Tricky Transformation: Bubbling gases tighten, then loosen, the grip of novel molecules on grime

Imagine if detergent could not only pick up grease from your clothes but also let it go on command. You might then prevent the detergent from going down the drain with the dirt.

A new class of compounds created by researchers in Canada and the United States switches between clingy and nonclingy forms upon exposure to common gases, including air.