Surface-initiated polymerization-induced self-assembly of bimodal polymer-grafted silica nanoparticles towards hybrid assemblies in one step

2016 ◽  
Vol 7 (34) ◽  
pp. 5347-5350 ◽  
Author(s):  
Yang Zheng ◽  
Yucheng Huang ◽  
Zaid M. Abbas ◽  
Brian C. Benicewicz
Keyword(s):  
Silica Nanoparticles ◽  
Self Assembly ◽  
Surface Initiated Polymerization ◽  
First Case ◽  
One Step ◽  
Hybrid Assemblies

The first case of surface-initiated polymerization-induced self-assembly (SI-PISA) by polymerizing benzyl methacrylate from SiO2-g-(PHEMA, CPDB) in methanol is reported.

One-pot synthesis of inorganic nanoparticle vesicles via surface-initiated polymerization-induced self-assembly

2017 ◽  
Vol 8 (2) ◽  
pp. 370-374 ◽  
Author(s):  
Yang Zheng ◽  
Yucheng Huang ◽  
Zaid M. Abbas ◽  
Brian C. Benicewicz
Keyword(s):  
Self Assembly ◽  
Inorganic Nanoparticles ◽  
One Pot ◽  
Inorganic Nanoparticle ◽  
One Pot Synthesis ◽  
Surface Initiated Polymerization ◽  
First Case

The first case of surface-initiated polymerization-induced self-assembly (SI-PISA) of inorganic nanoparticles (NPs) into single-walled vesicles is reported.

Investigation of Au SAMs Photoclick Derivatization by PM-IRRAS

2019 ◽  
Author(s):  
Mark Workentin ◽  
François Lagugné-Labarthet ◽  
Sidney Legge
Keyword(s):  
Cell Adhesion ◽  
Self Assembly ◽  
Materials Science ◽  
Fibroblast Cell ◽  
Fine Tuning ◽  
Chemical System ◽  
Infrared Reflection ◽  
Assembled Monolayers ◽  
One Step ◽  
High Degree

In this work we present a clean one-step process for modifying headgroups of self-assembled monolayers (SAMs) on gold using photo-enabled click chemistry. A thiolated, cyclopropenone-caged strained alkyne precursor was first functionalized onto a flat gold substrate through self-assembly. Exposure of the cyclopropenone SAM to UV-A light initiated the efficient photochemical decarbonylation of the cyclopropenone moiety, revealing the strained alkyne capable of undergoing the interfacial strain-promoted alkyne-azide cycloaddition (SPAAC). Irradiated SAMs were derivatized with a series of model azides with varied hydrophobicity to demonstrate the generality of this chemical system for the modification and fine-tuning of the surface chemistry on gold substrates. SAMs were characterized at each step with polarization-modulation infrared reflection-absorption spectroscopy (PM-IRRAS) to confirm successful functionalization and reactivity. Furthermore, to showcase the compatibility of this approach with biochemical applications, cyclopropenone SAMs were irradiated and modified with azide-bearing cell adhesion peptides to promote human fibroblast cell adhesion, then imaged by live cell fluorescence microscopy. Thus, the “photoclick” methodology reported here represents an improved, versatile, catalyst-free protocol that allows for a high degree of control over the modification of material surfaces, with applicability in materials science as well as biochemistry.<br>

Examining the self-assembly of patchy alkane-grafted silica nanoparticles using molecular simulation

2021 ◽  
Vol 154 (3) ◽  
pp. 034903
Author(s):  
Nicholas C. Craven ◽  
Justin B. Gilmer ◽  
Caroline J. Spindel ◽  
Andrew Z. Summers ◽  
Christopher R. Iacovella ◽  
...  
Keyword(s):  
Silica Nanoparticles ◽  
Molecular Simulation ◽  
Self Assembly ◽  
The Self

scholarly journals Constructing Large 2D Lattices Out of DNA-Tiles

Molecules ◽  
2021 ◽  
Vol 26 (6) ◽  
pp. 1502
Author(s):  
Johannes M. Parikka ◽  
Karolina Sokołowska ◽  
Nemanja Markešević ◽  
J. Jussi Toppari
Keyword(s):  
Self Assembly ◽  
Dna Nanotechnology ◽  
Building Blocks ◽  
High Yield ◽  
Dna Nanostructures ◽  
Liquid Interfaces ◽  
Basic Principles ◽  
Dna Tiles ◽  
One Step ◽  
Solid Liquid

