Room‐Temperature Synthesis of a Hollow Microporous Organic Polymer Bearing Activated Alkyne IR Probes for Nonradical Thiol‐yne Click‐Based Post‐Functionalization

This work shows that hollow microporous organic polymer (H‐MOP‐A) with activated internal alkynes as IR probes can be prepared by template synthesis based on acyl Sonogashira‐Hagihara coupling at room temperature. The H‐MOP‐A is a versatile platform in the main chain PSM based on nonradical thiol‐yne click reaction. Moreover, an IR peak of internal alkynes in the H‐MOP‐A is very intense and could be utilized in the monitoring of thiol‐yne click‐based main chain PSM. The functionalized H‐MOP‐A with carboxylic acids (H‐MOP‐CA) showed efficient adsorption toward Ag+ ions. The resultant H‐MOP‐CA‐Ag showed excellent performance in the CO2 fixation to α‐alkylidene cyclic compounds. A hollow microporous organic polymer bearing chemically activated alkynes (H‐MOP‐A) was prepared by an acyl Sonogashira‐Hagihara coupling‐based template synthesis at room temperature. The H‐MOP‐A showed IR‐monitorable post‐synthetic modification based on nonradical thiol‐yne click chemistry and applied to Ag(I)‐catalyzed CO2 conversion.