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Title: Photocurrent Generation by Photosynthetic Purple Bacterial Reaction Centers Interfaced with a Porous Antimony-Doped Tin Oxide (ATO) Electrode

Authors:
 [1];  [2];  [2];  [2];  [3];  [3];  [4];  [2];  [5];  [5]
  1. Biodesign Center for Innovation in Medicine at Biodesign Institute, Arizona State University, Tempe, Arizona 85287, United States
  2. School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287-1604, United States
  3. Institute of Molecular Cell and Systems Biology, University of Glasgow, Glasgow, Scotland G12 8QQ, United Kingdom
  4. School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287-1604, United States; Biodesign Center for Molecular Design and Biomimetics at Biodesign Institute, Arizona State University, Tempe, Arizona 85287, United States
  5. Biodesign Center for Innovation in Medicine at Biodesign Institute, Arizona State University, Tempe, Arizona 85287, United States; School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287-1604, United States
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC) (United States). Photosynthetic Antenna Research Center (PARC)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1388792
DOE Contract Number:
SC0001035
Resource Type:
Journal Article
Resource Relation:
Journal Name: ACS Applied Materials and Interfaces; Journal Volume: 8; Journal Issue: 38; Related Information: PARC partners with Washington University in St. Louis (lead); University of California, Riverside; University of Glasgow, UK; Los Alamos National Laboratory; University of New Mexico; New Mexico Corsortium; North Carolina State University; Northwestern University; Oak Ridge National Laboratory; University of Pennsylvania; Sandia National Laboratories; University of Sheffield, UK
Country of Publication:
United States
Language:
English
Subject:
solar (fuels), photosynthesis (natural and artificial), biofuels (including algae and biomass), bio-inspired, charge transport, membrane, synthesis (novel materials), synthesis (self-assembly)