The predictable nature of deoxyribonucleic acid (DNA) interactions enables assembly of DNA into almost any arbitrary shape with programmable features of nanometer precision. The recent progress of DNA nanotechnology has allowed production of an even wider gamut of possible shapes with high-yield and error-free assembly processes. Most of these structures are, however, limited in size to a nanometer scale. To overcome this limitation, a plethora of studies has been carried out to form larger structures using DNA assemblies as building blocks or tiles. Therefore, DNA tiles have become one of the most widely used building blocks for engineering large, intricate structures with nanometer precision. To create even larger assemblies with highly organized patterns, scientists have developed a variety of structural design principles and assembly methods. This review first summarizes currently available DNA tile toolboxes and the basic principles of lattice formation and hierarchical self-assembly using DNA tiles. Special emphasis is given to the forces involved in the assembly process in liquid-liquid and at solid-liquid interfaces, and how to master them to reach the optimum balance between the involved interactions for successful self-assembly. In addition, we focus on the recent approaches that have shown great potential for the controlled immobilization and positioning of DNA nanostructures on different surfaces. The ability to position DNA objects in a controllable manner on technologically relevant surfaces is one step forward towards the integration of DNA-based materials into nanoelectronic and sensor devices.

Self-Assembly of Catecholic Macroinitiator on Various Substrates and Surface-Initiated Polymerization

Langmuir ◽  
2012 ◽  
Vol 28 (5) ◽  
pp. 2574-2581 ◽  
Author(s):  
Xiaolong Wang ◽  
Qian Ye ◽  
Tingting Gao ◽  
Jianxi Liu ◽  
Feng Zhou
Keyword(s):  
Self Assembly ◽  
Surface Initiated Polymerization

A protocol to develop crack-free biomimetic coatings on Ti6Al4V substrates

2007 ◽  
Vol 22 (6) ◽  
pp. 1593-1600 ◽  
Author(s):  
Sahil Jalota ◽  
Sutapa Bhaduri ◽  
Sarit B. Bhaduri ◽  
A. Cuneyt Tas
Keyword(s):  
Water Treatment ◽  
Calcium Phosphate ◽  
Alkali Treatment ◽  
Sodium Titanate ◽  
Calcium Phosphate Coating ◽  
First Case ◽  
Phosphate Coatings ◽  
Biomimetic Coating ◽  
One Step ◽  
Calcium Phosphate Coatings

Biomimetic coating of titanium and related alloys with carbonated apatitic calcium phosphate is an important area of research in implantology. While this paper specifically refers to coating Ti6Al4V, the results are valid with other related alloys as well. One step in the protocol involves an intermediate alkali treatment of Ti6Al4V to form a sodium titanate layer on the alloy surface. This pretreatment enhances the formation of the coating from simulated body fluid (SBF) solutions. Many papers in the biomimetic coating literature demonstrate the presence of cracks in coatings, irrespective of the SBF compositions and placement of the substrates. The presence of cracks may result in degradation and delamination of coatings. To the best of our knowledge, this issue remains unresolved. Therefore, the aim of this study was: (i) to examine and understand the reasons for cracking and (ii) based on the results, to develop a protocol for producing crack-free apatitic calcium phosphate coatings on Ti6Al4V substrates. In this study, the authors focused their attention on the alkali treatment procedure and the final drying step. It is hypothesized that these two steps of the process affect the crack formation the most. In the first case, the surfaces of alkali-treated substrates were examined with/without water-soaking treatment before immersing in SBF. This water treatment modifies the sodium titanate surface layer. In the second case, two different drying techniques (after soaking in SBF) were used. In one procedure, the coated substrates were dried rapidly, and in the other they were dried slowly. It was observed that the water treatment, irrespective of the drying method, provides a surface, which on subsequent soaking in SBF forms a crack-free apatitic calcium phosphate coating. Based on these results, the authors suggest a protocol incorporating a water-soaking treatment after the alkali treatment and prior to the SBF soaking treatment to obtain crack-free coatings.

Self-assembly of alkane capped silver and silica nanoparticles

2002 ◽  
Vol 12 (9) ◽  
pp. 2762-2768 ◽  
Author(s):  
H??kan Rensmo ◽  
Andrea Ongaro ◽  
Declan Ryan ◽  
Donald Fitzmaurice
Keyword(s):  
Silica Nanoparticles ◽  
Self Assembly

Directed Self-Assembly of Silica Nanoparticles into Nanometer-Scale Patterned Surfaces Using Spin-Coating

2004 ◽  
Vol 16 (16) ◽  
pp. 1427-1432 ◽  
Author(s):  
D. Xia ◽  
A. Biswas ◽  
D. Li ◽  
S. R. J. Brueck
Keyword(s):  
Silica Nanoparticles ◽  
Self Assembly ◽  
Spin Coating ◽  
Nanometer Scale ◽  
Patterned Surfaces
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