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Energy transfer between anthracene and p-terpheny molecules | ||
| Journal of College of Education | ||
| Article 1, Volume 0, Issue 1, 2017, Pages 131-148 | ||
| Authors | ||
| Zeyad Adnan Saleh; Hasan Jaber | ||
| Abstract | ||
| In this papers ,we study energy transfer between molecules of the organic crystals. The thin films had been perpetrated by doping anthrcene in (p-terphenyl) and record on a slide of quartz in a different concentrations starting from the 10-5M to10-6M and exited in a wavelength λex= 313nm in room temperature. Where the measurement of spectra showed these films for the transfer of energy from gust (p-t) to the host (with anthracene for fluoridation at concentrations above). The results showed a decreasing in the rate of the energy transfer which was calculated by exciton diffusion method. The decreasing has several reasons including the existence of (traps) which leads to capturing exciton energy . The other reason is the strong self-absorption of the anthracene crystal. The appearance of a sharp edge in the fluorescence spectrum of the molecule for the (p-t) indicates the existence of the strong self-absorption for the spectrum of this molecule. This absorption effects on the rate of energy transfer Also, the results showed an increasing quenching factor with the increasing concentration. | ||
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