I. Moggio et al., VIBRATIONAL PROPERTIES OF NOVEL DIACETYLENIC MONOMERS, Journal of the Chemical Society. Perkin transactions. II (Print), (10), 1998, pp. 2249-2253
The frequency and intensity of the infrared and Raman C drop C modes h
ave been investigated for a large number of molecules. A series of sym
metrical and asymmetrical substituted diacetylenic monomers having the
carbazole group attached directly or indirectly to the diacetylenic b
ackbone have been studied in their microcrystalline or liquid state. A
qualitative assignment has been proposed and particular attention has
been given to those systems for which a peculiar behaviour of the inf
rared and Raman intensities has been observed. This behaviour is found
when the diacetylenic skeleton is directly attached to either the 9H-
carbazolyl or triethylsilyl group.