An AFM, XPS and electrochemical study of molecular electroactive monolayers formed by wet chemistry functionalization of H-terminated Si(100) with vinylferrocene

Zanoni, R.; Cattaruzza, Fabrizio; Coluzza, C.; Dalchiele, Enrique A.; Decker, F.; Santo, Giovanni Di; Flamini, Alberto; Funari, L.; Marrani, Andrea Giacomo

doi:10.1016/j.susc.2004.11.023

Cited by 69 publications

(64 citation statements)

References 53 publications

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“…Curve-fitting of the Fe 2p peak envelopes has been applied in order to separate Fe(II) and Fe(III) data sets. The corresponding BE and full width at half maximum (FWHM) values are consistent with our data previously reported on ferrocene derivatives anchored on Si(1 0 0) [13,19].…”

Section: Surface Characterizationsupporting

confidence: 91%

“…From the slope of the peak current vs. v plot the surface coverage of the redox centers was estimated, equal to 10 −10 mol cm −2 . This is a high value, although lower than the one obtained by direct photochemical functionalization of p-Si(1 0 0) with vinylferrocene [13]. It suggests a reasonable bi-dimensional packing of the aliphatic chains, which has to be only partially terminating with the ferrocene redox heading groups as a consequence of the "click" reaction.…”

Section: Electrochemistrymentioning

confidence: 67%

“…Previous papers by us [12,13] and other authors [14,15], however, have shown that reproducible wet-chemistry approach for establishing durable Si C bonds have been found 0013 on Si(1 0 0) surfaces with suitable electro-active species that can be attached in this way for perspective charge-storage molecular devices.…”

Section: Introductionmentioning

confidence: 99%

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Functionalization of Si(100) with ferrocene derivatives via “click” chemistry

Marrani

Dalchiele

Zanoni

et al. 2008

Electrochimica Acta

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Section: Surface Characterizationsupporting

confidence: 91%

Section: Electrochemistrymentioning

confidence: 67%

See 1 more Smart Citation

Functionalization of Si(100) with ferrocene derivatives via “click” chemistry

Marrani

Dalchiele

Zanoni

et al. 2008

Electrochimica Acta

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“…4). Considering some previous results obtained with pure and surface reacted ferrocenes [15,32], Fe2p 3/2 component at 708.0 eV can be ascribed to Fe(II) in the ferrocene complex (Table 3). According to the PXRD data, this result can be associated with the FcPSO 3 intercalated in the ZnCr LDH matrix.…”

Section: Structural Characterizationmentioning

confidence: 53%

Electrochemical Study of Anionic Ferrocene Derivatives Intercalated in Layered Double Hydroxides: Application to Glucose Amperometric Biosensors

Mousty¹,

Forano²,

Fleutot³

et al. 2009

Electroanalysis

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Layered double hydroxides (Zn 2 Cr(OH) 6 X · nH 2 O LDH) containing (3-sulfopropyl)ferrocene-carboxylate (FcPSO 3 ) and 1,1'-bis(3-sulfopropyl)ferrocene-carboxylate (Fc(PSO 3 ) 2 ) as interlayer anions (X) have been prepared by the coprecipitation method and characterized by PXRD, FTIR, SEM and XPS. The electrochemical behavior of these hybrid materials has been evaluated by cyclic voltammetry. A new amperometric biosensor based on the immobilization of glucose oxidase in ZnCr-FcPSO 3 hybrid material was presented, the intercalated anions playing the role of mediators that shuttle electrons between the FAD centers in the enzyme and the electrode surface. The performance of the resulting biosensor for glucose determination under anaerobic conditions was evaluated by chronoamperometry at 0.5 V. The sensitivity (65 mA M À1 cm À2) determined in the concentration range 10 -25 mM is higher than sensitivities reported for other glucose biosensors based on LDH host matrices.

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“…This method was performed at room temperature in contrast to another light-based method that was performed at temperatures slightly above the melting point of vinylferrocene. 8,15,16 An issue that must be addressed regarding ferroceneterminated Si is the partial oxidation of the Si substrate 1 due to its incomplete grafting with ferrocene molecules. Oxidation increases the density of the surface state on the Si surface, which in turn is detrimental to the intended function of the ferrocene molecules.…”

mentioning

confidence: 99%

Vinylferrocene Photochemical Preparation on Si(111) Surface in Different Grafting Media

et al. 2012

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Photochemical grafting of ferrocene to Si was investigated in a vinylferrocene solution in tetrahydrofuran, diethyl ether, or dibutyl ether. The grafting of vinylferrocene onto a Si(111) surface was carried out by placing a hydrogen-terminated Si(111) substrate into a vinylferrocenesolvent solution and illuminating the substrate with visible light. The samples prepared in vinylferrocenediethyl ether and vinylferrocene dibutyl ether solutions yielded ferrocene-terminated Si(111) and the oxidation states of Fe were mainly +2. On the other hand, a polymerized vinylferrocene layer was formed on the samples treated in the vinylferrocenetetrahydrofuran solution and the oxidation states of Fe were +3. In addition, the dibutyl etherprepared sample showed a cleaner surface than that of the diethyl ether-prepared sample.Ferrocene-containing monolayers on Si or Si oxide have promising applications in the construction of memory devices.

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An AFM, XPS and electrochemical study of molecular electroactive monolayers formed by wet chemistry functionalization of H-terminated Si(100) with vinylferrocene

Cited by 69 publications

References 53 publications

Functionalization of Si(100) with ferrocene derivatives via “click” chemistry

Functionalization of Si(100) with ferrocene derivatives via “click” chemistry

Electrochemical Study of Anionic Ferrocene Derivatives Intercalated in Layered Double Hydroxides: Application to Glucose Amperometric Biosensors

Vinylferrocene Photochemical Preparation on Si(111) Surface in Different Grafting Media

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