http://ift.tt/eA8V8J Researchers have used a light-sensitive iridium-palladium catalyst to make 'sequential' polymers, using visible light to change how different building blocks are combined into polymer chains. By simply switching the light on or off, they were able to realize different compositions along the polymer chain, allowing precision control over physical properties and material function. This may drastically simplify existing polymer production methods, and help overcome fundamental limits in creating new polymers.
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