We have studied Raman spectra of sulfur/organic copolymers, which are presently discussed as interesting candidates for cathode materials for Li-S batteries, with a particular focus on the spectral response to variations of the length of the sulfur segments. In particular, we have chosen sulfur/1,3-diisopropenylbenzene (S/DIB) copolymers, which have recently shown a promising performance in mitigating the shuttle effect during discharge.