Knitting hypercrosslinked conjugated microporous polymers with external crosslinker

•Knitting rigid aromatic building blocks using a novel external crosslinker.•The knitting hypercrosslinked conjugated microporous polymers (HCCMPs).•HCCMPs have good luminescence properties and high electrical conductivity.

A new series of hypercrosslinked polymers were efficiently synthesized by knitting rigid aromatic building blocks using a novel external crosslinker (1,4-dimethoxybenzene, DMB) which result in a conjugated microporous structure. This knitting hypercrosslinked conjugated microporous polymers (HCCMPs) are predominantly microporous and exhibit high surface area of up to 800 m2 g−1, which also show comparable gas uptake properties reaching 1.14 wt. % H2 adsorption at 1.13 bar/77 K, and 12.72 wt. % CO2 adsorption at 1.13 bar/273 K, respectively. The extended π-conjugated structure and the three-dimensional network of π-π stacked aryl rings enable these HCCMPs good luminescence properties and high electrical conductivity.

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