Excitonic Coupling between B and Q Transitions in Porphyrin Aggregates |
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| Authors: | ZHOU Mi JIANG Yong-Heng LU Guo-Hui GAO Shu-Qin LI Zuo-Wei |
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| Affiliation: | State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130023 |
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| Abstract: | The properties of meso-tetraphenylporphine (TPP) aggregates formed in acidic aqueous-organic solutions are investigated by UV-vis spectroscopy. According to the absorption spectra, the Q band absorption of the aggregated TPP shows red shift and intensity enhancement, and a model that includes the participation of water molecules in a porphyrin aggregation complex is proposed, then a qualitative explanation based on Gouterman's excition coupling theory is presented. Calculations including eigenenergies, eigenstates and the transition dipole strength of the coupled states are carried out. |
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| Keywords: | 32 30 32" target="_blank">Jc')">32 30 Jc 34" target="_blank">')"> 34 80 Gs |
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