@article{smith_hamersky_bowman_rasmussen_spontak_2006, title={Molecularly asymmetric triblock copolymers as a single-molecule route to ordered bidisperse polymer brushes}, volume={22}, ISSN={["0743-7463"]}, DOI={10.1021/la060616n}, abstractNote={The conditions signaling the formation of bidisperse brushes in ordered block copolymers are investigated as an A(2) block is progressively grown onto an A(1)B diblock copolymer to form a series of molecularly asymmetric, isomorphic A(1)BA(2) triblock copolymers. Small-angle scattering and self-consistent field theory confirm that the microphase-ordered period decreases when the A(2) block is short relative to the A(1) block, but then increases as A(1)+A(2) bidisperse brushes develop. The mechanical properties systematically follow the spatial distribution of the A(2) block.}, number={15}, journal={LANGMUIR}, author={Smith, Steven D. and Hamersky, Mark W. and Bowman, Michelle K. and Rasmussen, Kim O. and Spontak, Richard J.}, year={2006}, month={Jul}, pages={6465–6468} }
 @article{spontak_shankar_bowman_krishnan_hamersky_samseth_bockstaller_rasmussen_2006, title={Selectivity- and size-induced segregation of molecular and nanoscale species in microphase-ordered triblock copolymers}, volume={6}, ISSN={["1530-6992"]}, DOI={10.1021/nl061205u}, abstractNote={Microphase-ordered block copolymers serve as model systems to elucidate the potential of molecular self-assembly and organic templates to fabricate functionalized polymeric materials. Both aspects are related to the incorporation of secondary species such as low-molar-mass compounds or nanoparticles within the copolymer matrices. Since the resulting properties of such functionalized copolymers critically depend on the morphology of the blend or composite, the nonrandom distribution of such inclusions within the copolymer matrix must be understood. Using a self-consistent field theoretical approach, we quantitatively evaluate the segregation and interfacial excess of low-molar-mass and nanoscale species in ordered triblock copolymers as functions of block selectivity and inclusion size. The predictions are found to agree with the morphology observed in a model triblock copolymer/nanoparticle composite, thereby demonstrating the generality of this approach. Our results suggest a wide correspondence in the structure-forming effect of molecular and nanoscale inclusions that will have implications in the design and processing of functional nanostructured polymers.}, number={9}, journal={NANO LETTERS}, author={Spontak, Richard J. and Shankar, Ravi and Bowman, Michelle K. and Krishnan, Arjun S. and Hamersky, Mark W. and Samseth, Jon and Bockstaller, Michael R. and Rasmussen, Kim O.}, year={2006}, month={Sep}, pages={2115–2120} }