期刊
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
卷 52, 期 4, 页码 293-298出版社
WILEY
DOI: 10.1002/polb.23411
关键词
calculations; charge-transfer complex; first principles calculations; membranes; polymer electrolyte membranes; structure-property relations; visible spectroscopy
资金
- World Premier International Research Center Initiative (WPI)
- MEXT
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER)
- Kyushu University, Japan
- Advanced Low Carbon Technology Research and Development Program (ALCA), JST, Japan
- (JSPS), Japan [24750221]
- Demonstration Research on a Hydrogen-based Society, MEXT
- Grants-in-Aid for Scientific Research [24750221] Funding Source: KAKEN
The nanostructure of sulfonated polyimide (SPI)/dihydroxynaphthalene (DHN) derivative charge-transfer (CT) complex hybrid films, which are noble alternative polymer electrolyte membranes (PEMs), is determined by a combined visible spectroscopy/quantum mechanical approach. From the visible spectra of SPI/2,6-dihydroxynaphthalene (2,6-DHN) and 1,5-dihydroxynaphthalene (1,5-DHN) CT complex hybrid films, it is confirmed that these films have different maximum wavelength, although difference of the molecular structure is small. From the calculation based on the experimental result, SPI and DHNs form multiple interactions consisting of not only CT interaction, but also hydrogen bonding in multilayered structures. CT interaction between SPI and DHN defines the DHN position in the SPI matrix, with DHN sitting in the cavity formed between SPIs. The molecular structure of the CT films derived from the multiple and complex interactions can recognize small differences in the structural isomers and bring changes of the optical property. (c) 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2014, 52, 293-298
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