
%0 Journal Article
%A Lyons, LE 
%A Warren, LJ 
%T Anthracene fluorescence at low temperatures.  I. Purified single crystals
%J Australian Journal of Chemistry
%D 1972/07/01
%V 25
%N 7
%P 1411-1425
%K 
%R https://doi.org/10.1071/CH9721411
%U https://www.publish.csiro.au/paper/CH9721411 
%X The low-temperature fluorescence spectrum of purified vapour-grown   anthracene single crystals is presented and the free-exciton emission distinguished from a number of defect or impurity bands present even in the purest crystals. In assigning the observed bands the symmetry of the active vibrations and the origin of background fluorescence and deformation bands are discussed. The phonon structure in the region of the fluorescence origin was found to be almost completely b-polarized. Emission of electronic origin (25103 cm-1) was too weak to be observed. Polarization ratios of the principal vibronio bands at 5.6 K are given. 
