Journal article
Patterning on nonplanar substrates: Flexible honeycomb films from a range of self-assembling star copolymers
Luke A Connal, Robert Vestberg, Paul A Gurr, Craig J Hawker, Greg G Qiao
LANGMUIR | AMER CHEMICAL SOC | Published : 2008
DOI: 10.1021/la702495p
Abstract
The effect of glass transition temperature, Tg, on the self-assembly of "honeycomb" microstructures on nonplanar substrates was probed by the synthesis of a library of core cross-linked star polymers with different arm compositions. Star polymers based on poly(dimethyl siloxane), poly(ethyl acrylate), poly(methyl acrylate), poly(tert-butyl acrylate), and poly(methyl methacrylate) were synthesized by the "arm first" strategy using atom-transfer radical polymerization. Reaction conditions were optimized, and a series of high molecular weight star polymers were prepared in high yield. The glass transition temperature of the star polymers ranged from -123 to 100 degrees C which allowed the suita..
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