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Raman studies of intact and sodium doped 13C-substituted poly-p-phenylene

✍ Scribed by Yukio Furukawa; Hirofumi Ohtsuka; Mitsuo Tasumi; Isao Wataru; Takaki Kanbara; Takakazu Yamamoto

Publisher: John Wiley and Sons
Year: 1993
Tongue: English
Weight: 336 KB
Volume: 24
Category: Article
ISSN: 0377-0486
DOI: 10.1002/jrs.1250240814

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✦ Synopsis

Abstract

The Raman and infrared spectra of ^13^C‐substituted poly‐p‐phenylene (PPP) and the Raman spectra of Na‐doped PPP excited at 488.0 and 1064 nm were observed and compared with the corresponding spectra for the ordinary (^12^C) polymer. ^13^C substitution is shown to be useful for characterizing not only the bands of intact PPP but also those of polarons and bipolarons generated in Na‐doped PPP. The number of Raman bands observed for bioplarons (and also for polarons) is greater than that for intact PPP. This observation is explained as the result of the loss of translational symmetry in the regions of these local excitations.

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