A. Sarkar et al., Solid state polymerization of diacetylenes with pi-conjugating substituents for third-order nonlinear optical properties, J MACR S PU, A36(2), 1999, pp. 211-224
Citations number
24
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
JOURNAL OF MACROMOLECULAR SCIENCE-PURE AND APPLIED CHEMISTRY
Topochemical reactivity of some conjugated diacetylenes with pi-conjugating
substituents upon exposure to gamma-radiation, UV-visible radiation and up
on thermal annealing is described. Few of the diacetylenes undergo solid st
ate polymerization to provide corresponding polydiacetylenes. The reflectan
ce spectra of the resultant polydiacetylenes showed significant backbone-si
de-group electron coupling. The third-order nonlinear susceptibility of two
of the polydiacetylenes obtained were evaluated using Maker's fringe techn
ique. The third-order nonlinear susceptibility, chi((3)) value obtained for
the two samples were in the order of 10(-11) esu for the fully polymerized
polydiacetylene films. These values are comparable to the values reported
previously for PDAs with aromatic sidegroups.