Inside Cover, Volume 50, Issue 10


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PDMS-b-PEG diblock copolymer brushes are grafted on a silicon substrate via a two-step photo-initiated “thiol-ene” click chemistry, as presented by Muquan Yang, Jun Mao, Wei Nie, Zhixin Dong, Dapeng Wang, Ziliang Zhao, and Xiangling Ji on page 2075. The image shows that the PDMS-b-PEG diblock copolymer brushes exhibit variable responsive behavior to different solvent treatments, i.e., “onion-like” morphologies after water treatment, pinned micelles after toluene treatment, and swollen to a smooth surface after DMF treatment. This is a new example of “thiol-ene” click chemistry used in macromolecular addition.