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Beilstein J Nanotechnol. 2017 May 03;8:975-981. doi: 10.3762/bjnano.8.99. eCollection 2017.

Nanoantenna-assisted plasmonic enhancement of IR absorption of vibrational modes of organic molecules.

Beilstein journal of nanotechnology

Alexander G Milekhin, Olga Cherkasova, Sergei A Kuznetsov, Ilya A Milekhin, Ekatherina E Rodyakina, Alexander V Latyshev, Sreetama Banerjee, Georgeta Salvan, Dietrich R T Zahn

Affiliations

  1. A.V. Rzhanov Institute of Semiconductor Physics, Novosibirsk, 630090, Russia.
  2. Novosibirsk State University, Novosibirsk, 630090, Russia.
  3. Institute of Laser Physics of SB RAS, Novosibirsk, 630090, Russia.
  4. A.V. Rzhanov Institute of Semiconductor Physics RAS, Novosibirsk Branch "TDIAM", Lavrentiev Ave. 2/1, Novosibirsk, 630090, Russia.
  5. Semiconductor Physics, Technische Universität Chemnitz, D-09107 Chemnitz, Germany.

PMID: 28546892 PMCID: PMC5433160 DOI: 10.3762/bjnano.8.99

Abstract

Nanoantenna-assisted plasmonic enhancement of IR absorption and Raman scattering was employed for studying the vibrational modes in organic molecules. Ultrathin cobalt phthalocyanine films (3 nm) were deposited on Au nanoantenna arrays with specified structural parameters. The deposited organic films reveal the enhancement of both Raman scattering and IR absorption vibrational modes. To extend the possibility of implementing surface-enhanced infrared absorption (SEIRA) for biological applications, the detection and analysis of the steroid hormone cortisol was demonstrated.

Keywords: Raman scattering; cobalt phthalocyanine; cortisol; localized surface plasmon resonance; metal nanoantennas; surface-enhanced infrared absorption (SEIRA)

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