| Affiliation: | 1. Department of Chemistry, Faculty of Science, Saitama University, Shimo-okubo 255, Sakura-ku, Saitama, 338-8570 Japan;2. Local Spatio-Temporal Function, Frontier Research System, Institute of Physical and Chemical Research, Hirosawa 2-1, Wako, 351-0198 Japan;3. Department of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8602 Japan;4. Department of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8602 Japan Research Center for Materials, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8602 Japan |
| Abstract: | Photopolymerization of cadmium 10,12-pentacosadiynoate (CdDA) in Langmuir–Blodgett (LB) films, with the molecular packing well arranged by moderate preannealing, was investigated with near-edge X-ray absorption fine structure (NEXAFS) spectroscopy. Greenish films of polydiacetylene with an absorption wavelength of 705 nm were obtained through the photopolymerization of preannealed monomer LB films, and this resulted in an extended π-conjugate system based on the well-ordered monomer in a two-dimensional arrangement. The electronic structures of the polydiacetylenes were found to be correlated to the variation of the molecular arrangements in the films from the changes in the NEXAFS spectra through photopolymerization in the LB films. © 2004 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 42: 2329–2336, 2004 |
