Klinger Daniel, Robb Maxwell J, Spruell Jason M, Lynd Nathaniel A, Hawker Craig J, Connal Luke A
Materials Research Laboratory and Materials Department, University of California, Santa Barbara, California USA 93106.
Department of Chemistry and Biochemistry, University of California, Santa Barbara, California USA 93106.
Polym Chem. 2013 Oct 7;4(19):5038-5042. doi: 10.1039/C3PY00750B.
Supramolecular interactions between different hydrogen-bonding guests and poly(2-vinyl pyridine)--poly (styrene) can be exploited to prepare remarkably diverse self-assembled nanostructures in dispersion from a single block copolymer (BCP). The characteristics of the BCP can be efficiently controlled by tailoring the properties of a guest which preferentially binds to the P2VP block. For example, the incorporation of a hydrophobic guest creates a hydrophobic BCP complex that forms phase separated nanoparticles upon self-assembly. Conversely, the incorporation of a hydrophilic guest results in an amphiphilic BCP complex that forms spherical micelles in water. The ability to tune the self-assembly behavior and access dramatically different nanostructures from a single BCP substrate demonstrates the exceptional versatility of the self-assembly of BCPs driven by supramolecular interactions. This approach represents a new methodology that will enable the further design of complex, responsive self-assembled nanostructures.
不同氢键客体与聚（2-乙烯基吡啶）-聚（苯乙烯）之间的超分子相互作用可用于从单一嵌段共聚物（BCP）在分散体系中制备出极为多样的自组装纳米结构。通过调整优先与P2VP嵌段结合的客体的性质，可以有效地控制BCP的特性。例如，引入疏水性客体可形成疏水性BCP复合物，该复合物在自组装时形成相分离的纳米颗粒。相反，引入亲水性客体则会产生两亲性BCP复合物，其在水中形成球形胶束。能够调节自组装行为并从单一BCP底物获得截然不同的纳米结构，这证明了由超分子相互作用驱动的BCP自组装具有非凡的多功能性。这种方法代表了一种新的方法，将能够进一步设计复杂的、响应性的自组装纳米结构。
