Selection of an Analysis Wavelength: An Interesting Example Involving Solvatochromism and the Zwitterionic Dimroth-Reichardt's Betaine ET-30 Dye

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Article on the selection of an analysis wavelength and an interesting example involving solvatochromism and the zwitterionic Dimroth-Reichardt's ET-30 betaine dye.

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2 p.

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Deng, Taihe & Acree, William E. (William Eugene) November 1, 1999.

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Article on the selection of an analysis wavelength and an interesting example involving solvatochromism and the zwitterionic Dimroth-Reichardt's ET-30 betaine dye.

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2 p.

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Abstract: A laboratory experiment is designed for studying the solvatochromic behavior of the zwitterionic Dimroth-Reichardt's betaine ET-30 dye. By spectrophotometric measurements, students determine the analysis wavelength for ET-30 dissolved in solvents of varying polarity. The five solvents selected for study give solutions that appear wine-red, violet, blue, green, and yellowish-green. Student observations afford an excellent opportunity for detailed discussions of how solvent polarity affects spectral transitions, which expands the presentation given in most analytical textbooks. Textbook presentations generally represent absorption and emission transitions in the form of a Jablonski diagram, with no discussion of solvatochromism and solvent-dependent wavelength shifts.

Reprinted with permission from the Journal of Chemical Education. Copyright 1999 American Chemical Society.

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  • Journal of Chemical Education, 1999, Washington D.C.: American Chemical Society, pp. 1555-1556

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  • Publication Title: Journal of Chemical Education
  • Volume: 76
  • Issue: 11
  • Page Start: 1555
  • Page End: 1556
  • Pages: 2
  • Peer Reviewed: Yes

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  • November 1, 1999

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  • July 9, 2015, 6:19 a.m.

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Deng, Taihe & Acree, William E. (William Eugene). Selection of an Analysis Wavelength: An Interesting Example Involving Solvatochromism and the Zwitterionic Dimroth-Reichardt's Betaine ET-30 Dye, article, November 1, 1999; [Washington, D.C.]. (digital.library.unt.edu/ark:/67531/metadc674050/: accessed December 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT College of Arts and Sciences.