A graphene nanoplatelet-polydopamine molecularly imprinted biosensor for Ultratrace creatinine detection

Li, Yixuan; Luo, Liuxiong; Nie, Mengyan; Davenport, Andrew; Liu, Ying; Li, Bing; Choy, Kwang‐Leong

doi:10.1016/j.bios.2022.114638

Cited by 34 publications

(16 citation statements)

References 26 publications

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“…49 For PDA samples, after an initial mass loss of up to 100 °C due to the presence of adsorbed water molecules, a significant drop was observed at around 250−450 °C due to the pyrolysis-induced building of blocks from PDA. 50,51 Thus, the morphologic changes observed in SEM images at 300−400 °C are consistent with the mass loss observed in TGA curves. The TGA of bare paper was also inserted for comparison.…”

Section: Resultssupporting

confidence: 83%

Tuning the Chemical and Electrochemical Properties of Paper-Based Carbon Electrodes by Pyrolysis of Polydopamine

Rocha,

de Oliveira,

Bettini

et al. 2023

ACS Meas. Sci. Au

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Electrochemical paper-based analytical devices represent an important platform for portable, low-cost, affordable, and decentralized diagnostics. For this kind of application, chemical functionalization plays a pivotal role to ensure high clinical performance by tuning surface properties and the area of electrodes. However, controlling different surface properties of electrodes by using a single functionalization route is still challenging. In this work, we attempted to tune the wettability, chemical composition, and electroactive area of carbon-paper-based devices by thermally treating polydopamine (PDA) at different temperatures. PDA films were deposited onto pyrolyzed paper (PP) electrodes and thermally treated in the range of 300−1000 °C. After deposition of PDA, the surface is rich in nitrogen and oxygen, it is superhydrophilic, and it has a high electroactive area. As the temperature increases, the surface becomes hydrophobic, and the electroactive area decreases. The surface modifications were followed by Raman, X-ray photoelectron microscopy (XPS), laser scanning confocal microscopy (LSCM), contact angle, scanning electron microscopy (SEM-EDS), electrical measurements, transmission electron microscopy (TEM), and electrochemical experiments. In addition, the chemical composition of nitrogen species can be tuned on the surface. As a proof of concept, we employed PDA-treated surfaces to anchor [AuCl 4 ] − ions. After electrochemical reduction, we observed that it is possible to control the size of the nanoparticles on the surface. Our route opens a new avenue to add versatility to electrochemical interfaces in the field of paper-based electrochemical biosensors.

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Section: Resultssupporting

confidence: 83%

Tuning the Chemical and Electrochemical Properties of Paper-Based Carbon Electrodes by Pyrolysis of Polydopamine

Rocha,

de Oliveira,

Bettini

et al. 2023

ACS Meas. Sci. Au

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“…253 First, small molecules, often termed biomarkers, indicate disease metabolites with concentration higher than normal levels. Indeed, the ions and molecules, such as acetone, 254 glucose, lactic acid, creatinine, 255 and hydrogen peroxide, can be determined with enzyme immobilized at the graphene surface. 256 The recognition of biomarkers in a mixture, e.g., full blood, exhaled breath, 257 and progesterone in urine samples, 258 has become an emerging trend for noninvasive detection.…”

Section: ■ Electronic Tongue For Tastementioning

confidence: 99%

Applications of Graphene in Five Senses, Nervous System, and Artificial Muscles

et al. 2023

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Graphene remains of great interest in biomedical applications because of biocompatibility. Diseases relating to human senses interfere with life satisfaction and happiness. Therefore, the restoration by artificial organs or sensory devices may bring a bright future by the recovery of senses in patients. In this review, we update the most recent progress in graphene based sensors for mimicking human senses such as artificial retina for image sensors, artificial eardrums, gas sensors, chemical sensors, and tactile sensors. The brain-like processors are discussed based on conventional transistors as well as memristor related neuromorphic computing. The brain−machine interface is introduced for providing a single pathway. Besides, the artificial muscles based on graphene are summarized in the means of actuators in order to react to the physical world. Future opportunities remain for elevating the performances of human-like sensors and their clinical applications.

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“…The blood creatinine level has been widely used as a biomarker for the diagnosis of renal diseases. 2,3 However, blood sampling processes cause pain and discomfort, and the high precision analysis of creatinine relies on complicated equipment and skilled personnel, which make it challenging in resource-limited settings. 4 Saliva is easy to acquire and store.…”

Section: Introductionmentioning

confidence: 99%

Ultrasensitive colorimetric detection of creatinine via its dual binding affinity for silver nanoparticles and silver ions

Huang,

Sokolikova,

Ruiz-Gonzalez

et al. 2024

RSC Adv.

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A graphene nanoplatelet-polydopamine molecularly imprinted biosensor for Ultratrace creatinine detection

Cited by 34 publications

References 26 publications

Tuning the Chemical and Electrochemical Properties of Paper-Based Carbon Electrodes by Pyrolysis of Polydopamine

Tuning the Chemical and Electrochemical Properties of Paper-Based Carbon Electrodes by Pyrolysis of Polydopamine

Applications of Graphene in Five Senses, Nervous System, and Artificial Muscles

Ultrasensitive colorimetric detection of creatinine via its dual binding affinity for silver nanoparticles and silver ions

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