Light-harvesting bio-nanomaterial using porous silicon and photosynthetic reaction center

Kata Hajdu, Csilla Gergely, Marta Martin, L. Zimányi, Vivechana Agarwal, Gabriela Palestino, K. Hernádi, Z. Németh, László Nagy

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Porous silicon microcavity (PSiMc) structures were used to immobilize the photosynthetic reaction center (RC) purified from the purple bacterium Rhodobacter sphaeroides R-26. Two different binding methods were compared by specular reflectance measurements. Structural characterization of PSiMc was performed by scanning electron microscopy and atomic force microscopy. The activity of the immobilized RC was checked by measuring the visible absorption spectra of the externally added electron donor, mammalian cytochrome c. PSi/RC complex was found to oxidize the cytochrome c after every saturating Xe flash, indicating the accessibility of specific surface binding sites on the immobilized RC, for the external electron donor. This new type of bio-nanomaterial is considered as an excellent model for new generation applications of silicon-based electronics and biological redox systems.

Original languageEnglish
JournalNanoscale Research Letters
Volume7
DOIs
Publication statusPublished - 2012

Fingerprint

Photosynthetic Reaction Center Complex Proteins
Microcavities
Porous silicon
Cytochromes c
porous silicon
Nanostructured materials
Proteins
Electrons
Reflectometers
cytochromes
Silicon
Binding sites
Absorption spectra
Atomic force microscopy
Electronic equipment
Binding Sites
Scanning electron microscopy
visible spectrum
bacteria
flash

Keywords

  • Biophotonics
  • Nanomaterial
  • Peptide
  • Photosynthetic reaction center
  • Porous silicon functionalization

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Light-harvesting bio-nanomaterial using porous silicon and photosynthetic reaction center. / Hajdu, Kata; Gergely, Csilla; Martin, Marta; Zimányi, L.; Agarwal, Vivechana; Palestino, Gabriela; Hernádi, K.; Németh, Z.; Nagy, László.

In: Nanoscale Research Letters, Vol. 7, 2012.

Research output: Contribution to journalArticle

Hajdu, Kata ; Gergely, Csilla ; Martin, Marta ; Zimányi, L. ; Agarwal, Vivechana ; Palestino, Gabriela ; Hernádi, K. ; Németh, Z. ; Nagy, László. / Light-harvesting bio-nanomaterial using porous silicon and photosynthetic reaction center. In: Nanoscale Research Letters. 2012 ; Vol. 7.
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AU - Agarwal, Vivechana

AU - Palestino, Gabriela

AU - Hernádi, K.

AU - Németh, Z.

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