Photoluminescence of 2,4,6-tris[4-(phenylethynyl)phenyl]-1,3,5-triazines dispersed in polymer films

✍ Scribed by Takayuki Iijima; Chi-Han Lee; Yoshiki Fujiwara; Masato Shimokawa; Hiroshi Suzuki; Kazuto Yamane; Takakazu Yamamoto

• Book ID: 104075278
• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 353 KB
• Volume: 29
• Category: Article
• ISSN: 0925-3467
• DOI: 10.1016/j.optmat.2006.10.009

✦ Synopsis

Photoluminescence of three types of 1,3,5-triazine derivatives with three kinds of diphenylacetylene side chains was investigated. They showed quantum yields higher than 46% in chloroform, and the Stokes shift (66-114 nm) in chloroform depended on the kind of the diphenylacetylene side chain. In cast films, the three compounds gave a larger Stokes shift of 132-211 nm, suggesting formation of an excimer in the solid. The 1,3,5-triazine derivatives were dispersed in films of polymers such as polystyrene and poly(vinyl acetate), and photoluminescence of the films containing the 1,3,5-triazine derivatives was investigated. Dispersion of the compound in a poly(vinyl acetate) film still gave a rather larger Stokes shift of 128-203 nm. In contrast, dispersion in polystyrene reduced the Stokes shift to about 60 nm, revealing an excellent dispersing effect of polystyrene for the compounds.