Multimode optoelectrochemical detection of cysteine based on an electrochromic Prussian blue electrode☆

Chen, Lin-Chi; Ho, Kuo–Chuan

doi:10.1016/j.snb.2007.09.021

Cited by 24 publications

(9 citation statements)

References 38 publications

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“…The sensitivity and detection limit values obtained were relatively better than that of other biomimicking and enzyme systems such as hemin–carbon nanofiber (0.002 A M −1 cm −2 and 2 μ M ) and hemin–carbon nanotube (0.024 A M −1 cm −2 and 30 μ M ),7d FeS nanoparticles/glutaraldehyde (0.026 A M −1 cm −2 and 4.03 μ M )9e and HRP immobilized sol–gel ceramic CNT (0.0057 A M −1 cm −2 and 12.89 μ M )17 chemically modified electrodes. Most importantly, in contrast to the previous cases with serious interference, the [MWCNT‐Fe:NH 2 ‐CHIT] showed a tolerable current signal to other biochemicals such as NO 2 − (hemin‐ and Fe 3 O 4 ‐modified electrodes),7d, 8b ascorbic acid (hemin‐ and iron(III) porphyrin‐modified electrodes),7a, 6b cysteine (Fe 3 O 4 ‐graphene oxide8c and Prussian blue9b systems) and uric acid (Figure S3, the Supporting Information) 7a. 6b…”

Section: Resultsmentioning

confidence: 71%

“…In general, for any system to biomimic the natural enzyme, it would need to fulfill the following four key criteria: 1) structural and functional similarity, 2) matching of the redox potential, 3) operational at a neutral pH conditions, and 4) high selectivity towards the target analyte. Considering the above criteria, the following representative compounds were reported as biomimics of heme peroxidase protein; porphyrins of Fe, Mn, and Co,6a–d hemin,7a and its functionalized compounds such as β‐cyclodextrin‐hemin,7b phytol‐modified hemin7c and hemin carbon nanomaterial,7d ferric 2‐hydroxy‐1‐naphthaldehyde thiosemicarbazone,8a Fe 3 O 4 magnetic particles,5, 8b, c hematin,8d prussian blue,9a, b Fe‐ meso ‐tetrakis[4‐( N ‐trimethyl)aminophenyl]‐porphophine, Fe‐ meso ‐tetrakis(4‐ N ‐methylpyridinium) porphophine,9c and FeS 9d. e Unfortunately, most of the existing compounds do not fulfill all the four biomimetic criteria.…”

Section: Introductionmentioning

confidence: 99%

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An Iron Impurity in Multiwalled Carbon Nanotube Complexes with Chitosan that Biomimics the Heme‐Peroxidase Function

Gayathri¹,

Kumar²

2013

Chemistry A European J

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A new biomimetic functional system having an impure multiwalled carbon nanotube (MWCNT-Fe)-chitosan biopolymer (H2N-CHIT) chemically modified glassy carbon electrode (GCE/[MWCNT-Fe:H2N-CHIT]) has been developed and demonstrated efficient hydrogen peroxide electrocatalytic and electrochemical sensing applications in pH 7 phosphate buffer solution (PBS). The hybrid system showed a stable and well-defined surface confined redox peak at an apparent electrode potential, E°'=-0.22 V versus Ag/AgCl with surface excess value 13.63 nmol cm(-2). Physicochemical characterizations of the hybrid by using FESEM, TEM, Raman spectroscopy, FTIR, and various control electrochemical experiments revealed that the iron impurity in the MWCNT interacted with the amino functional group of the chitosan polymer and thereby formed an unique complex-like structure ([MWCNT-Fe(III/II):NH2-CHIT]), similar to heme peroxidase with a central Fe(III/II)-redox-active site. The biomimetic system followed Michaelis-Menten-type reaction kinetics for the H2O2 reduction reaction with a K(M) value of 0.23 mM. At pH 7, amperometric i-t sensing and flow-injection analysis of H2O2 on the biomimetic system showed calibration plots in windows 5-500 and 50-2500 μM, with detection-limit values of 2.3 and 9.7 μM, respectively. Unlike most of the previously reported systems that undergo serious interferences in physiological pH, the biomimetic system displayed a remarkable tolerance to other co-existing interferants (such as cysteine, ascorbic acid, uric acid, nitrate, and nitrite), at a H2O2 detection potential similar to the peroxidase enzyme. The ability of the biosensor system to perform routine analyses was demonstrated by the detection of H2O2 present in simulated milk and clinical and cosmetic samples with appreciable recovery values.

