Self-Assembly of Collagen on Flat Surfaces: The Interplay of Collagen–Collagen and Collagen–Substrate Interactions

Langmuir ◽  
2014 ◽  
Vol 30 (5) ◽  
pp. 1343-1350 ◽  
Author(s):  
Badri Narayanan ◽  
George H. Gilmer ◽  
Jinhui Tao ◽  
James J. De Yoreo ◽  
Cristian V. Ciobanu
Keyword(s):  
Self Assembly ◽  
Substrate Interactions ◽  
Flat Surfaces ◽  
Collagen Substrate

scholarly journals A versatile strategy towards non-covalent functionalization of graphene by surface-confined supramolecular self-assembly of Janus tectons

2015 ◽  
Vol 6 ◽  
pp. 632-639 ◽  
Author(s):  
Ping Du ◽  
David Bléger ◽  
Fabrice Charra ◽  
Vincent Bouchiat ◽  
David Kreher ◽  
...  
Keyword(s):  
Self Assembly ◽  
Three Dimensional ◽  
Building Blocks ◽  
The Other ◽  
Two Dimensional ◽  
Covalent Functionalization ◽  
Flat Surfaces ◽  
Carbon Based

Two-dimensional (2D), supramolecular self-assembly at surfaces is now well-mastered with several existing examples. However, one remaining challenge to enable future applications in nanoscience is to provide potential functionalities to the physisorbed adlayer. This work reviews a recently developed strategy that addresses this key issue by taking advantage of a new concept, Janus tecton materials. This is a versatile, molecular platform based on the design of three-dimensional (3D) building blocks consisting of two faces linked by a cyclophane-type pillar. One face is designed to steer 2D self-assembly onto C(sp2)-carbon-based flat surfaces, the other allowing for the desired functionality above the substrate with a well-controlled lateral order. In this way, it is possible to simultaneously obtain a regular, non-covalent paving as well as supramolecular functionalization of graphene, thus opening interesting perspectives for nanoscience applications.

Self-assembly of P-chiral supramolecular phosphines on rhodium and direct evidence for Rh-catalyst-substrate interactions

2017 ◽  
Vol 46 (40) ◽  
pp. 13966-13973 ◽  
Author(s):  
Vijay S. Koshti ◽  
Anirban Sen ◽  
Dinesh Shinde ◽  
Samir H. Chikkali
Keyword(s):  
Hydrogen Bonding ◽  
Self Assembly ◽  
Direct Evidence ◽  
The Self ◽  
Substrate Interactions ◽  
Rh Catalyst

The self-assembly of p-chiral supramolecular phosphines on a rhodium metal has been established and direct evidence to demonstrate the existence of hydrogen bonding between the supramolecular catalyst and the substrate has been presented.

scholarly journals Self-Assembly: Cyano-Functionalized Triarylamines on Au(111): Competing Intermolecular versus Molecule/Substrate Interactions (Adv. Mater. Interfaces 1/2014)

2014 ◽  
Vol 1 (1) ◽  
pp. n/a-n/a ◽  
Author(s):  
Stefano Gottardi ◽  
Kathrin Müller ◽  
Juan Carlos Moreno-López ◽  
Handan Yildirim ◽  
Ute Meinhardt ◽  
...  
Keyword(s):  
Self Assembly ◽  
Substrate Interactions

scholarly journals Antiviral Activity of Silver, Copper Oxide and Zinc Oxide Nanoparticle Coatings against SARS-CoV-2

Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1312
Author(s):  
Padryk Merkl ◽  
Siwen Long ◽  
Gerald M. McInerney ◽  
Georgios A. Sotiriou
Keyword(s):  
Zinc Oxide ◽  
Antiviral Activity ◽  
Copper Oxide ◽  
Self Assembly ◽  
Plaque Assay ◽  
Virus Infectivity ◽  
Moderate Activity ◽  
Filter Media ◽  
Flat Surfaces ◽  
Nanoparticle Coatings

SARS-CoV-2 is responsible for several million deaths to date globally, and both fomite transmission from surfaces as well as airborne transmission from aerosols may be largely responsible for the spread of the virus. Here, nanoparticle coatings of three antimicrobial materials (Ag, CuO and ZnO) are deposited on both solid flat surfaces as well as porous filter media, and their activity against SARS-CoV-2 viability is compared with a viral plaque assay. These nanocoatings are manufactured by aerosol nanoparticle self-assembly during their flame synthesis. Nanosilver particles as a coating exhibit the strongest antiviral activity of the three studied nanomaterials, while copper oxide exhibits moderate activity, and zinc oxide does not appear to significantly reduce the virus infectivity. Thus, nanosilver and copper oxide show potential as antiviral coatings on solid surfaces and on filter media to minimize transmission and super-spreading events while also providing critical information for the current and any future pandemic mitigation efforts.

