Performance of layer-by-layer deposited low dimensional building blocks of graphene-prussian blue onto graphite screen-printed electrodes as sensors for hydrogen peroxide

Controlled deposition of fullerene derivatives within a graphene template by means of a modified Langmuir-Schaefer method

“…These novel fullerene-based hybrid films are excellent candidate nanomaterials for potential application where graphene is already been studied such us gas/liquid separation [57], sensors [55,58], photovoltaics [86] or electronic devices [54]. Moreover, the different surface properties of the hybrid films are crucial for a plethora of bio-applications since the adsorption or the adhesion of cells or enzymes depends on the surface energy related to the wetting nature of the surface [87,88].…”

“…allowed to touch the air-water interface or the solution surface in a very gentle dip of max 0.5 mm below the liquid surface for 90s. After each deposition step samples were rinsed several times by dipping into ultrapure water (to eliminate any weakly attached cations or molecules that remained from the deposition steps) and dried with nitrogen flow (to avoid contaminating either the LB air-water interface or the other solutions) [44,58].…”

Green and facile electrode modification by spark discharge: Bismuth oxide-screen printed electrodes for the screening of ultra-trace Cd(II) and Pb(II)

“…20-30 s to prepare the modified SPE. Details on the fabrication of low-cost, all-graphite SPEs are given in a previously published work [13].…”

Electrochemical biosensors based on nanomodified screen-printed electrodes: Recent applications in clinical analysis

“…Biosensors based on SPEs modified with nanomaterials have been widely reported in literature [6,7]. The modification methods encompass the use of a drop casting techniques with nanomaterial dispersions by manual or ink-jet assisted deposition [8,9], the addition of nanomaterial in the ink during the SPE printing [10], the electrodeposition [11], the Langmuir-Blodgett film approach [12], and the deposition by means of the electrospray technique [13]. Among these methods, drop casting is the most used.…”

“…Another advantage during the sensor production phase is represented by the possibility of using very small volumes of solution to be applied on the electrode surface. For example, for classic SPEs it is usually sufficient (when spontaneous thiol-gold linkage is used) to cast a drop of few microliters (10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20) of the thiol-labeled oligo on the surface of the gold-ink electrode to achieve well-ordered SAMs. This is usually not possible with conventional rod gold electrodes which generally require larger volumes.…”