Citation Formats

Carey, Anne-Marie, Zhang, HaoJie, Mieritz, Daniel, Volosin, Alex, Gardiner, Alastair T., Cogdell, Richard J., Yan, Hao, Seo, Dong-Kyun, Lin, Su, and Woodbury, Neal W.. Photocurrent Generation by Photosynthetic Purple Bacterial Reaction Centers Interfaced with a Porous Antimony-Doped Tin Oxide (ATO) Electrode. United States: N. p., 2016. Web. doi:10.1021/acsami.6b07940.
Carey, Anne-Marie, Zhang, HaoJie, Mieritz, Daniel, Volosin, Alex, Gardiner, Alastair T., Cogdell, Richard J., Yan, Hao, Seo, Dong-Kyun, Lin, Su, & Woodbury, Neal W.. Photocurrent Generation by Photosynthetic Purple Bacterial Reaction Centers Interfaced with a Porous Antimony-Doped Tin Oxide (ATO) Electrode. United States. doi:10.1021/acsami.6b07940.
Carey, Anne-Marie, Zhang, HaoJie, Mieritz, Daniel, Volosin, Alex, Gardiner, Alastair T., Cogdell, Richard J., Yan, Hao, Seo, Dong-Kyun, Lin, Su, and Woodbury, Neal W.. Tue . "Photocurrent Generation by Photosynthetic Purple Bacterial Reaction Centers Interfaced with a Porous Antimony-Doped Tin Oxide (ATO) Electrode". United States. doi:10.1021/acsami.6b07940.
@article{osti_1388792,
title = {Photocurrent Generation by Photosynthetic Purple Bacterial Reaction Centers Interfaced with a Porous Antimony-Doped Tin Oxide (ATO) Electrode},
author = {Carey, Anne-Marie and Zhang, HaoJie and Mieritz, Daniel and Volosin, Alex and Gardiner, Alastair T. and Cogdell, Richard J. and Yan, Hao and Seo, Dong-Kyun and Lin, Su and Woodbury, Neal W.},
abstractNote = {},
doi = {10.1021/acsami.6b07940},
journal = {ACS Applied Materials and Interfaces},
number = 38,
volume = 8,
place = {United States},
year = {Tue Sep 13 00:00:00 EDT 2016},
month = {Tue Sep 13 00:00:00 EDT 2016}
}
  • Antimony-doped tin oxide (ATO) nanoparticles having rutile structure have been synthesized by the combustion method using citric acid (CA) as fuel and nitrate as an oxidant, the metal sources were granulated tin and Sb{sub 2}O{sub 3}. The influence of citric acid (fuel) to metal ratio on the average crystallite size, specific surface area and morphology of the nanoparticles has been investigated. X-ray diffraction showed the tin ions were reduced to elemental tin during combustion reaction. The average ATO crystallite size increased with the increase of citric acid (fuel). Powder morphology and the comparison of crystallite size and grain size showsmore » that the degree of agglomeration of the powder decreased with an increase of the ratio. The highest specific surface area was 37.5 m{sup 2}/g when the citric acid to tin ratio was about 6.« less
  • The initial step of charge separation at 10 K has been monitored with 100-fs time resolution in reaction centers from Rhodopseudomonas viridis and Rhodobacter sphaeroides as well as in reaction centers from the latter species in which one of the two monomeric bacteriochlorophyll (B) molecules has been removed by treatment with borohydride. Upon excitation at 870 nm, the absorbance changes measured at several wavelengths in the near-infrared absorption bands of the pigments, and notably at the absorption maximum of the B molecule(s), give no indication of a detectable concentration of B{sup {minus}}. Instead, the appearance of the cation radical ofmore » the dimeric primary electron donor (P) and of the bacteriopheophytin anion develops in concert with the decay of P{sup *}. An initial bleaching of the 850-nm band in reaction centers from Rhodopseudomonas viridis is consistent with an assignment of at least a large fraction of this band to the high-energy exciton component of P. Upon excitation of the B molecule(s) around 600 nm in the three types of reaction centers investigated, ultrafast energy transfer leads to the formation of P{sup *} in less than 100 fs. Under these conditions, a fast transient bleaching decaying with a 400-fs time constant is observed within the absorption band of B. This transient is also present upon preferential excitation of the bacteriopheophytins in the reaction center of Rhodopseudomonas viridis.« less
  • Fast time-resolved EPR spectroscopy is used to study electron spin polarization (ESP) in perdeuterated native, Fe{sup 2+}-containing reaction centers (RCs) of photosynthetic purple bacteria. The spin-correlated radical pair-(SCRP) model previously used to simulate ESP observed in Fe-depleted RCs is extended to include the large anisotropy arising from the magnetic interactions between Fe{sup 2+} and the reduced primary electron-acceptor quinone (Q{sub A}{sup .-}), which results in different quantization axes from the P{sup .+} and the (Q{sub A}{sup .-}Fe{sup 2+}) spins. Using spectral simulations, it is shown that the ESP spectrum is solely due to the P{sup .+} part of the spin-correlatedmore » radical pair [P{sup .+}(Q{sub A}{sup .-}Fe{sup 2+})], whereas the rapid decay of the spin-polarized signal is due to spin-lattice relaxation of the (Q{sub A}{sup .-}Fe{sup 2+}) complex. The simulations are very sensitive to the relative orientation of the g matrices of P{sup .+} and (Q{sub A}{sup .-}Fe{sup 2+}). Using orientation II of the g matrix of the oxidized primary donor P{sup .+}, the orientation of the g matrix of (Q{sub A}{sup .-}Fe{sup 2+}) is assessed. Finally, it is shown that the ESP spectrum of perdeuterated native, Fe{sup 2+}-containing RCs of Rhodopseudomonas (Rps) viridis is virtually identical to the spectrum obtained for perdeuterated native Rhodobacter (Rb.) sphaeroides. 55 refs., 5 figs., 4 tabs.« less