biostudies-literatureWang BNational Natural Science Foundation of ChinaNatural Science Foundation of Heilongjiang Province5993-6001https://www.ebi.ac.uk/biostudies/studies/S-EPMC8694803biostudies-literatureUnknown11(11)The peripheral and non-peripheral substitution of 4-trifluoromethylphenoxy groups in the design of gas sensing phthalocyanine cobalt/reduced graphene oxide (rGO) hybrids with two different positions of the substituents was realized. Tetra-α(β)-(4-trifluoromethylphenoxy)phthalocyanine cobalt/reduced graphene oxide (3(4)-cF₃poPcCo/rGO) hybrids were prepared through noncovalent interaction, and were analyzed by FT-IR, UV-vis, TGA and SEM. The gas sensing performance of the cF₃poPcCo/rGO hybrid gas sensors towards ppb hydrogen sulfide (H₂S) was measured at room temperature. The results show that the 4-cF₃poPcCo/rGO sensor has better sensitivity, selectivity and reproducibility than the 3-cF₃poPcCo/rGO sensor, as well as a perfect linear reRSC advancesA highly sensitive ppb-level H₂S gas sensor based on fluorophenoxy-substituted phthalocyanine cobalt/rGO hybrids at room temperature.PMC86948032019LH032051202061Li YGuo ZGai SWang BWang XWu YfalseA highly sensitive ppb-level H₂S gas sensor based on fluorophenoxy-substituted phthalocyanine cobalt/rGO hybrids at room temperature.The peripheral and non-peripheral substitution of 4-trifluoromethylphenoxy groups in the design of gas sensing phthalocyanine cobalt/reduced graphene oxide (rGO) hybrids with two different positions of the substituents was realized. Tetra-α(β)-(4-trifluoromethylphenoxy)phthalocyanine cobalt/reduced graphene oxide (3(4)-cF₃poPcCo/rGO) hybrids were prepared through noncovalent interaction, and were analyzed by FT-IR, UV-vis, TGA and SEM. The gas sensing performance of the cF₃poPcCo/rGO hybrid gas sensors towards ppb hydrogen sulfide (H₂S) was measured at room temperature. The results show that the 4-cF₃poPcCo/rGO sensor has better sensitivity, selectivity and reproducibility than the 3-cF₃poPcCo/rGO sensor, as well as a perfect linear re2021-01-01T00:00:00Z2021 Feb2025-04-25T22:55:31.254Z2025-04-06T09:14:27.31ZS-EPMC86948033542312310.1039/d0ra08832c