Synthesis and properties of poly(1-naphthylacetylene) and poly(9-anthrylacetylene)

✍ Scribed by Kazunari Nanjo; S. M. Abdul Karim; Ryoji Nomura; Tatsuo Wada; Hiroyuki Sasabe; Toshio Masuda

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 176 KB
• Volume: 37
• Category: Article
• ISSN: 0887-624X
• DOI: 10.1002/(sici)1099-0518(19990201)37:3<277::aid-pola4>3.0.co;2-q

✦ Synopsis

Polymerizations of 1-naphthylacetylene (1-NA) and 9-anthrylacetylene (9-AA) by various transition metal catalysts were studied, and properties of the polymers were clarified. 1-NA polymerized with WCl 6 -based catalysts to offer dark purple polymers in good yield. Especially, a binary catalyst composed of WCl 6 and Ph 3 Bi gave a polymer with high molecular weight (M w ϭ 140ϫ10 3 ) and sufficient solubility in common solvents. The use of Mo and Rh catalysts, in contrast, resulted in the formation of insoluble red poly(1-NA)s. 9-AA gave insoluble polymers by both WCl 6 -and MoCl 5based catalysts in moderate to good yields. Copolymerization of 9-AA with 1-NA by WCl 6 -Ph 3 Bi provided a soluble copolymer which exhibited the largest third-order nonlinear optical susceptibilities ( (3) (Ϫ3; , , ) ϭ 40ϫ10 Ϫ12 ) among all the substituted polyacetylenes synthesized so far.