A new core of [1,2,5]-thiadiazolo-[3,4-c]-pyridine was employed for the fabrication of microporous organic polymers exhibiting a very high CO uptake of 5.8 mmol g (25.5 wt%) at 273 K and 1 bar. The presence of CO-philic active sites and microporosity confer the high uptake and superior selectivity (61) towards CO over N.
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