@article{gozen_genzer_spontak_2012, title={Interfacial stabilization of bilayered nanolaminates by asymmetric block copolymers}, volume={100}, ISSN={["0003-6951"]}, DOI={10.1063/1.3692102}, abstractNote={Block copolymers are macromolecular surfactants that self-assemble into a variety of nanostructural elements or reduce the interfacial tension between incompatible polymers. Here, we examine the ability of diblock copolymers differing in composition to stabilize bilayered homopolymer nanolaminates on flat solid supports. In this arrangement, self-assembly competes with interfacial modification and, in one case, promotes destabilization of the top film. To discern the corresponding mechanism, we investigate nanolaminates with a thin copolymer layer positioned between the homopolymer layers. Stabilization commences when this middle layer is sufficiently thick so that the block that is miscible with the top layer forms a brush.}, number={10}, journal={APPLIED PHYSICS LETTERS}, author={Gozen, Arif O. and Genzer, Jan and Spontak, Richard J.}, year={2012}, month={Mar} }
 @article{gozen_zhou_roskov_shi_genzer_spontak_2011, title={Block copolymer self-organization vs. interfacial modification in bilayered thin-film laminates}, volume={7}, ISSN={["1744-6848"]}, DOI={10.1039/c0sm01169j}, abstractNote={Block copolymers remain one of the most extensively studied and utilized classes of macromolecules due to their extraordinary abilities to (i) self-assemble spontaneously into a wide variety of soft nanostructures and (ii) reduce the interfacial tension between, and thus compatibilize, immiscible polymer pairs. In bilayered thin-film laminates of immiscible homopolymers, block copolymers are similarly envisaged to stabilize such laminates. Contrary to intuition, we demonstrate that highly asymmetric block copolymers can conversely destabilize a laminate, as discerned from macroscopic dewetting behavior, due to dynamic competition between copolymer self-organization away from and enrichment at the bilayer interface. The mechanism of this counterintuitive destabilization is interrogated through complementary analysis of laminates containing mixtures of stabilizing/destabilizing diblock copolymers and time-dependent Ginzburg–Landau computer simulations. This combination of experiments and simulations reveals a systematic progression of supramolecular-level events that establish the relative importance of molecular aggregation and lateral interfacial structuring in a highly nonequilibrium environment.}, number={7}, journal={SOFT MATTER}, author={Gozen, Arif O. and Zhou, Jiajia and Roskov, Kristen E. and Shi, An-Chang and Genzer, Jan and Spontak, Richard J.}, year={2011}, pages={3268–3272} }
 @article{gozen_gaines_hamersky_maniadis_rasmussen_smith_spontak_2010, title={Controlling the phase behavior of block copolymers via sequential block growth}, volume={51}, ISSN={["1873-2291"]}, DOI={10.1016/j.polymer.2010.09.006}, abstractNote={Block copolymers remain one of the most extensively investigated classes of polymers due to their abilities to self-organize into various nanostructures and modify polymer/polymer interfaces. Despite fundamental and technological interest in these materials, only a handful of experimental phase diagrams exist due to the laborious task of preparing such diagrams. In this work, two copolymer series are each synthesized from a single macromolecule via sequential living anionic polymerization to yield molecularly asymmetric diblock and triblock copolymers systematically varying in composition. The phase behavior and morphology of these copolymers are experimentally interrogated and quantitatively compared with predictions from mean-field theories, which probe copolymer phase behavior beyond current experimental conditions.}, number={23}, journal={POLYMER}, author={Gozen, Arif O. and Gaines, Michelle K. and Hamersky, Mark W. and Maniadis, Panagiotis and Rasmussen, Kim O. and Smith, Steven D. and Spontak, Richard J.}, year={2010}, month={Oct}, pages={5304–5308} }