Volume 95 Issue 13 | p. 5 | News of The Week
Issue Date: March 27, 2017 | Web Date: March 23, 2017

Nanomachines wind and unwind polymers

Light-powered molecular machines work in tandem to contract and expand a polymer
Department: Science & Technology
News Channels: JACS In C&EN, Nano SCENE
Keywords: nanotechnology, molecular machines, molecular motor, actuator, artificial muscle

Combining two types of light-activated molecular machines, chemists in France have created a system that winds and unwinds polymer chains, resulting in a material that contracts and expands, depending upon the wavelength of light that shines upon it. The system, developed by the University of Strasbourg’s Nicolas Giuseppone and coworkers, could lead to new types of actuators and artificial muscles.

A couple years ago, Giuseppone’s group tethered light-activated motor molecules to polymer . . .

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