Placing Functionality Where You Want: The Allure of Sequence Control

In this issue of Chem, Xia and coworkers employ user-friendly ring-opening metathesis polymerization (ROMP) and cyclopropene monomers (CPEs) to achievemultiple single additions of CPEs along a polymer backbone. This simple yet powerful strategy greatly expands the scope of sequence-controlled materials and allows key questions to be addressed.