TY - JOUR
T1 - Filling the Green Gap of a Megadalton Photosystem i Complex by Conjugation of Organic Dyes
AU - Gordiichuk, Pavlo I.
AU - Rimmerman, Dolev
AU - Paul, Avishek
AU - Gautier, Daniel A.
AU - Gruszka, Agnieszka
AU - Saller, Manfred
AU - De Vries, Jan Willem
AU - Wetzelaer, Gert Jan A.H.
AU - Manca, Marianna
AU - Gomulya, Widianta
AU - Matmor, Maayan
AU - Gloukhikh, Ekaterina
AU - Loznik, Mark
AU - Ashkenasy, Nurit
AU - Blom, Paul W.M.
AU - Rögner, Matthias
AU - Loi, Maria Antonietta
AU - Richter, Shachar
AU - Herrmann, Andreas
N1 - Publisher Copyright:
© 2015 American Chemical Society.
PY - 2016/1/20
Y1 - 2016/1/20
N2 - Photosynthesis is Nature's major process for converting solar into chemical energy. One of the key players in this process is the multiprotein complex photosystem I (PSI) that through absorption of incident photons enables electron transfer, which makes this protein attractive for applications in bioinspired photoactive hybrid materials. However, the efficiency of PSI is still limited by its poor absorption in the green part of the solar spectrum. Inspired by the existence of natural phycobilisome light-harvesting antennae, we have widened the absorption spectrum of PSI by covalent attachment of synthetic dyes to the protein backbone. Steady-state and time-resolved photoluminescence reveal that energy transfer occurs from these dyes to PSI. It is shown by oxygen-consumption measurements that subsequent charge generation is substantially enhanced under broad and narrow band excitation. Ultimately, surface photovoltage (SPV) experiments prove the enhanced activity of dye-modified PSI even in the solid state.
AB - Photosynthesis is Nature's major process for converting solar into chemical energy. One of the key players in this process is the multiprotein complex photosystem I (PSI) that through absorption of incident photons enables electron transfer, which makes this protein attractive for applications in bioinspired photoactive hybrid materials. However, the efficiency of PSI is still limited by its poor absorption in the green part of the solar spectrum. Inspired by the existence of natural phycobilisome light-harvesting antennae, we have widened the absorption spectrum of PSI by covalent attachment of synthetic dyes to the protein backbone. Steady-state and time-resolved photoluminescence reveal that energy transfer occurs from these dyes to PSI. It is shown by oxygen-consumption measurements that subsequent charge generation is substantially enhanced under broad and narrow band excitation. Ultimately, surface photovoltage (SPV) experiments prove the enhanced activity of dye-modified PSI even in the solid state.
UR - http://www.scopus.com/inward/record.url?scp=84956825928&partnerID=8YFLogxK
U2 - 10.1021/acs.bioconjchem.5b00583
DO - 10.1021/acs.bioconjchem.5b00583
M3 - Article
AN - SCOPUS:84956825928
SN - 1043-1802
VL - 27
SP - 36
EP - 41
JO - Bioconjugate Chemistry
JF - Bioconjugate Chemistry
IS - 1
ER -