Block Copolymer Assembly via Kinetic Control Export

@article{citeulike:2336380, abstract = {Block copolymers consist of two or more chemically different polymer segments, or blocks, connected by a covalent linkage. In solution, amphiphilic blocks can self-assemble as a result of energetic repulsion effects between blocks. The degree of repulsion, the lengths of the block segments, and the selectivity of the solvent primarily control the resultant assembled morphology. In an ideal situation, one would like to be able to alter the morphology that forms without having to change the chemistry of the block copolymer. Through the kinetic manipulation of charged, amphiphilic block copolymers in solution, we are able to generate different nanoscale structures with simple block copolymer chemistry. The technique relies on divalent organic counter ions and solvent mixtures to drive the organization of the block copolymers down specific pathways into complex one-dimensional structures. Block copolymers are increasingly used as templating materials; thus, the ability to control the formation of specific patterns and structures is of growing interest and applicability. 10.1126/science.1141768}, author = {Cui, Honggang and Chen, Zhiyun and Zhong, Sheng and Wooley, Karen L. and Pochan, Darrin J.}, citeulike-article-id = {2336380}, citeulike-linkout-0 = {http://dx.doi.org/10.1126/science.1141768}, citeulike-linkout-1 = {http://view.ncbi.nlm.nih.gov/pubmed/17673657}, citeulike-linkout-2 = {http://www.hubmed.org/display.cgi?uids=17673657}, day = {3}, doi = {10.1126/science.1141768}, journal = {Science}, keywords = {block-copolymers, fission, fusion, micelles}, month = {August}, number = {5838}, pages = {647--650}, posted-at = {2008-02-05 17:17:54}, priority = {2}, title = {Block Copolymer Assembly via Kinetic Control}, url = {http://dx.doi.org/10.1126/science.1141768}, volume = {317}, year = {2007} }

TY - JOUR ID - citeulike:2336380 L3 - citeulike-article-id:2336380 N2 - Block copolymers consist of two or more chemically different polymer segments, or blocks, connected by a covalent linkage. In solution, amphiphilic blocks can self-assemble as a result of energetic repulsion effects between blocks. The degree of repulsion, the lengths of the block segments, and the selectivity of the solvent primarily control the resultant assembled morphology. In an ideal situation, one would like to be able to alter the morphology that forms without having to change the chemistry of the block copolymer. Through the kinetic manipulation of charged, amphiphilic block copolymers in solution, we are able to generate different nanoscale structures with simple block copolymer chemistry. The technique relies on divalent organic counter ions and solvent mixtures to drive the organization of the block copolymers down specific pathways into complex one-dimensional structures. Block copolymers are increasingly used as templating materials; thus, the ability to control the formation of specific patterns and structures is of growing interest and applicability. 10.1126/science.1141768 IS - 5838 JF - Science EP - 650 TI - Block Copolymer Assembly via Kinetic Control VL - 317 SP - 647 KW - block-copolymers KW - fission KW - fusion KW - micelles AU - Cui, Honggang AU - Chen, Zhiyun AU - Zhong, Sheng AU - Wooley, Karen AU - Pochan, Darrin PY - 2007/08/03/ UR - http://dx.doi.org/10.1126/science.1141768 ER -