This work presents a new optical dual sensor based on PtTFPP-containing electrospun
fibers and CsPbBr3 perovskite quantum dots (PQDs) for simultaneous detection of oxygen
(O2) and nitric oxide (NO) gases, wherein PtTFPP-containing electrospun fibers for O2
sensing was based on electrospinning process fabricated by platinum (II) meso-tetrakis
(pentafluorophenyl) porphyrin (PtTFPP) complex immobilized in cellulose acetate (CA)
matrix. CsPbBr3 PQDs were used as NO-sensitive material and coated on the surface of …

Developing efficient and reliable gas sensors for the simultaneous detection of multiple
gases is paramount in various fields, specifically healthcare, biological, and biomedical
applications. In this study, we present a novel ratiometric optical dual gas sensor based on
perovskite quantum dots (PQDs) to detect nitric oxide and oxygen simultaneously. All dye
molecules were excited using a 405 nm LED in the experimental setup. The results obtained
from the experiments reveal that both the optical NO and O2 sensors exhibit linear Stern …