A. Masaki et al., MODIFICATION OF OPTICAL-PROPERTIES OF POLYDIACETYLENES FOR NONLINEAR OPTICS, Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals, 267, 1995, pp. 15-20
In order to improve the third-order nonlinear optical properties of po
lydiacetylenes (PDAs), various types of PDAs with pi-conjugation betwe
en the main chain and pendant side groups were synthesized by crystal
engineering for solid-state polymerization. It was clearly seen the op
tical properties of PDAs could be modified by an increased of pi-elect
rons per the repeating units.