Catalytic hydrosilylation is one of the important synthetic approaches to prepare functional organosilicon polymers. Herein, a functional silicon copolymer is constructed by polyhydrosilylation reaction between a novel 3,7âbis(dimethyl silane)â10â(2âethylhexyl)â10Hâphenothiazine monomer and a neutral tetrapyrrolic macrocycle, namely, 5,5,10,15,15,20âhexamethylâ10α, 20αâbis(4â[ethynylphenyl]) calix[4]pyrrole. The asâconstructed copolymer (Mn = 9609, PDI = 2.2) is investigated as an extractant for organic anions as their tetrabutylammonium salts under interfacial aqueousâorganic (waterâchloroform) conditions. In this context, a distinctive nakedâeye colorimetric as well as fluorescence detection method is developed based on anionâdirected hydrogenâbonding interactions. This kind of color/fluorescence monitoring serves as a handy tool for rapid screening of anion extraction processes. The copolymer exhibits high selectivity toward extraction of chloride anion. This study augments the field of polycarbosilanes, poly(silylenevinylene)s in particular, allowing access to a new application window that can be further advanced with good grace in near future.