Polypeptide-guided assembly of conducting polymer nanocomposites

Hamedi, Mahiar; Wigenius, Jens; Tai, Feng-I; Björk, Per; Aili, Daniel

doi:10.1039/c0nr00299b

Cited by 22 publications

(18 citation statements)

References 33 publications

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“…Noble MeNPs such as Au, Ag, and Pt NPs have unique optical properties that are characterized by a strong plasmonic absorbance (Abs) at a specific wavelength, which originates from the localized surface plasmon resonance (LSPR) effect . The wavelength of this plasmonic absorbance can be tuned through self‐assembly processes and the resulting plasmonic coupling interactions, and many researchers have the modulated plasmonic properties via structural alteration of Au or Ag NPs with biomolecules, such as peptides, proteins, and DNA . This tuning ability indicates that the plasmonic absorbance can be used as a signal transducer for the biosensing of target biomolecules because its wavelength changes with the biomolecule‐induced self‐assembly of MeNPs …”

Section: Plasmonic and Catalytic Nanoparticle‐based Biosensing Systemsmentioning

confidence: 99%

High‐Performance Biosensing Systems Based on Various Nanomaterials as Signal Transducers

Lee

Adegoke

Park

2018

Biotechnology Journal

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Recently, highly sensitive and selective biosensors have become necessary for improving public health and well-being. To fulfill this need, high-performance biosensing systems based on various nanomaterials, such as nanoparticles, carbon nanomaterials, and hybrid nanomaterials, are developed. Numerous nanomaterials show excellent physical properties, including plasmonic, magnetic, catalytic, mechanical and fluorescence properties and high electrical conductivities, and these unique and beneficial properties have contributed to the fabrication of high-performance biosensors with various applications, including in optical, electrical, and electrochemical detection platforms. In addition, these properties can be transformed to signals for the detection of biomolecules. In this review, various types of nanomaterial-based biosensors are introduced, and they show high sensitivity and selectivity. In addition, the potential applications of these sensors on the biosensing of several types of biomolecules are also discussed. These nanomaterials-based biosensing systems provide a significant improvement on healthcare including rapid monitoring and early detection of infectious disease for public health.

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Section: Plasmonic and Catalytic Nanoparticle‐based Biosensing Systemsmentioning

confidence: 99%

High‐Performance Biosensing Systems Based on Various Nanomaterials as Signal Transducers

Lee

Adegoke

Park

2018

Biotechnology Journal

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“…We have previously used the biotemplating route to self‐assemble the water soluble conducting polyelectrolyte poly(4‐(2,3‐dihydrothieno [3,4‐b]‐[1,4]dioxin‐2‐yl‐methoxy)‐1‐butanesulfonic acid (PEDOT‐S) onto a number of different natural or self‐assembled structures such as silk, artificial spider silk, DNA, insulin amyloid fibrils, amyloid superstructures, peptides, and liposomes . In this work, we will expand this method to include carbohydrate structures as well and investigate the electronic behavior of the hybrid material.…”

Section: Introductionmentioning

confidence: 99%

Conducting Helical Structures from Celery Decorated with a Metallic Conjugated Polymer Give Resonances in the Terahertz Range

Elfwing

Ponseca

Ouyang

et al. 2018

Adv Funct Materials

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A method to decorate cellulose-based helices retrieved from the plant celery with a conductive polymer is proposed. Using a layer-by-layer method, the decoration of the polyanionic conducting polymer poly(4-(2,3-dihydrothieno [3,4-b]-[1,4]dioxin-2-yl-methoxy)-1-butanesulfonic acid (PEDOT-S) is enhanced after coating the negatively charged cellulose helix with a polycationic polyethyleneimine. Microscopy techniques and two-point probe are used to image the structure and measure the conductivity of the helix. Analysis of the optical and electrical properties of the coated helix in the terahertz (THz) frequency range shows a resonance close to 1 THz and a broad shoulder that extends to 3.5 THz, consistent with electromagnetic models. Moreover, as helical antennas, it is shown that both axial and normal modes are present, which are correlated to the orientation and antenna electrical lengths of the coated helices. This work opens the possibility of designing tunable terahertz antennas through simple control of their dimensions and orientation.The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/adfm.201706595.polymers. The single polymer chain in vacuums exists in a planar geometry or a helical one, [1] depending on the configuration of the covalent bond connecting monomers on the chain. While polyethylene in the absence of defects at low temperatures is a stiff zig-zag chain, the addition of sterical hindrance in the form of a styrene substituent will make polystyrene helical in geometry at the local scale of angstrom to nanometer. Biopolymers such as proteins (0.5 nm) and DNA (3 nm) are often helical at a somewhat larger scale than the simple synthetic polymers. Supramolecular ordering of proteins generates the helical structures spanning biomembranes in living systems. Chiral structures are abundant in nature. Yet technology does not have the same facility to generate helicity at the nano-, meso-, and microscale. 3D structures are inherently difficult to mass produce using standard top down processing, due to lack of 3D patterning methods. Recent developments of 3D printing enable construction of coils with dimensions above micrometers, while two-photon poly merization enables creation of structures with dimensions of ≈0.1 µm. [2] Deposition of materials through vacuum onto rotating surfaces at glancing angle of incidence, can generate helical geometries in thin films. [3] The transition from thin films with helical inner structure to separated microcoils, as used in electromagnetics, also indicates new possibilities of designing helices for electromagnetic functions in intermediate parts of the electromagnetic spectrum. They typically require good electrical conductors, patterned in a helical geometry, and metals are the standard choice to build such structures.In the absence of scalable production methods, the abundant supply of helical structures from biological organisms has been used. Algae can have helical shapes. Organelles inside plants often use h...

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“…The remaining sulfonate groups contribute to a net anionic charge, and a water‐soluble polymer, with an intrinsic bulk conductivity of around 30 S/cm 17, 18. It has been shown that PEDOT‐S can bind to oppositely charged cationic amyloid protein structures in water and form conducting nano fibrillar networks,19 and it has also been shown to form hybrid structures with synthetic peptides, and gold nanoparticles 20…”

mentioning

confidence: 99%

Electronic Polymers and DNA Self‐Assembled in Nanowire Transistors

Hamedi

Elfwing

Gabrielsson

et al. 2012

Small

Self Cite

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Aqueous self-assembly of DNA and molecular electronic materials can lead to the creation of innumerable copies of identical devices, and inherently programmed complex nanocircuits. Here self-assembly of a water soluble and highly conducting polymer PEDOT-S with DNA in aqueous conditions is shown. Orientation and assembly of the conducting DNA/PEDOT-S complex into electrochemical DNA nanowire transistors is demonstrated.

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Polypeptide-guided assembly of conducting polymer nanocomposites

Cited by 22 publications

References 33 publications

High‐Performance Biosensing Systems Based on Various Nanomaterials as Signal Transducers

High‐Performance Biosensing Systems Based on Various Nanomaterials as Signal Transducers

Conducting Helical Structures from Celery Decorated with a Metallic Conjugated Polymer Give Resonances in the Terahertz Range

Electronic Polymers and DNA Self‐Assembled in Nanowire Transistors

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