4.6 Article

Third-Order Nonlinear Optical Properties and Electroabsorption Spectra of an Organic Biradical, [Naphtho[2,1-d:6,5-d′]bis([1,2,3]dithiazole)]

Journal

JOURNAL OF PHYSICAL CHEMISTRY C
Volume 118, Issue 8, Pages 4303-4308

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/jp4093332

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Funding

  1. Ministry of Education, Culture, Sports, Science, and Technology (MEXT)
  2. Japan Society for the Promotion of Science (JSPS)
  3. Grants-in-Aid for Scientific Research [23225005] Funding Source: KAKEN

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Thin films of a thiazyl biradical, naphtho[2,1-d:6,5-d']bis([1,2,3]dithiazole), abbreviated as NT, exhibit nonlinear optical properties with a large third-order nonlinear susceptibility of 2.1 X 10(-11) esu. The electroabsorption and low-temperature-absorption measurements reveal a series of degenerate electronic states, which is probably caused by the biradical character of NT. It is concluded that this degeneracy should enhance the third-order nonlinear optical properties.

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