1.6- Heptadiyne polymer film

The linear and nonlinear optical behaviors of poly-(1,6-heptadiyne)s containing NLO chromophores was summarized in Table 22. It was found that n of the copolymers gave higher values than that of poly-76 not bearing any chromophore while the values of Amax were similar to each other. This result clearly shows the effects of incorporation of chromophore into the polymer backbone. The values of electrooptic coefficients, r33, for poled film samples of poly-77 to poly-81 by using a simple reflection technique reported by Teng et al. was measured. Table 22 shows the measured electrooptic coefficients of polymer films at... 

TT-Conjugated polymers dramatically change its electrical and electronic behavior by incorporation of small amounts of various dopants (both acceptors and donors).2 25,68,69 Poly (1,6-heptadiyne) films prepared... 

In 5 h, the polymer pellet exhibited a maximum in the conductivity and then began to decrease slowly. When film-type polymer was exposed to iodine vapor, it changed from dark violet to blue-black and the electrical conductivity increased from 10 ° Q cm to 10 Q cm . The maximum electrical conductivity of iodine-doped poly(DPDPM) is smaller than that of iodine-doped poly(l,6-heptadiyne), which is reported to have a value of 10 —10 2 Q cm . ° The activation energy for conduction was derived from the temperature, T, dependence of conductivity. For the undoped poly(DPDPM), the activation energies have... 

---