Specific topological-structured polymers have been a target of long-term pursuit in synthetic polymer chemistry. Among them

polyolefins with some specific topological structures (block

graft

comb

star

etc.) are of particular interest in that they represent an important promotion of polyolefins from commodity polymers with already large volume productions and widespread applications to value-added polymers with furthered properties and even expanded usages. Given the significant progress made in recent years on both polyolefin catalysts and polymerization methodologies

the development of topological poly olefins has also been at fast-pace

with some polymers already demonstrating unique

unprecedented functionalities. This review will at first describe the status quo of general topological polyolefins development

followed by an introduction to topological polyolefins research at ICCAS where the focus is on a new approach utilizing styryl-capped polyolefins as building block to construct versatile topological polyolefin architectures.