa
  • Alexander Heisterkamp
  • Mitsuhiro Terakawa

Research Organisations

External Research Organisations

  • Keio University
  • Kumamoto University
  • Laser Zentrum Hannover e.V. (LZH)
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Details

Original languageEnglish
Pages (from-to)751-760
Number of pages10
JournalPLASMONICS
Volume18
Issue number2
Early online date22 Feb 2023
Publication statusPublished - Apr 2023

Abstract

Plasmonic sensing using metal nanoparticles has received considerable attention because of its high sensitivity for detection. In this study, gold nanoparticles (AuNPs) were formed near the focal point of femtosecond laser pulses inside a hydrogel containing gold chloride and glutamine for plasmonic sensing. The presence of glutamine suppressed the formation of AuNPs in the region outside of the laser focal point. The proposed method for the formation of AuNPs enables spatially selective fabrication of structures with optical properties attributed to localized surface plasmon resonance. Typical biomolecules present in sweat were detected using hydrogels with the fabricated structures. Among the biomolecules, the peaks of the absorbance spectra of the AuNPs inside hydrogels exhibited a blue shift only for urea. This result indicates that urea can be detected using hydrogels with fabricated structures. The method presented in this study facilitates spatially selective fabrication of biosensing structures inside the bulk of hydrogels.

Keywords

    Femtosecond laser, Hydrogel, Metal nanoparticles, Photoreduction, Sensing

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Biotechnology
  • Biochemistry, Genetics and Molecular Biology(all)
  • Biophysics
  • Biochemistry, Genetics and Molecular Biology(all)
  • Biochemistry

Cite this

Formation of Gold Nanoparticles inside a Hydrogel by Multiphoton Photoreduction for Plasmonic Sensing. / Muranaka, Keiki; Niidome, Takuro; Torres-Mapa, Maria Leilani et al.
In: PLASMONICS, Vol. 18, No. 2, 04.2023, p. 751-760.

Research output: Contribution to journalArticleResearchpeer review

Muranaka, K, Niidome, T, Torres-Mapa, ML, Heisterkamp, A & Terakawa, M 2023, 'Formation of Gold Nanoparticles inside a Hydrogel by Multiphoton Photoreduction for Plasmonic Sensing', PLASMONICS, vol. 18, no. 2, pp. 751-760. https://doi.org/10.1007/s11468-023-01804-1
Muranaka, K., Niidome, T., Torres-Mapa, M. L., Heisterkamp, A., & Terakawa, M. (2023). Formation of Gold Nanoparticles inside a Hydrogel by Multiphoton Photoreduction for Plasmonic Sensing. PLASMONICS, 18(2), 751-760. https://doi.org/10.1007/s11468-023-01804-1
Muranaka K, Niidome T, Torres-Mapa ML, Heisterkamp A, Terakawa M. Formation of Gold Nanoparticles inside a Hydrogel by Multiphoton Photoreduction for Plasmonic Sensing. PLASMONICS. 2023 Apr;18(2):751-760. Epub 2023 Feb 22. doi: 10.1007/s11468-023-01804-1
Muranaka, Keiki ; Niidome, Takuro ; Torres-Mapa, Maria Leilani et al. / Formation of Gold Nanoparticles inside a Hydrogel by Multiphoton Photoreduction for Plasmonic Sensing. In: PLASMONICS. 2023 ; Vol. 18, No. 2. pp. 751-760.
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abstract = "Plasmonic sensing using metal nanoparticles has received considerable attention because of its high sensitivity for detection. In this study, gold nanoparticles (AuNPs) were formed near the focal point of femtosecond laser pulses inside a hydrogel containing gold chloride and glutamine for plasmonic sensing. The presence of glutamine suppressed the formation of AuNPs in the region outside of the laser focal point. The proposed method for the formation of AuNPs enables spatially selective fabrication of structures with optical properties attributed to localized surface plasmon resonance. Typical biomolecules present in sweat were detected using hydrogels with the fabricated structures. Among the biomolecules, the peaks of the absorbance spectra of the AuNPs inside hydrogels exhibited a blue shift only for urea. This result indicates that urea can be detected using hydrogels with fabricated structures. The method presented in this study facilitates spatially selective fabrication of biosensing structures inside the bulk of hydrogels.",
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AU - Muranaka, Keiki

AU - Niidome, Takuro

AU - Torres-Mapa, Maria Leilani

AU - Heisterkamp, Alexander

AU - Terakawa, Mitsuhiro

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