Fabrication of capillary force induced DNA template Ag nanopatterns for sensitive and selective enzyme-free glucose sensors

Shakir, Sehar; Saravanan, J.; Rizan, Nastaran; Babu, Kesavan; Aziz, Md. Abdul; Moi, Phang Siew; Periasamy, Vengadesh; kumar, G. Gnana

doi:10.1016/j.snb.2017.10.021

Cited by 30 publications

(20 citation statements)

References 38 publications

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“…In our previously reported work on DNA‐templated Ag nanopatterns, spectroscopic studies suggested that Ag interacted with DNA binding to A N1 and T N3 as well as G N1 and C N3 atoms. Moreover, no change in intensities of assymetric and symetric stretching of phosphate groups and backbone of DNA at 970 cm −1 , 1051 cm −1 , 1087 cm −1 and 1222 cm −1 suggested no participation of C−C and C−O as well as phosphate groups of DNA in Ag‐DNA binding.…”

Section: Resultsmentioning

confidence: 90%

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Metallization of Silver Through Coffee‐Ring Assisted Ribonucleic Acid Scaffolding Technique

et al. 2019

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Preferential binding of base pair units with metallic ions within deoxyribonucleic acids (DNA) to form metal-DNA complexes are well studied and understood. Excitingly, such natural processes have been utilized "artificially" for designing and fabricating nanometallic structures and patterns primarily using double stranded DNA. However, little or no effort has been given to ribonucleic acid or RNA in this aspect. Therefore, in this work we study the scaffolding effect of RNA on metalizing silver (Ag) ions and further the diffusion of majority of the Ag-RNA complexes towards artificially introduced cut or scribed edges as a result of the coffee-ring effect. Upon removal of the RNA scaffold, metallic nanostructures remain along the line of the cut corresponding to the micrometre scale length of the cut, exercising some amount of control and manipulation of parameter. Other parameters such as the height and diameter may directly be related to the concentration and diffusion of the Ag-RNA complexes, while gap size related to the cut width. We anticipate that further in-depth studies will be required before a comprehensive model could be proposed for highly controllable and flexible nanostructure and nanowire fabrication using nucleic acid scaffolding techniques.[a] Dr.

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Section: Resultsmentioning

confidence: 90%

“…Ribose (sugar) consists of multiple hydroxyl groups that allow the formation of hydrogen bonds with water. In DNA scaffolding, DNA residue is removed using enzymatic etching after the templating process is completed . It is very important to remove any amounts of scaffold left on the substrate.…”

Section: Resultsmentioning

confidence: 99%

Metallization of Silver Through Coffee‐Ring Assisted Ribonucleic Acid Scaffolding Technique

et al. 2019

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“…In a study by G. Gnana kumar et al., a free‐standing and flexible carbon nanofiber membrane (CNF) composed of carbon fibers decorated with NiMoO4 nanoparticles was developed for glucose sensing analysis. The resulting NiMoO4/CNF showed excellent sensitivity, low detection limit and wide linear range for glucose detection of 301.77 μA mM −1 cm −2 , 50 nM and 0.0003–4.5 mM, respectively [19] . In another study by G. Gnana et al., three‐dimensional (3D) copper‐cobalt (Cu‐Co)/reduced graphene oxide (rGO) hierarchical architectures were electrochemically deposited on a pencil graphite electrode (PGE) and modified PGE, directly.…”

Section: Introductionmentioning

confidence: 99%

An Enzymatic Glucose Biosensor Based on a Pencil Graphite Electrode Modified with Naphthalenedimide/3,4‐Ethylenedioxythiophene Conjugated Polymer and Enriched with Au Nanoparticles

Tan

Baycan

2022

ChemistrySelect

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N,N′‐bis(2‐hexyl)‐2,6‐(3,4 ethylenedioxythiophene)‐1,4,5,8‐naphthalenimide (ENDI) monomer was electropolymerized on pencil graphite electrode (PGE) and used as a biosensor for glucose immobilization for the first time. After electropolymerization of ENDI monomer on PGE (AuNPs/PENDI/PGE), the intensity of the current signal was improved by using gold nanoparticles (AuNPs). The immobilization of the glucose oxidase (GOx) enzyme was carried out by using the cross‐linking reagent glutaraldehyde (GA) due to the strong π‐π* interaction of the poly‐ N,N′‐bis(2‐hexyl)‐2,6‐(3,4 ethylenedioxythiophene)‐1,4,5,8‐naphthalenimide (PENDI) polymer. GOx/AuNPs/PENDI/PGE designed biosensor, was characterized by a wide linear glucose determination range between 0.0009–0.33 mM with a limit of detection of 0.0407 mM and a sensitivity of 0.172 μA/mMcm2. Herein we have shown that GOx/AuNPs/PENDI/PGE biosensor effectively provides the enzyme immobilization and very effective for glucose determination in commercial samples.

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“…Among these structures, metal micro-and nanopattern structures (MNPs) have provided highly accessible and widely applicable frameworks for most practical devices, including transparent electrodes, sensor platforms, and plasmonic templates [5][6][7][8][9][10] . For instance, silver (Ag) has been one of the most versatile MNP materials owing to its excellent mechanical malleability, robust electrical and thermal conductivity, and unique plasmonic and photonic characteristics [11][12][13][14][15][16] .…”

Section: Introductionmentioning

confidence: 99%

Solution-processable electrode-material embedding in dynamically inscribed nanopatterns (SPEEDIN) for continuous fabrication of durable flexible devices

Lee

Chae

et al. 2021

Microsyst Nanoeng

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A facile and scalable lithography-free fabrication technique, named solution-processable electrode-material embedding in dynamically inscribed nanopatterns (SPEEDIN), is developed to produce highly durable electronics. SPEEDIN uniquely utilizes a single continuous flow-line manufacturing process comprised of dynamic nanoinscribing and metal nanoparticle solution coating with selective embedding. Nano- and/or micro-trenches are inscribed into arbitrary polymers, and then an Ag nanoparticle solution is dispersed, soft-baked, doctor-bladed, and hard-baked to embed Ag micro- and nanowire structures into the trenches. Compared to lithographically embossed metal structures, the embedded SPEEDIN architectures can achieve higher durability with comparable optical and electrical properties and are robust and power-efficient even under extreme stresses such as scratching and bending. As one tangible application of SPEEDIN, we demonstrate a flexible metal electrode that can operate at 5 V at temperatures up to 300 °C even under the influence of harsh external stimuli. SPEEDIN can be applied to the scalable fabrication of diverse flexible devices that are reliable for heavy-duty operation in harsh environments involving high temperatures, mechanical deformations, and chemical hazards.

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Fabrication of capillary force induced DNA template Ag nanopatterns for sensitive and selective enzyme-free glucose sensors

Cited by 30 publications

References 38 publications

Metallization of Silver Through Coffee‐Ring Assisted Ribonucleic Acid Scaffolding Technique

Metallization of Silver Through Coffee‐Ring Assisted Ribonucleic Acid Scaffolding Technique

An Enzymatic Glucose Biosensor Based on a Pencil Graphite Electrode Modified with Naphthalenedimide/3,4‐Ethylenedioxythiophene Conjugated Polymer and Enriched with Au Nanoparticles

Solution-processable electrode-material embedding in dynamically inscribed nanopatterns (SPEEDIN) for continuous fabrication of durable flexible devices

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