Performance of interdigitated capacitive-type CO2 sensor based on polypyrrole/copper phthalocyanine nanocomposite

Enzyme-Mimics for Sensitive and Selective Steroid Metabolite Detection

“…The observation agrees with the previous research showing that the presence of doping agents in the polymerization of pyrrole yielded fiber structure on the polymer surface . Riyazi et al also demonstrated that the granular structure of polypyrrole turned into fibrous structures when polypyrrole was synthesized in the presence of CuPc . The fibrous surface morphology enlarged the surface area, which may elevate the access to active sites and improve catalytic performance.…”

“…Stretching band for out-of-plane C–H bending vibration is observed at 753 cm –1 . In contrast, both EC-P and EC-MIP films contained additional absorption bands due to Cu–N stretching (913 cm –1 ) and in-plane C–N–C bending (1173 cm –1 ) contributed by CuPcTS . A peak around 3520 cm –1 appearing only in EC-MIP can be allocated to the O–H stretching vibration of the embedded cortisol template molecules .…”

“…42 Riyazi et al also demonstrated that the granular structure of polypyrrole turned into fibrous structures when polypyrrole was synthesized in the presence of CuPc. 43 The fibrous surface morphology enlarged the surface area, which may elevate the access to active sites and improve catalytic performance. The EDX spectra of EC-P (Figure 2b) show a significant peak at 8 keV corresponding to the Cu element.…”

Advanced polymeric/inorganic nanohybrids: An integrated platform for gas sensing applications

“…Riyazi and azim examined the carbon dioxide (CO 2 ) gas sensing performance of capacitive-type nanohybrid sensor based on polypyrrole (PPy) and copper phthalocyanine (CuPc) (Riyazi and Azim Araghi, 2020). First of all, PPy was prepared from its monomer via one-step reaction of chemical oxidative polymerization by using ammonium persulfate (APS) in an acidic media (HCl).…”

“…This enhanced sensing performance of PPy-CuPc nanohybrids in the presence of CTAB was associated to the (i) porous structure of sensing layer which facilitated the diffusion of gas molecules, (ii) high surface-to-volume ratio of nano-fibrous structure of PPy, (iii) interconnected network of PPy nanofibers, and (iv) synergistic effect of properties of individual components (PPy and CuPc). Hence, this interesting approach can be utilized to produce reliable, innovative, cheaper and sensitive nanohybrid sensors based on phthalocyanine and other conducting polymers for different commercial applications (Riyazi and Azim Araghi, 2020).…”