Linearly-condensed polythiophenes (4 and 5) have been prepared and their characteristic aggregation behaviour as hydrogen-poor pi-compounds in the solid state has been investigated in comparison with those of the lower homologues (2 and 3); the photoelectron spectra of the series 2-5 were measured in the solid state as well as in the gas phase. For 4 the difference in the ionization energies for the gaseous (adiabatic; 7.22 eV) and solid (threshold; 4.86 eV) states is significant, giving rise to a large polarization energy (2.36 eV), which is larger than the calculated value (1.83 eV) based on the packing density and molecular polarizability. This has been interpreted in terms of the intermolecular orbital interactions in the solid state of 4. Such an interaction has not been observed in the lower homologues (2 and 3).
Kobayashi, Keiji, Phosphorus, Sulfur and Silicon and the Related Elements, 1989, vol. 43, # 1-2, p. 187 - 208
作者:Kobayashi, Keiji
DOI:——
日期:——
MAZAKI, YASUHIRO;KOBAYASHI, KEIJI, TETRAHEDRON LETT., 30,(1989) N5, C. 3315-3318