Wavepackets of C-C and C=C stretching modes in the ground state start to oscillate π-out-of-phase with C≡C stretching mode. All the three modes in the self-trapped states observed indicate an acetylene-like structure not a butatriene-like.
© 2004 Optical Society of America
M. Ikuta, Y. Yuasa, T. Kobayashi, T. Kimura, and H. Matsuda, "Phase analysis of vibrational wavepackets in the ground and the excited states in polydiacetylene," in 14th International Conference on Ultrafast Phenomena, Technical Digest (CD) (Optical Society of America, 2004), paper ME19.
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