Bioelectrocatalytic generation of directly readable code: harnessing cathodic current for long-term information relay

Strack, Guinevere; Luckarift, Heather R.; Nichols, Robert; Cozart, Kristofor S; Katz, Evgeny; Johnson, Glenn R.

doi:10.1039/c1cc11475a

Cited by 43 publications

(54 citation statements)

References 32 publications

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“…The correct biomolecular ''password'' introduced into the keypad lock as a sequence of biomolecular input signals resulted in the activation of the biofuel cell, while all other ''wrong'' permutations of the molecular inputs preserved the ''OFF'' state of the biofuel cell. Further research directed to the increasing stability and robustness of the information-processing biocatalytic electrodes could result in many practical applications, including, for example, bioelectrocatalytic barcode generation [101].…”

Section: Discussionmentioning

confidence: 99%

Electrode Interfaces Switchable by Physical and Chemical Signals Operating as a Platform for Information Processing

Katz

2012

Molecular and Supramolecular Information Processing

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IntroductionModified electrodes functionalized with various organic monolayers and thin films attached to their conducting surfaces have found numerous applications in electrocatalysis, sensors, and fuel cells [1][2][3][4][5][6][7]. Particularly, active research was directed to the applications of modified electrodes in different bioelectrochemical systems [8,9], including biosensors [10-13] and biofuel cells [14][15][16][17]. In the past decade, different modified electrodes functionalized with signal-responsive molecules [18], polymers [19], or supramolecular complexes [20] were developed to ''switch on demand'' electrochemical properties of electrode surfaces. Their applications in switchable biosensors [21], fuel cells [22], and electrochemical systems processing information [23] have been suggested. Various physical and/or chemical signals as well as their combinations were used to switch electrochemical properties of the modified interfaces between active and inactive states for specific electrochemical, electrocatalytic, and bioelectrocatalytic reactions. Light signals (irradiation of electrodes with visible or ultraviolet light) [24-31], magnetic field applied at electrode surfaces loaded with magnetic particles or magnetic nanowires [32][33][34][35][36][37][38][39][40][41][42][43], and electrical potentials producing chemical changes at the electrode surfaces [44][45][46][47][48] were used to reversibly alternate electrochemical properties of the modified electrodes. Chemical [29,[49][50][51] or biochemical [52] signals resulting in reversible changes of the interfacial properties were also used to switch the electrode activity ON/OFF for specific electrochemical transformations. The present chapter gives an overview of different signal-responsive electrochemical interfaces, emphasizing the importance of scaling up the complexity of the signal-processing systems and their applications in unconventional information-processing systems.

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Section: Discussionmentioning

confidence: 99%

Electrode Interfaces Switchable by Physical and Chemical Signals Operating as a Platform for Information Processing

Katz

2012

Molecular and Supramolecular Information Processing

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“…The appearance of the cathodic current obtained in human serum is similar to the previously reported currents appearing at ca. 0.58 V vs. Ag/AgCl in other related systems (Strack et al, 2011;Halámková et al, 2012). The cell electromotive force (EMF) is the potential difference between the anode and the cathode or the voltage of the electrochemical cell.…”

Section: Resultsmentioning

confidence: 99%

“…Laccase (E.C. 1.10.3.2, from Trametes versicolor) was obtained from Sigma-Aldrich and used in experiments after the purification method as described elsewhere (Strack et al, 2011). Briefly, laccase was dissolved (5 mL, 20 mg mL…”

Section: Materials and Methods Enzyme Preparationmentioning

confidence: 99%

“…In our study, the strategy of direct electrochemical communication has been successfully applied with nanostructured buckypaper composed of multi-wall CNTs (Narváez Villarrubia et al, 2011;Strack et al, 2011;Halámková et al, 2012;MacVittie and Katz, 2014). Enzymes were immobilized onto buckypaper by using a heterobifunctional cross-linker, 1-pyrenebutanoic acid succinimidyl ester (PBSE), which provides covalent binding with amino groups of protein lysine residues through the formation of amide bonds and interacts with CNTs via π-π stacking of the polyaromatic pyrenyl moieties (Strack et al, 2011).…”

Section: Güven Et Al Power Harvesting From Human Serummentioning

confidence: 99%

“…Enzymes were immobilized onto buckypaper by using a heterobifunctional cross-linker, 1-pyrenebutanoic acid succinimidyl ester (PBSE), which provides covalent binding with amino groups of protein lysine residues through the formation of amide bonds and interacts with CNTs via π-π stacking of the polyaromatic pyrenyl moieties (Strack et al, 2011). PBSE results in a random orientation of the enzyme molecules relative to the electrode surface because of the large number of amino acid groups randomly positioned in the protein structure (Katz, 1994).…”

Section: Güven Et Al Power Harvesting From Human Serummentioning

confidence: 99%

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Power Harvesting from Human Serum in Buckypaper-Based Enzymatic Biofuel Cell

et al. 2016

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The requirement for a miniature, high density, long life, and rechargeable power source is common to a vast majority of microsystems, including the implantable devices for medical applications. A model biofuel cell system operating in human serum has been studied for future applications of biomedical and implantable medical devices. Anodic and cathodic electrodes were made of carbon nanotube-buckypaper modified with PQQ-dependent glucose dehydrogenase and laccase, respectively. Modified electrodes were characterized electrochemically and assembled in a biofuel cell setup. Power density of 16.12 μW cm −2 was achieved in human serum for lower than physiological glucose concentrations. Increasing the glucose concentration and biofuel cell temperature caused an increase in power output leading up to 49.16 μW cm −2 .

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Hierarchical Materials Architectures for Enzymatic Fuel Cells

Strack¹,

Johnson²

2014

Enzymatic Fuel Cells

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Bioelectrocatalytic generation of directly readable code: harnessing cathodic current for long-term information relay

Cited by 43 publications

References 32 publications

Electrode Interfaces Switchable by Physical and Chemical Signals Operating as a Platform for Information Processing

Electrode Interfaces Switchable by Physical and Chemical Signals Operating as a Platform for Information Processing

Power Harvesting from Human Serum in Buckypaper-Based Enzymatic Biofuel Cell

Hierarchical Materials Architectures for Enzymatic Fuel Cells

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