Abstract: In this study, SiC nanoparticles 40 nm in diameter were added to ferrocene-modified conducting polymer (Fc-PPy) films to improve the signal/noise ratio of a sensor. The increased porosity of the Fc-PPy/SiC nanocomposite film produces a larger active surface area with more active sites available for adsorption. Electrochemical deposition was used to fabricate nanocomposite films (PPy, Fc-PPy, PPy/SiC and Fc-PPy/SiC), on both QCM and interdigitated electrodes, to measure CO concentration. All nanocomposites were characterized using XRD, SEM and TEM. The grain sizes of the nanocomposites were measured to be between 100 nm and 500 nm after electrochemical polymerization coating. IDE chemiresistor sensors and QCM piezoelectric sensors were used to investigate the potential sensing mechanisms and adsorption-desorption kinetics of Fc-PPy/SiC nanocomposite films and to compare these films with bare PPy films. The sensitivity of Fc-PPy/SiC nanocomposite sensors to CO gas was significantly improved by the effects of the chemical activation of SiC catalyst nanoparticle additives and ferrocene modified conducting polymers.Abstract: In this study, SiC nanoparticles 40 nm in diameter were added to ferrocene-modified conducting polymer (Fc-PPy) films to improve the signal/noise ratio of a sensor. The increased porosity of the Fc-PPy/SiC nanocomposite film produces a larger active surface area with more active sites available for adsorption. Electrochemical deposition was used to...Show More
Abstract: Design and evaluation of new chemically nano composites towards molecular imaging of malignant tumors is being considered as a kind of medical global research interests. In the current experiment novel nano-composite based on gadolinium ions and anionic linear globular Dendrimer G2 (as biocompatible biodegradable hybrid nanomaterial grafted to folic acid was developed and biophysically assayed. The results showed a very good Magnetic Resonance (MR) relaxivity data on T2 decreasing as well as a very good cellular uptake and tolerance. The complex was found toxic with employing apoptosis as main mechanism of action on cancerous cells respectively. Based on results it could be concluded that such nano-complex may be used as novel theranostic agent in further in vivo practices in near future.Abstract: Design and evaluation of new chemically nano composites towards molecular imaging of malignant tumors is being considered as a kind of medical global research interests. In the current experiment novel nano-composite based on gadolinium ions and anionic linear globular Dendrimer G2 (as biocompatible biodegradable hybrid nanomaterial grafted to foli...Show More