Equilibrium concentration of singlet oxygen in photoreaction of reaction center/carbon nanotube bionanocomposites

Anikó Kinka, Kata Hajdu, Melinda Magyar, László Mucsi, Tibor Szabó, K. Hernádi, Endre Horváth, Arnaud Magrez, László Forró, László Nagy

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The reaction center protein is the unit in the photosynthetic organisms in which the primary events of the photoelectric energy conversion take place during photosynthesis. When the photochemistry following the excitation of the reaction center by light is oversaturated there is a large probability to form reactive oxygen species (ROS, e.g., singlet oxygen (1O2)). Because the ROS components decrease the overall yield of the photochemical energy conversion there is a considerable effort in many laboratories to find conditions to reduce these harmful compounds. The aim of our work is to create a system by using carbon nanotubes (CNTs) and RCs for efficient light-energy conversion. The role of the 1O2 that destroys the RC structure is discussed. 1,3-Diphenylisobenzofuran was used to detect the concentration of the 1O2. Although, 1O2 can be sensitized by CNTs in certain conditions, in our experiments the main sources of the 1O2 are the RCs. The concentration of the 1O2 in the equilibrium is determined by the forward sensitization and the backward deactivation processes of the components and functions of the CNT/RC composite.

Original languageEnglish
Pages (from-to)2479-2484
Number of pages6
JournalPhysica Status Solidi (B) Basic Research
Volume252
Issue number11
DOIs
Publication statusPublished - Nov 1 2015

Fingerprint

Singlet Oxygen
Carbon Nanotubes
energy conversion
Energy conversion
Carbon nanotubes
carbon nanotubes
Oxygen
oxygen
photosynthesis
Photosynthesis
Photochemical reactions
organisms
photochemical reactions
deactivation
Reactive Oxygen Species
proteins
Proteins
composite materials
Composite materials
excitation

Keywords

  • Carbon nanotube bundles
  • Reaction center protein

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Equilibrium concentration of singlet oxygen in photoreaction of reaction center/carbon nanotube bionanocomposites. / Kinka, Anikó; Hajdu, Kata; Magyar, Melinda; Mucsi, László; Szabó, Tibor; Hernádi, K.; Horváth, Endre; Magrez, Arnaud; Forró, László; Nagy, László.

In: Physica Status Solidi (B) Basic Research, Vol. 252, No. 11, 01.11.2015, p. 2479-2484.

Research output: Contribution to journalArticle

Kinka, A, Hajdu, K, Magyar, M, Mucsi, L, Szabó, T, Hernádi, K, Horváth, E, Magrez, A, Forró, L & Nagy, L 2015, 'Equilibrium concentration of singlet oxygen in photoreaction of reaction center/carbon nanotube bionanocomposites', Physica Status Solidi (B) Basic Research, vol. 252, no. 11, pp. 2479-2484. https://doi.org/10.1002/pssb.201552205
Kinka, Anikó ; Hajdu, Kata ; Magyar, Melinda ; Mucsi, László ; Szabó, Tibor ; Hernádi, K. ; Horváth, Endre ; Magrez, Arnaud ; Forró, László ; Nagy, László. / Equilibrium concentration of singlet oxygen in photoreaction of reaction center/carbon nanotube bionanocomposites. In: Physica Status Solidi (B) Basic Research. 2015 ; Vol. 252, No. 11. pp. 2479-2484.
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