University of California

Glenn H Frederickson

Edward J Kramer

Craig Jon Hawker

Guillermo C Bazan

Atsushi Hotta

Damien Montarnal

Yingdong Luo

Steve Diamanti

Vikram Khanna

Junction-functionalized block copolymers can be used in forming nanostructures. A junction-functionalized block copolymer can include a first polymer block joined to a second polymer block by a junction, where the junction includes one or more electrostatically charged moieties. The block copolymer can include a moiety of formula (I):A-J-B&#x2003;&#x2003;(I)where A is a first polymer block, B is a second polymer block, where the A block and the B block are chemically dissimilar, and J is a junction linking the A block to the B block, and including one or more electrostatically charged moieties.

Junction-functionalized block copolymers

A method of preparing a polymer having a tapered block copolymer structure. The method comprises polymerizing a first olefin monomer and a different second olefin monomer in the presence of a catalyst supporting living or quasi-living polymerization. In certain embodiments, the catalyst comprises two neutral metal complexes. In preferred embodiments, a tapered block copolymer structure is formed by adding one monomer in a single batch at the start of the polymerization reaction, and adding a second monomer throughout the course of the reaction. The present invention also provides polymers having one or more tapered block copolymer sections, and compositions based on these polymers.

Block copolyolefins possessing a tapered structure

Growing community of inventors

Santa Barbara, CA, United States of America

Glenn H Frederickson