Novel monomers and polymers containing arylenevinylideneethynylene gro
ups were synthesized via the Heck reaction. The polymers were amorphou
s and soluble in common organic solvents. They showed T-g around 60 de
grees C and 5% weight loss in the region of 240-340 degrees C and unde
rwent thermal cross-linking on heating to 170-190 degrees C at the exp
ense of triple bonds. One of the polymers showed strong blue luminesce
nce with emission maxima around 380-390 and 470-480nm with excitation
at 320 nm. All polymers showed nonlinear optical susceptibility of the
third order (chi((3))) around 10(-10) esu.