Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 116, Issue 14, Pages 8230-8235Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp3005376
Keywords
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Funding
- MEXT in Japan [20245001]
- Nano-Macro Materials, Devices and System Research Alliance
- Grants-in-Aid for Scientific Research [20245001] Funding Source: KAKEN
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Polarized electroabsorption spectra of the 4-N,N-dimethylamino-4'-N'-methyl-stilbazolium tosylate (DAST) microcrystal, which is well-known as an organic nonlinear optical material, were measured in decalin liquid using electric-field modulation spectroscopy. On the basis of the results, the magnitude of the electric dipole moment in the ground state of DAST microcrystals whose size was about 0.35 mu m was determined to be as large as similar to 4.5 x 10(4) D, and the magnitude of the difference in the dipole moment between the ground state and excited state was estimated to be similar to 2.5 x 10(3) D, though the local field correction was not made. The transition moment of the DAST crystal was also found to be a little affected by application of electric fields.
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