scholarly journals Template-Free Self-Assembly of Two-Dimensional Polymers into Nano/Microstructured Materials

Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3310
Author(s):  
Shengda Liu ◽  
Jiayun Xu ◽  
Xiumei Li ◽  
Tengfei Yan ◽  
Shuangjiang Yu ◽  
...  
Keyword(s):  
Self Assembly ◽  
Recent Progress ◽  
Two Dimensional ◽  
Subsequent Removal ◽  
The Past ◽  
2D Polymers ◽  
Template Free ◽  
Self Assembled ◽  
The Relationship ◽  
Polymer Tubes

In the past few decades, enormous efforts have been made to synthesize covalent polymer nano/microstructured materials with specific morphologies, due to the relationship between their structures and functions. Up to now, the formation of most of these structures often requires either templates or preorganization in order to construct a specific structure before, and then the subsequent removal of previous templates to form a desired structure, on account of the lack of “self-error-correcting” properties of reversible interactions in polymers. The above processes are time-consuming and tedious. A template-free, self-assembled strategy as a “bottom-up” route to fabricate well-defined nano/microstructures remains a challenge. Herein, we introduce the recent progress in template-free, self-assembled nano/microstructures formed by covalent two-dimensional (2D) polymers, such as polymer capsules, polymer films, polymer tubes and polymer rings.

scholarly journals Self-Assembly of Shape-Tunable Oblate Colloidal Particles into Orientationally Ordered Crystals, Glassy Crystals and Plastic Crystals

Soft Matter ◽  
2021 ◽  
Author(s):  
Jiawei Lu ◽  
Xiangyu Bu ◽  
Xinghua Zhang ◽  
Bing Liu
Keyword(s):  
Crystal Structures ◽  
Self Assembly ◽  
Colloidal Particles ◽  
Building Blocks ◽  
Fundamental Question ◽  
The Self ◽  
Plastic Crystals ◽  
Self Assembled ◽  
Glassy Crystals ◽  
The Relationship

The shapes of colloidal particles are crucial to the self-assembled superstructures. Understanding the relationship between the shapes of building blocks and the resulting crystal structures is an important fundamental question....

Square-grid coordination networks of (5,10,15,20-tetra-4-pyridylporphyrinato)zinc(II) in its clathrate with two guest molecules of 1,2-dichlorobenzene: supramolecular isomerism of the porphyrin self-assembly

2009 ◽  
Vol 65 (3) ◽  
pp. m139-m142 ◽  
Author(s):  
Rajesh Koner ◽  
Israel Goldberg
Keyword(s):  
Self Assembly ◽  
Metal Ion ◽  
Three Dimensional ◽  
Two Dimensional ◽  
Coordination Networks ◽  
Guest Molecules ◽  
Square Grid ◽  
Supramolecular Isomerism ◽  
Self Assembled ◽  
Solvent Molecules

The title compound, (5,10,15,20-tetra-4-pyridylporphyrinato)zinc(II) 1,2-dichlorobenzene disolvate, [Zn(C40H24N8)]·2C6H4Cl2, contains a clathrate-type structure. It is composed of two-dimensional square-grid coordination networks of the self-assembled porphyrin moiety, which are stacked one on top of the other in a parallel manner. The interporphyrin cavities of the overlapping networks combine into channel voids accommodated by the dichlorobenzene solvent. Molecules of the porphyrin complex are located on crystallographic inversion centres. The observed two-dimensional assembly mode of the porphyrin units represents a supramolecular isomer of the unique three-dimensional coordination frameworks of the same porphyrin building block observed earlier. The significance of this study lies in the discovery of an additional supramolecular isomer of the rarely observed structures of metalloporphyrins self-assembled directly into extended coordination polymers without the use of external ligand or metal ion auxiliaries.

4. Gelification and soapiness

2020 ◽  
pp. 63-90
Author(s):  
Tom McLeish
Keyword(s):  
Brownian Motion ◽  
Self Assembly ◽  
Soft Matter ◽  
Intermolecular Forces ◽  
Two Dimensional ◽  
Important Distinction ◽  
One Dimensional ◽  
The Third ◽  
Self Assembled ◽  
Weak Intermolecular Forces

‘Gelification and soapiness’ looks at the third class of soft matter: ‘self-assembly’. Like the colloids of inks and clays, and the polymers of plastics and rubbers, ‘self-assembled’ soft matter also emerges as a surprising consequence of Brownian motion combined with weak intermolecular forces. Like them, it also leads to explanations of a very rich world of materials and phenomena, such as gels, foams, soaps, and ultimately to many of the structures of biological life. There is an important distinction that needs to be made between one-dimensional and two-dimensional self-assembly.

