TEMPERATURE DEPENDENCE Of THE RADIATIVE LIFETIME OF J-AGGREGATES WITH DAVYDOV SPLITTING OF THE EXCITATION BAND

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2000

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Ohio State University

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The temperature dependence of the radiative exciton lifetime $(\tau_{rad})$ of J-aggregates of $3.3^{\prime}-bis(sulffpropyl)-5.5^{\prime}$-dichloro-9-ethylthiacarbocyanine (THIATS) characterized by a Davydov splitting of the exciton band has been determined over the temperature range from 4.2 to $130K.^{a}$ The Davydov splitting of the exciton was taken into account during the calculation of the coherent length $(N_{c})$ from the values of $(\tau_{rad}$). The dependence of $(\tau_{rad}$) on temperature was analyzed. The $\tau_{rad}$ (T) of J-aggregates of THIATS can be rationalized within the framework of a 1-D excitation model.

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$^{a}$ I. G. Seheblykin, M. M. Bataiev, M. Van der Auweraer, A. G. Vitukhnovsky, Chem. Phys. Lett. 316, 37-44 (2000)
Author Institution: Lebedev Physical Institute; Laboratory for molecular Dynamics and Spectroscopy

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http://hdl.handle.net/1811/19710

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Abstracts of OSU International Symposium on Molecular Spectroscopy 2000-2009