
%0 Journal Article
%A Ferguson, J 
%A Mau, W 
%A Morris, JM 
%T Spectra of azulene dimers
%J Australian Journal of Chemistry
%D 1974/04/01
%V 27
%N 4
%P 713-719
%K 
%R https://doi.org/10.1071/CH9740713
%U https://www.publish.csiro.au/paper/CH9740713 
%X Spectra of stable dimers of azulene in an isopentane-methylcyclohexane glass at 77 K are reported. In the 700 nm region the dimer spectrum shows a marked hyperchromism and blue shift of 100 cm-1 compared to the monomer. Assumption of a stacked 'head-to-tail' configuration for the dimer and use of the dipole-dipole approximation enables the spectral shift to be accounted for. In the U.V. region, a large loss of intensity is observed for the S2 &#8592; So and S3 + So transitions and a number of new dimer bands are observed. The intensity redistribution is assigned to configuration mixing of the monomer states in the dimer. No luminescence could be observed from the dimer. 
