scholarly journals Self-Assembly in Materials Synthesis

MRS Bulletin ◽  
2005 ◽  
Vol 30 (10) ◽  
pp. 700-704 ◽  
Author(s):  
Matthew V. Tirrell ◽  
Alexander Katz
Keyword(s):  
Block Copolymers ◽  
Self Assembly ◽  
Molecular Crystals ◽  
Building Blocks ◽  
Materials Synthesis ◽  
Length Scales ◽  
Organic Molecular Crystals ◽  
Introductory Article ◽  
Small Building ◽  
Synthesis Of Materials

AbstractThe synthesis of materials via self-assembly typically involves the spontaneous and reversible organization of small building blocks for the purpose of creating conglomerate structures over larger length scales. This introductory article describes self-assembly processes on several length scales, from subnanometer up to millimeter scales, and briefly summarizes some of the incredible diversity of materials that exhibit selfassembly. Articles in this issue cover self-assembly using zeolitic structures, organic molecular crystals, block copolymers, surfactants, mesoscale templates, and soluble crystallization additives. Keywords: block copolymers, materials synthesis, self-assembly, surfactants, templates, zeolites.

scholarly journals Viologen capped by nucleobase—building blocks for functional materials: synthesis and structure–properties relationship

2021 ◽  
Author(s):  
Marius Ciobanu ◽  
Carmen-Simona Jordan
Keyword(s):  
Self Assembly ◽  
Liquid Crystalline ◽  
Functional Materials ◽  
Building Blocks ◽  
Benzene Sulfonate ◽  
Materials Synthesis ◽  
Substantial Impact ◽  
Design And Synthesis ◽  
Thermochromic Properties ◽  
Structure Properties

AbstractThe current study presents a new class of functional derivatives (1–3) consisting of a dicationic viologen (4,4’-bipyridinium unit) (V2+) capped by nucleobases thymine (NB1), adenine (NB2), thymine/adenine (NB1, NB2), and ion-paired with amphiphilic anion 3,4,5-tris(dodecyloxy)benzene sulfonate (DOBS−). The target of our work focuses on the design and synthesis of molecular building blocks in which three different functionalities are combined: chromophore (V2+ unit), molecular recognition (NB unit), and thermotropic liquid crystal (DOBS unit). The resulted materials exhibit liquid crystalline properties at ambient temperature with significant particularities-induced by nucleobases in the mesogen structure. Structure–properties relationship study focuses on providing knowledge about (1) how the thermotropic, redox properties, thermochromism, or ionic conductive properties are influenced by the presence of purinic or pyrimidinic nucleobases, and (2) how effective is their ability to self-assembly by hydrogen bonding in nonpolar solvents. The presence of nucleobases has been proved to have a substantial impact on electron transfer rate during the reduction of viologen moieties by intermolecular aggregation. Ionic conductivity and thermochromic properties of derivatives 1–3 were investigated and compared to a non-containing nucleobase analog methyl viologen with 3,4,5-tris(dodecyloxy)benzene sulfonate anion (MV) as reference. Graphical abstract

Hierarchically Engineered Nanostructures from Compositionally Anisotropic Molecular Building Blocks

2022 ◽  
Author(s):  
Ruiqi Liang ◽  
Yazhen Xue ◽  
Xiaowei Fu ◽  
An Le ◽  
Qingliang Song ◽  
...  
Keyword(s):  
Block Copolymers ◽  
Nanostructured Materials ◽  
Self Assembly ◽  
Structural Parameters ◽  
Hierarchical Structures ◽  
Building Blocks ◽  
Assembly Process ◽  
Multifunctional Materials ◽  
Assembly Strategy ◽  
Molecular Building Blocks

The inability to synthesize hierarchical structures with independently tailored nanoscale and mesoscale features limits the discovery of next-generation multifunctional materials. We present a programmable molecular self-assembly strategy to craft nanostructured materials with a variety of phase-in-phase hierarchical morphologies. The compositionally anisotropic building blocks employed in the assembly process are formed by multi-component graft block copolymers (GBCPs) containing sequence-defined side chains. The judicious design of various structural parameters in the GBCPs enables broadly tunable compositions, morphologies, and lattice parameters across the nanoscale and mesoscale in the assembled structures. Our strategy introduces new design principles for the efficient creation of complex hierarchical structures and provides a facile synthetic platform to access nanomaterials with multiple precisely integrated functionalities.

