Far-ultraviolet (FUV) spectroscopy gives rich information about changes in the electronic states of molecules from interactions in condensed phase. We are investigated electronic states of molecules in the condensed ionic environment such as gel electrolytes, ionic liquids, and deep eutectic solvents. To measure the FUV spectra for liquid and solid nondestructively and feasibly, attenuate total reflectance (ATR) spectroscopy were developed to measure spectra of liquid, gel and solid samples in the 140-300 nm region. In this paper, we discuss about changes by interaction due to ionic environment in the electronic state of poly (ethylene glycol) (PEG) in gel electrolytes with Li salts, and deep eutectic solvents composed of acetamide and Li salts.
Yusuke Morisawa, Nami Ueno, and Kazutaka Nishikido, "Investigation for electronic states of molecules in gel and solid electrolytes using attenuated total reflectance spectroscopy in the far-UV region," Proc. SPIE 10727, UV and Higher Energy Photonics: From Materials to Applications 2018, 107270D (Presented at SPIE Nanoscience + Engineering: August 19, 2018; Published: 7 September 2018); https://doi.org/10.1117/12.2320923.
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