摘要
本文尝试性地建立了APC(αβ)3内内层部分具有C3群对称特性的三个β发色团之间的“三聚体”激子相互作用的模型,依据“三聚体”激子相互作用的光谱表征,通过对APC(αβ)3的吸收光谱和CD谱的解叠,分析和计算得到APC(αβ)3内β发色团之间的距离,以及在坐标中的相对位置,估算了激发能在三个激子态之间的去局域时间.
An alterative exciton model has been firstly described, where three identical β chromophores at inner of the allophycocyanin (αβ)3 disk with C3-symmetry and brought close togather and coupled by strong exciton mechanism. Meanwhile, accurate absorption and circular dichroism (CD) spectra of allophycocyanin (αβ)3、 (αβ),as well as a andβ subunits are obtained, and analyzed by deconvolution methods. The deconvolutionresults of these observed spectra togather with ths theoretical analysis of the exciton model have taken an estimate of the relative chromophore orientations of the transition dipole moments. The exciton splitting energy and the distance of adjacent βchromophores in allophycocyanin (αβ)3 have also been deduced in this paper.
出处
《发光学报》
EI
CAS
CSCD
北大核心
1994年第4期269-279,共11页
Chinese Journal of Luminescence
基金
"八五"重大攻关课题