Figure 2.

Absorption and fluorescence spectra of 4-cis (378 nm excitation) and all-trans (377 nm excitation) hexadecaheptaene in n-pentadecane at room temperature. The absorption spectra are normalized to their maximum values. Maximum absorbances of ~0.10 minimized the effects of self-absorption. The fluorescence intensities have been corrected for the different room temperature absorbances of the two samples at the excitation wavelengths. Spectra were acquired with 1-nm bandpasses.