Modification of Silicon Surface with Redox Molecules Derived from Ferrocene
نویسندگان
چکیده
Este estudo apresenta um método novo para ligar moléculas redox ativas derivadas de ferroceno à superfície de silicone monocristalino. O procedimento consiste na reação de silicone hidrogenado com brometo de alila ativado com luz branca e sua reação subseqüente com monolítio ferroceno para criar uma união covalente entre a molécula redox e a superficie do semicondutor. As camadas formadas são eletroquimicamente ativas e apresentam um processo electroquímico quasi-reversível, atribuído às moléculas de ferroceno ligadas à superfície de silicone. A análise por espectroscopia fotoeletrônica de raios-X (XPS) confirma a presença de moléculas de ferroceno na superficie de silicone.
منابع مشابه
Role of palladium in the redox electrochemistry of ferrocene monocarboxylic acid encapsulated within ORMOSIL networks.
We report herein the effect of palladium on the redox electrochemistry of ferrocene monocarboxylic acid encapsulated within an organically modified sol-gel glass network (ORMOSIL). It has been found that amount of palladium and its geometrical distribution significantly alter the redox electrochemistry of FcMCA. The geometrical distribution of palladium has been controlled by two methods: (i) p...
متن کاملElectrochemistry of Redox‐Active Guest Molecules at β‐Cyclodextrin‐Functionalized Silicon Electrodes
Functionalization of silicon-based sensing devices with self-assembled receptor monolayers offers flexibility and specificity towards the requested analyte as well as the possibility of sensor reuse. As electrical sensor performance is determined by electron transfer, we functionalized H-terminated silicon substrates with β-cyclodextrin (β-CD) molecules to investigate the electronic coupling be...
متن کاملRedox-active ferrocene-modified Cowpea mosaic virus nanoparticles.
A naturally occurring nanoparticle, the plant virus Cowpea mosaic virus, can be decorated with ferrocene derivatives, of various linker lengths with amine and carboxylate groups, on the external surface using a range of conjugation strategies. The multiple, organometallic, redox-active ferrocene moieties on the outer surface of the virus are electrochemically independent with reduction potentia...
متن کاملTopography and Charge Transfer Characteristics of Ferrocenethiols on (111) Oriented Gold Surfaces by Scanning Probe Microscopy
The high demand for computational power has driven the silicon semiconductor industry to devices with nanoscale dimensions. At the same time as further downscaling of CMOS becomes more and more costly, the properties of individual molecules which are the smallest functional units in nature become accessible. This led to high research activity in the field of self-assembled monolayers (SAM´s) [1...
متن کاملDesign, Synthesis, and Use of Peptides Derived from Human Papillomavirus L1 Protein for the Modification of Gold Electrode Surfaces by Self-Assembled Monolayers.
In order to obtain gold electrode surfaces modified with Human Papillomavirus L1 protein (HPV L1)-derived peptides, two sequences, SPINNTKPHEAR and YIK, were chosen. Both have been recognized by means of sera from patients infected with HPV. The molecules, Fc-Ahx-SPINNTKPHEAR, Ac-C-Ahx-(Fc)KSPINNTKPHEAR, Ac-C-Ahx-SPINNTKPHEAR(Fc)K, C-Ahx-SPINNTKPHEAR, and (YIK)₂-Ahx-C, were designed, synthesize...
متن کامل