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Separations

Chemistry In Pictures

Chemistry in Pictures: Wave plate

by Manny I. Fox Morone
February 9, 2023
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Most Popular in Analytical Chemistry

 

A prep TLC plate under an ultraviolet light shows a series of about a dozen differently colored, wavy bands.
Credit: Puneet Pal Singh

Under ultraviolet light, Puneet Pal Singh’s thin-layer chromatography plate revealed a swath of his reaction’s fluorescent by-products. Singh, a graduate student in Kamaljit Singh’s lab at Guru Nanak Dev University, uses prep TLC plates like this one to separate mixtures into their components. In a clean separation, each band represents a distinct chemical compound. After scraping off and analyzing each band, Singh found that the dark maroon section at the top of the plate was his purified product, a nonlinear optical material. Organic NLO materials like this one could one day useful for making devices that send signals over longer distances than possible with current technologies.

Submitted by Puneet Pal Singh

Do science. Take pictures. Win money. Enter our photo contest here.

Click here to see more Chemistry in Pictures.

Chemical & Engineering News
ISSN 0009-2347
Copyright © 2024 American Chemical Society

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