scholarly journals Adsorption of Polymer-Grafted Nanoparticles on Curved Surfaces

Chemistry ◽  
2021 ◽  
Vol 3 (1) ◽  
pp. 382-390
Author(s):  
Aye Ozmaian ◽  
Rob D. Coalson ◽  
Masoumeh Ozmaian
Keyword(s):  
Self Assembly ◽  
Flat Surface ◽  
Separation Distance ◽  
Polymer Chains ◽  
Coarse Grained ◽  
Curved Surfaces ◽  
Flat Surfaces ◽  
Adhesive Surface ◽  
Grafted Nanoparticles ◽  
Pulling Force

Nanometer-curved surfaces are abundant in biological systems as well as in nano-sized technologies. Properly functionalized polymer-grafted nanoparticles (PGNs) adhere to surfaces with different geometries and curvatures. This work explores some of the energetic and mechanical characteristics of the adhesion of PGNs to surfaces with positive, negative and zero curvatures using Coarse-Grained Molecular Dynamics (CGMD) simulations. Our calculated free energies of binding of the PGN to the curved and flat surfaces as a function of separation distance show that curvature of the surface critically impacts the adhesion strength. We find that the flat surface is the most adhesive, and the concave surface is the least adhesive surface. This somewhat counterintuitive finding suggests that while a bare nanoparticle is more likely to adhere to a positively curved surface than a flat surface, grafting polymer chains to the nanoparticle surface inverts this behavior. Moreover, we studied the rheological behavior of PGN upon separation from the flat and curved surfaces under external pulling force. The results presented herein can be exploited in drug delivery and self-assembly applications.

scholarly journals Kinked row-induced chirality driven by molecule–substrate interactions

2020 ◽  
Vol 22 (14) ◽  
pp. 7259-7267
Author(s):  
Sergii Snegir ◽  
Yannick J. Dappe ◽  
Oleksiy L. Kapitanchuk ◽  
Delphine Coursault ◽  
Emmanuelle Lacaze
Keyword(s):  
Dft Calculations ◽  
Self Assembly ◽  
The Self ◽  
Substrate Interactions

STM measurements on HOPG, MoS2, and Au[111] together with DFT calculations were employed for establishing of the origin of the self-assembly of 4-cyano-4′-n-decylbiphenyl (10CB) with kinked row structures.

scholarly journals Bioinspired supramolecular nanosheets of zinc chlorophyll assemblies

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Sunao Shoji ◽  
Tetsuya Ogawa ◽  
Shogo Matsubara ◽  
Hitoshi Tamiaki
Keyword(s):  
Self Assembly ◽  
Chemical Properties ◽  
The Self ◽  
Nano Materials ◽  
Flat Surfaces ◽  
Model Molecule ◽  
Chlorophyll Derivative ◽  
Physical And Chemical ◽  
Antenna Systems ◽  
And Chemical Properties

Abstract Two-dimensional sheet-like supramolecules have attracted much attention from the viewpoints of their potential application as functional (nano)materials due to unique physical and chemical properties. One of the supramolecular sheet-like nanostructures in nature is visible in the self-assemblies of bacteriochlorophyll-c–f pigments inside chlorosomes, which are major components in the antenna systems of photosynthetic green bacteria. Herein, we report artificial chlorosomal supramolecular nanosheets prepared by the self-assembly of a synthetic zinc 31-methoxy-chlorophyll derivative having amide and urea groups in the substituent at the 17-position. The semi-synthetic zinc chlorophyll derivative kinetically formed dimeric species and transformed into more thermodynamically stable chlorosomal J-aggregates in the solid state. The kinetically and thermodynamically formed self-assemblies had particle-like and sheet-like supramolecular nanostructures, respectively. The resulting nanosheets of biomimetic chlorosomal J-aggregates had flat surfaces and well-ordered supramolecular structures. The artificial sheet-like nanomaterial mimicking chlorosomal bacteriochlorophyll-c–f J-aggregates was first constructed by the model molecule, and is potentially useful for various applications including artificial light-harvesting antennas and photosyntheses.

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