ADVERTISEMENT
4 /5 FREE ARTICLES LEFT THIS MONTH Remaining
Chemistry matters. Join us to get the news you need.

If you have an ACS member number, please enter it here so we can link this account to your membership. (optional)

ACS values your privacy. By submitting your information, you are gaining access to C&EN and subscribing to our weekly newsletter. We use the information you provide to make your reading experience better, and we will never sell your data to third party members.

ENJOY UNLIMITED ACCES TO C&EN

Separations

Chemistry in Pictures: Totally tubular

by Alexandra Taylor
April 27, 2018

 

This chromatography column contains nanoparticles separated by polarity. Parinaz Fathi and Fatemeh Ostadhossein, bioengineering graduate students at the University of Illinois, Urbana-Champaign, set out to separate fluorescent carbon nanoparticles of different colors, which could be useful for different applications. “The fractions will be separated based on polarity, so we start with a nonpolar solvent and then mix it with a polar solvent and gradually increase the ratio of polar to nonpolar solvent,” Fathi explains. The bulk of the nanoparticles are located in the middle circular band. The glowing bits near the bottom are silica gel and trapped air bubbles. The two grad students excited the nanoparticles in the column with an ultraviolet lamp emitting light at 365 nm. The purification yielded blue, green, and yellow nanoparticles. Fathi and Ostadhossein use these nanoparticles for their research on biological imaging.

Submitted by Parinaz Fathi and Fatemeh Ostadhossein


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


Related C&EN Content:

Chemistry in Pictures — Landscape in a column

Chemistry in Pictures — Pure color.

X

Article:

This article has been sent to the following recipient:

Leave A Comment

*Required to comment