Aggregation behavior in naphthalene-appended diketopyrrolopyrrole derivatives and its gas adsorption impact on surface potential

Abstract

Diketopyrrolopyrrole derivatives containing phenyl and thiophene units adorned with alkoxynaphthalene (Naph-PDPP and Naph-TDPP) were synthesized by a Suzuki cross-coupling reaction. SKP measurements were carried out upon exposure to different VOCs.

A ZIF-67 derived Co3O4 dodecahedron shaped microparticle electrode based extended gate field-effect transistor for non-enzymatic glucose detection towards the diagnosis of diabetes mellitus

“…Raster scanning of CPD was done on the area of 1.02 Â 1.02 mm 2 of the electrode with a step size of 63.5 mm. 47,48…”

Graphene Oxide based Gas Sensor for Triethylamine Detection at Room Temperature

“…The schematic illustration of SKP measurement setup is shown in figure 2a. The complete principle and working of SKP system is explained in our previous papers [18][19][20]. There are changes in CPD based on VOCs adsorption on the substrate (Fig.…”

Tribological Behavior of NiMoAl-Based Self-Lubricating Composites

“…An AC voltage, V ac (ω), with a vibrational frequency of 78.3 Hz was applied to the gold tip above the sample surface. Then, an electrostatic force, F ω , given by is sensed, when the gold tip comes near to the sample surface. The CPD was calculated by the surface potential ( V s ) which is nullified by the outer voltage ( V off ) through a feedback loop.…”

“…All the experiments were carried out at ambient temperature. Further, the obtained CPD were converted to work function by using the following eq as where 5100 is the actual work function of the gold tip in meV, CPD Au is the CPD between the gold tip and the gold reference surface, and CPD Sample is the CPD between the NiMoAl composite surfaces and the gold tip. To have an average value of work function for the better interpretation, the Kelvin probe tip scanned the edge area to the wear area (groove) on the surface of NiMoAl composites with an area of 19.36 mm 2 area (raster scan), and the relative variation in the CPD was measured.…”