Abstract
A study of the spectroscopy and photochemistry of crystalline 9-cyanoanthracene is reported. This crystal gives rise to excimer emission; at 77 K the excimer has a lifetime of 160 ±5 ns and the emission spectrum is of gaussian shape. There is, prior to reaction, transfer of excitation energy by a process occurring at the excimer-exciton level and involving an activation energy of about 420 cm-1. Radiationless deactivation of the excimer involves an activation energy of 660 cm-1. These experimental observations are in good agreement with the predictions of theories based on the model of strong exciton-phonon coupling. The photoreaction occurs at specific sites which are believed to be head-to-tail defects.
Original language | English |
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Pages (from-to) | 113-121 |
Number of pages | 9 |
Journal | Chemical Physics |
Volume | 26 |
Issue number | 1 |
DOIs | |
State | Published - 9 Nov 1977 |
Externally published | Yes |