Vibrational Stark effect of 9-cyanoanthracene dispersed in a poly(methyl methacrylate) film

•Infrared Stark spectra of 9-cyanoanthracene dispersed in a PMMA film were measured.•The CN stretching band showed spectral changes (vibrational Stark effect).•The Δμ value of the CN stretching vibration was obtained from the observed spectra. The vibrational Stark effect (VSE) spectra of the CN str...

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Bibliographic Details
Published inChemical physics letters Vol. 633; pp. 252 - 255
Main Authors Takashima, Kenji, Furukawa, Yukio
Format Journal Article
LanguageEnglish
Published Elsevier B.V 16.07.2015
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Summary:•Infrared Stark spectra of 9-cyanoanthracene dispersed in a PMMA film were measured.•The CN stretching band showed spectral changes (vibrational Stark effect).•The Δμ value of the CN stretching vibration was obtained from the observed spectra. The vibrational Stark effect (VSE) spectra of the CN stretching band of 9-cyanoanthracene dispersed in a poly(methyl methacrylate) (PMMA) film were measured under electric fields of 1.27–1.82MV/cm at 77K using the difference FT-IR method and a cell with a BaF2/Al/9-cyanoanthracene (10mol%):PMMA/Al structure. The changes in the electric dipole moment between the ground and the first excited states of the CN stretching mode were 0.0299±0.0003 D/f, where f is a local field correction factor. This novel polymer matrix method will be useful for measuring the VSE of low molecular weight compounds.
ISSN:0009-2614
1873-4448
DOI:10.1016/j.cplett.2015.05.068