摘要
The electronic singlet vertical excited states of photosynthetic reaction center(PSRC)in Rhodopseudomonas(Rps.)viridis were investigated by ZINDO and INDO/S methods.The effects of the interactions of pigment-pigment and pigment-protein on the electronic excitations were examined.The calculation results showed that the interactions of pigment-pigment and pigment-protein play an important role in reasonably assigning the experimental absorption and circular dichroism(CD)spec-tra of PSRC in Rps.virids.By comparing the theoretically computed excited states with the experi-mental absorption and CD spectra,satisfactory assignments of the experimental spectroscopic peaks were achieved.
基金
This work was supported by the National Natural Science Foundation of China(Grant Nos.20203009 and 20432010)
Hubei Province Science Foundations(Nos.2004ABC002 and 2005ABB012(a Grant for Young Distinguished Scholar))
a Grant from the Ministry of Science and Technology of China(No.2004CCA00100)
the China Scholarship Council.