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Section: Resultsmentioning

confidence: 71%

Section: Introductionmentioning

confidence: 99%

An Iron Impurity in Multiwalled Carbon Nanotube Complexes with Chitosan that Biomimics the Heme‐Peroxidase Function

Gayathri¹,

Kumar²

2013

Chemistry A European J

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“…[3,4] Since then, the number of reports featuring Prussian Blue as artificial peroxidase has increased continuously. [6][7][8][9] Surprisingly, despite its electrochromism and sensing capabilities, very few works report the exploitation of its electrochromism for (bio)sensing purposes, and those that do usually rely on PB electrodeposited on expensive transparent electrodes [10][11][12][13][14]. Table 1 provides a summary of key works featuring screen-printed electrodes (SPEs) modified with PB which are used for the amperometric detection of hydrogen peroxide for biosensing purposes, including this work.…”

mentioning

confidence: 99%

Electrochromic biosensors based on screen-printed Prussian Blue electrodes

Pellitero

Fremeau

Villa

et al. 2019

Sensors and Actuators B: Chemical

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Highlights We present the production of an electrochromic screen-printable paste based on Prussian Blue. These blue electrodes display excellent spectroelectrochemical reversibility and high catalytic activity towards the reduction of H2O2.  These blue electrodes enable both the electrochemical and optical quantitative determination of hydrogen peroxide.  The reported blue electrodes are highly suitable transducers for the construction of oxidase-based biosensors.  A glucose biosensor is presented to demonstrate the spectroelectrochemical capabilities of these new electrodes. AbstractPrussian Blue (PB)-modified graphite screen-printed electrodes are increasingly being used in electrochemical biosensors. However, they do not allow the observation of the electrochromism of PB. This work presents the construction of PB-based, electrochromic screen-printed biosensors. Although electrically more resistive than their graphite counterparts, these new PBbased electrodes enable both the amperometric and colorimetric detection of hydrogen peroxide.This is the first time that this has been achieved using screen-printed electrodes, and we demonstrate it spectroelectrochemically on a glucose biosensor. The biosensor electrochemical performance equals that of previously reported PB/graphite electrodes, being able to detect down to 4 µM H2O2 and 54 µM glucose. At the same time, and in contrast to PB/graphite electrodes, the new PB-based electrodes afford the optical detection of these two analytes down to 1.2 µM and 15 µM, respectively. The dynamic ranges of the glucose biosensors obtained at the PBbased electrodes are 0.1-1 mM (amperometric) and 0.025-2.5 mM (Colorimetric), matching the physiological glucose concentration range in body fluids other than blood or serum.

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“…SnO 2 has also been widely studied as electrode material because fulfils almost all the above requirements, that is why it has been used to prepare modified electrodes such as: polyaniline/ruthenium complexes for detection of dopamine 44, poly‐tetraaminophenylporphyrins for nitrate reduction and hydrazine oxidation 45, 46, poly‐ o ‐ aminophenol for ascorbic acid detection 47, Prussian blue thin film for L‐cysteine detection 48. Recently, SnO 2 has been utilized to prepare electrodes modified with different enzymes 49, 50 and conductive polymers 51.…”

Section: Introductionmentioning

confidence: 99%

Captopril Electrochemical Oxidation on Fluorine‐Doped SnO₂ Electrodes and Their Determination in Pharmaceutical Preparations

et al. 2010

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A novel application of fluorine-doped tin oxide (FTO) electrodes is reported in the present work. To this end, the captopril electrochemical oxidation mechanism on FTO electrodes at various pH and its determination in pharmaceutical preparations was investigated. Captopril oxidation on FTO proceeds at pH between 2.0 and 4.0. The study revealed that interferences for captopril determination in pharmaceutical samples was totally suppressed using these electrode materials. Voltammetric survey showed an anodic peak at about 0.375 V (Ag j AgCl) for captopril oxidation, that takes place through an EC process at pH interval 2.0-4.0. The investigation demonstrated that captopril oxidation occurs through protonated species and these electroactive species interact by adsorption on FTO electrodes, with a large heterogeneous rate constant and a mechanism involving 1H + /1e À in the global reaction. Moreover, a captopril sensor based upon FTO electrodes, with a linear range miliMolar, is proposed. These electrodes are promising candidates for the efficient electrochemical determination of captopril in pharmaceutical preparations.

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Multimode optoelectrochemical detection of cysteine based on an electrochromic Prussian blue electrode☆

Cited by 24 publications

References 38 publications

An Iron Impurity in Multiwalled Carbon Nanotube Complexes with Chitosan that Biomimics the Heme‐Peroxidase Function

An Iron Impurity in Multiwalled Carbon Nanotube Complexes with Chitosan that Biomimics the Heme‐Peroxidase Function

Electrochromic biosensors based on screen-printed Prussian Blue electrodes

Captopril Electrochemical Oxidation on Fluorine‐Doped SnO₂ Electrodes and Their Determination in Pharmaceutical Preparations

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Multimode optoelectrochemical detection of cysteine based on an electrochromic Prussian blue electrode☆

Cited by 24 publications

References 38 publications

An Iron Impurity in Multiwalled Carbon Nanotube Complexes with Chitosan that Biomimics the Heme‐Peroxidase Function

An Iron Impurity in Multiwalled Carbon Nanotube Complexes with Chitosan that Biomimics the Heme‐Peroxidase Function

Electrochromic biosensors based on screen-printed Prussian Blue electrodes

Captopril Electrochemical Oxidation on Fluorine‐Doped SnO2 Electrodes and Their Determination in Pharmaceutical Preparations

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Product

Resources

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Captopril Electrochemical Oxidation on Fluorine‐Doped SnO₂ Electrodes and Their Determination in Pharmaceutical Preparations