Determination of a Merocyanine J-Aggregate Structure and the Significant Contribution of the Electric Dipole Interaction to the Exciton Band Wavelength
Noritaka KatoDepartment of Physics, Waseda University, Tokyo 169-8555, JapanKazuya YuasaDepartment of Physics, Waseda University, Tokyo 169-8555, JapanTakeshi ArakiDepartment of Physics, Waseda University, Tokyo 169-8555, JapanIchiro HirosawaJapan Synchrotron Radiation Institute, Hyogo 679-5198, JapanMasugu SatoJapan Synchrotron Radiation Institute, Hyogo 679-5198, JapanNaoshi IkedaJapan Synchrotron Radiation Institute, Hyogo 679-5198, JapanKen‐ichi IimuraDepartment of Applied Chemistry, Utsunomiya University, Utsunomiya 321-8585, JapanYoshiaki UesuDepartment of Physics, Waseda University, Tokyo 169-8555, Japan
2005en
ABI
Аннотация
The molecular alignment of a merocyanine (MC) J-aggregate monolayer at the air-water interface was determined by a grazing incidence x-ray diffraction method. The obtained molecular arrangement apparently shows that the conventional formula, which accounts only for the transition dipole interaction, is not sufficient to figure out the exciton band wavelength, suggesting the importance of the electric dipole (ED) interaction. We derived a simple formula for the ED interaction energy under an extended dipole approximation and clarified the ED contribution in the MC J aggregate.
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