Self-assembled atomically thin hybrid conjugated polymer perovskites with two-dimensional structure

2018 ◽  
Vol 6 (31) ◽  
pp. 8405-8410 ◽  
Author(s):  
Furkan H. Isikgor ◽  
Chilla Damodara Reddy ◽  
Mengsha Li ◽  
Hikmet Coskun ◽  
Bichen Li ◽  
...  
Keyword(s):  
Self Assembly ◽  
Conjugated Polymer ◽  
The Self ◽  
Dimensional Structure ◽  
Two Dimensional ◽  
Self Assembled

2D hybrid perovskites are formed through the self assembly of polyaniline with PbI6 octahedra.

scholarly journals Two-dimensional arrays self-assembled via interference of concentration modulation waves in drying solutions

2019 ◽  
Vol 6 (3) ◽  
pp. 507-514 ◽  
Author(s):  
Shunpu Li ◽  
Young Tea Chun ◽  
Jin Li ◽  
Pawan Shrestha ◽  
Hyungju Ahn ◽  
...  
Keyword(s):  
Thin Films ◽  
Self Assembly ◽  
Single Phase ◽  
Two Dimensional ◽  
Solution Processed ◽  
Self Assembled ◽  
Patterned Nanostructures

Self-assembly of patterned nanostructures in solution-processed thin films with single phase polymers is successful.

scholarly journals A simple approach to prepare self-assembled, nacre-inspired clay/polymer nanocomposites

Soft Matter ◽  
2020 ◽  
Vol 16 (23) ◽  
pp. 5497-5505 ◽  
Author(s):  
P. Xu ◽  
T. Erdem ◽  
E. Eiser
Keyword(s):  
Polymer Nanocomposites ◽  
Hierarchical Structure ◽  
Self Assembly ◽  
Simple Approach ◽  
Water Evaporation ◽  
Assembly Process ◽  
Inorganic Nanocomposites ◽  
Self Assembled ◽  
The Relationship

Inspired by the relationship between the ordered architecture of aragonite crystals and biopolymers found in natural nacre, we present a facile strategy to construct organic/inorganic nanocomposites with hierarchical structure via a water-evaporation driven self-assembly process.

Self-Assembly Influenced by Geometrical Orientation of Nanosheet in Layered Nanoparticles

2015 ◽  
Vol 14 (01n02) ◽  
pp. 1460018
Author(s):  
Kazuomi Numata ◽  
Kiminori Sato
Keyword(s):  
Self Assembly ◽  
Uniaxial Pressure ◽  
Two Dimensional ◽  
Positronium Lifetime ◽  
Self Assembled ◽  
2D Nanosheets ◽  
Ordered State

An influence of geometrical orientation of two-dimensional (2D) nanosheets on long-term rheological self-assembly with the aid of H 2 O molecules is investigated by positronium lifetime spectroscopy. It is found that self-assembly is accelerated for the well self-assembled sample due to in-plane ordering of 2D nanosheets. The acceleration of self-assembly is further enhanced for the sample prepared by uniaxial pressure compaction owing to stacking of 2D nanosheets with a highly ordered state. The present results evidence that self-assembly is significantly influenced by local geometrical orientation of 2D nanosheets in layered nanoparticles.

Two-Dimensional Self-Assembly and Catalytic Function: Conversion of Chiral Alcohols into Self-Assembled Enols on Pt(111)

2009 ◽  
Vol 114 (16) ◽  
pp. 7291-7298 ◽  
Author(s):  
Vincent Demers-Carpentier ◽  
Marc-André Laliberté ◽  
Stéphane Lavoie ◽  
Gautier Mahieu ◽  
Peter H. McBreen
Keyword(s):  
Self Assembly ◽  
Chiral Alcohols ◽  
Two Dimensional ◽  
Catalytic Function ◽  
Self Assembled

Self-Assembled Optical Gratings with Banana-Shaped Liquid Crystals

2010 ◽  
Vol 428-429 ◽  
pp. 12-23 ◽  
Author(s):  
Yuan Ming Huang
Keyword(s):  
Liquid Crystals ◽  
Self Assembly ◽  
Red Light ◽  
Diffraction Gratings ◽  
The Self ◽  
Two Dimensional ◽  
Glass Substrates ◽  
Self Assembled ◽  
Optical Gratings ◽  
Diffraction Patterns

We demonstrated that a homologous series of banana-shaped liquid crystals, 1,3-phenylene bis(4-alkyloxybenzylideneamine), could assemble themselves into various kinds of groove-free diffraction gratings when their isotropic melts were slowly cooled into mesophases between two pieces of glass substrates. The groove-free diffraction gratings included one-dimensional parallel gratings, two-dimensional crossed gratings, two-dimensional fan-shaped gratings and two-dimensional circular gratings. Characterization by means of polarized optical microscopy showed that a pattern of periodic modulation of the refractive index was developed in the thin films formed by the banana-shaped compound. Our laser light diffraction experiments confirmed that these groove-free gratings could effectively diffract the incident red light from a helium-neon laser. On the basis of the diffraction equations derived for the self-assembled groove-free optical gratings, the diffraction patterns were simulated for the parallel gratings, orthogonally crossed gratings, fan-shaped gratings and circular gratings, respectively, and good agreement was achieved. The mechanisms on the self-assembly of the banana-shaped molecules were discussed in terms of intermolecular interactions. Our work provides an alternative method for manufacturing diffraction gratings by harnessing the self-assembly of banana-shaped molecules.

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