Biomimetic Mineralization/Synthesis of Mesoscale Order in Hybrid Inorganic–Organic Materials via Nanoparticle Self-Assembly

MRS Bulletin ◽  
2005 ◽  
Vol 30 (10) ◽  
pp. 727-735 ◽  
Author(s):  
Helmut Cölfen ◽  
Shu-Hong Yu
Keyword(s):  
Self Assembly ◽  
Organic Materials ◽  
Complex Form ◽  
Building Blocks ◽  
Advanced Materials ◽  
Biomimetic Mineralization ◽  
Length Scales ◽  
Natural Systems ◽  
Organic Hybrid ◽  
Complex Forms

AbstractThe organization of nanostructures across several length scales by self-assembly is a key challenge in the design of advanced materials. In meeting this challenge, materials scientists can learn much from biomineralization processes in nature. These processes result in hybrid inorganic–organic materials with exquisite and optimized properties, complex forms, and hierarchical order over extended length scales.Biominerals are usually produced in the presence of an insoluble organic template as well as soluble molecules, which control inorganic crystallization, growth, and selfassembly. These processes can be mimicked successfully, resulting in inorganic–organic hybrid materials with complex form and mesoscale order via a nanoparticle selfassembly process.Various strategies can be applied, including the balancing of aggregation and crystallization, transforming and reorganizing of pre-formed nanoparticle building blocks, and face-selective coding of nanoparticle surfaces by additives for controlled self-assembly. The underlying principles of biomimetic mineralization will be described, along with selected examples showing that while much has already been achieved, the perfection of natural systems is still out of reach.

Self-assembly of gold nanoparticles on functional organic molecular crystals

2011 ◽  
Vol 360 (2) ◽  
pp. 422-429 ◽  
Author(s):  
Silvia Trabattoni ◽  
Massimo Moret ◽  
Luciano Miozzo ◽  
Marcello Campione
Keyword(s):  
Gold Nanoparticles ◽  
Self Assembly ◽  
Molecular Crystals ◽  
Organic Molecular Crystals

Aqueous Self-Assembly of Amphiphilic Cyclic Brush Block Copolymers as Asymmetry-Tunable Building Blocks

2019 ◽  
Vol 52 (18) ◽  
pp. 7042-7051 ◽  
Author(s):  
Junying Yang ◽  
Rong Wang ◽  
Daiqian Xie
Keyword(s):  
Block Copolymers ◽  
Self Assembly ◽  
Building Blocks

Self-Organization of Nanoscopic Building Blocks into Ordered Assemblies

2004 ◽  
Vol 818 ◽  
Author(s):  
Mark A. Horsch ◽  
Christopher R. Iacovella ◽  
Zhenli Zhang ◽  
Sharon C. Glotzer
Keyword(s):  
Computer Simulation ◽  
Liquid Crystals ◽  
Block Copolymers ◽  
Self Assembly ◽  
Building Blocks ◽  
The Self ◽  
Self Organization

AbstractWe studied the self-assembly of nanoscopic building blocks comprised of polymer-tethered nanoparticles using computer simulation and predict that these building blocks can assemble into mono- and multi-layer sheets and shells. The simulations further demonstrate that for some nanoparticle geometries and tethered nanoparticle topologies, ideas from block copolymers, surfactants and liquid crystals can be used to predict the ordered morphologies attained via self- assembly and that for specific cases the morphologies are consistent with Israelachvili packing rules.

Self-Assembly of Hydrogels From Elastin-Mimetic Block Copolymers

2002 ◽  
Vol 724 ◽  
Author(s):  
Elizabeth R. Wright ◽  
R. Andrew McMillan ◽  
Alan Cooper ◽  
Robert P. Apkarian ◽  
Vincent P. Conticello
Keyword(s):  
Block Copolymers ◽  
Self Assembly ◽  
Triblock Copolymers ◽  
Variable Temperature ◽  
Inverse Temperature ◽  
Temperature Transition ◽  
Scanning Calorimetry ◽  
Design Synthesis ◽  
Inverse Temperature Transition ◽  
Functional Biomaterials

AbstractTriblock copolymers have traditionally been synthesized with conventional organic components. However, triblock copolymers could be synthesized by the incorporation of two incompatible protein-based polymers. The polypeptides would differ in their hydrophobicity and confer unique physiochemical properties to the resultant materials. One protein-based polymer, based on a sequence of native elastin, that has been utilized in the synthesis of biomaterials is poly (Valine-Proline-Glycine-ValineGlycine) or poly(VPGVG) [1]. This polypeptide has been shown to have an inverse temperature transition that can be adjusted by non-conservative amino acid substitutions in the fourth position [2]. By combining polypeptide blocks with different inverse temperature transition values due to hydrophobicity differences, we expect to produce amphiphilic polypeptides capable of self-assembly into hydrogels. Our research examines the design, synthesis and characterization of elastin-mimetic block copolymers as functional biomaterials. The methods that are used for the characterization include variable temperature 1D and 2D High-Resolution-NMR, cryo-High Resolutions Scanning Electron Microscopy and Differential Scanning Calorimetry.

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