Around 4-6?ħ You might want to put those square color pieces from slide 3 at the top of each pair of bars. Lightness: L* _L* Hue: a* -(a*) b* -(b*) Color Difference: Euclidean Distance ΔEab* Conclude this slide with what we estimate the barely perceptible delta E to be. Lavinda et al./ Dyes and Pigments 96 (2013)

Show picture of leuco form in vat, and what the result of light exposure is (reddening of leuco solution). Stress here that it was always assumed the UV light in sunlight caused the debromination, but no systematic study has been done, other than that Japanese study which was inconclusive. Just show and refer to dianion throughout. Lavinda et al./ Dyes and Pigments 96 (2013)Ĥ “Leuco” Formation I think we agreed to leave out discussion of the dianion vs. Also, we have employed dyed carbon nanotubes as a novel surrogate for dyed fabrics, and studied their particle-size distribution by electron microscopy Source: O. We have studied the dyed fabrics by reflectance and colorimetric analyses.

We have found that wool, along with many other fabrics, dyed with indigo or MBI turns blue upon heating in water, while DBI-dyed wool turns red upon heating in water. The purpose of the research is to compare the dyeing properties of indigo, MBI, and DBI to find an explanation for the thermochromic effect (color change upon heating). Also, you might want to give some pictures showing the thermochromic effects of mbi and dbi, just for background. You should tell about the previous research, but make sure the audience knows who did it. If you give them as written here, it will sound like you studied the carbon nanotubes, etc. Are these your notes, or left over from another presentation? The notes you have here are for the previous research. Aygul Islamova, John Scalise, Derrick Claye, Ioannis Karapanagiotis, Christopher Cooksey, Sasan Karimi and Keith Ramig Department of Natural Sciences Baruch College of the City University of New York Presented By: Aygul Islamova, John Scalise May 9th, 2015ģ The date of the reference should be 2013-other slides need this change too. Add Department of Natural Sciences, Baruch College/CUNY and date of presentation. 1 The Effect of Light and Dye Composition on the Color of Dyeings with Indigo 6-Bromoindigo 6,6'-Dibromoindigo Components of Tyrian Purple Add full list of co-authors, according to the abstract you submitted.

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