scholarly journals Thermoresponsive poly(2-oxazoline)s, polypeptoids, and polypeptides

2017 ◽  
Vol 8 (1) ◽  
pp. 24-40 ◽  
Author(s):  
Richard Hoogenboom ◽  
Helmut Schlaad
Keyword(s):  
Self Assembly ◽  
Structure Property ◽  
Structure Property Relationships ◽  
Recent Advances ◽  
Specific Focus

Recent advances in thermoresponsive poly(2-oxazoline)s, polypeptoids, and polypeptides, with a specific focus on structure–property relationships, self-assembly, and applications, are reviewed.

scholarly journals Rational design of metal–organic frameworks with anticipated porosities and functionalities

CrystEngComm ◽  
2014 ◽  
Vol 16 (20) ◽  
pp. 4069-4083 ◽  
Author(s):  
Muwei Zhang ◽  
Mathieu Bosch ◽  
Thomas Gentle III ◽  
Hong-Cai Zhou
Keyword(s):  
Rational Design ◽  
Metal Organic Frameworks ◽  
Structure Property ◽  
Systematic Overview ◽  
Structure Property Relationships ◽  
Recent Advances ◽  
Metal Organic

This highlight review will outline the recent advances on rational design of MOFs from both our and other groups based on their structure–property relationships, and provide a systematic overview of different methods for rational design of MOFs with desired porosities and functionalities.

scholarly journals Fully Fused Boron-Doped Polycyclic Aromatic Hydrocarbons: Their Synthesis, Structure–Property Relationships, and Self-Assembly Behavior in Aqueous Media

2022 ◽  
Author(s):  
Hiroki Narita ◽  
Heekyoung Choi ◽  
Masato Ito ◽  
Naoki Ando ◽  
Soichiro Ogi ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Self Assembly ◽  
Aqueous Media ◽  
Structure Property ◽  
Organic Optoelectronics ◽  
Structure Property Relationships ◽  
Boron Doped ◽  
Polycyclic Aromatic ◽  
Assembly Behavior

Planarized triarylboranes are attracting increasing attention not only as models of boron-doped graphenes, but also as promising materials for organic optoelectronics. In particular, polycyclic aromatic hydrocarbon (PAH) skeletons with embedded...

scholarly journals Polyelectrolyte Complexation of Oligonucleotides by Charged Hydrophobic—Neutral Hydrophilic Block Copolymers

Polymers ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 83 ◽  
Author(s):  
Alexander E. Marras ◽  
Jeffrey R. Vieregg ◽  
Jeffrey M. Ting ◽  
Jack D. Rubien ◽  
Matthew V. Tirrell
Keyword(s):  
Charge Density ◽  
Self Assembly ◽  
Block Size ◽  
Structure Property ◽  
Shell Nanoparticles ◽  
Polyelectrolyte Complexes ◽  
Structure Property Relationships ◽  
Polyelectrolyte Complexation ◽  
The Rich ◽  
Core Shell Nanoparticles

Polyelectrolyte complex micelles (PCMs, core-shell nanoparticles formed by complexation of a polyelectrolyte with a polyelectrolyte-hydrophilic neutral block copolymer) offer a solution to the critical problem of delivering therapeutic nucleic acids, Despite this, few systematic studies have been conducted on how parameters such as polycation charge density, hydrophobicity, and choice of charged group influence PCM properties, despite evidence that these strongly influence the complexation behavior of polyelectrolyte homopolymers. In this article, we report a comparison of oligonucleotide PCMs and polyelectrolyte complexes formed by poly(lysine) and poly((vinylbenzyl) trimethylammonium) (PVBTMA), a styrenic polycation with comparatively higher charge density, increased hydrophobicity, and a permanent positive charge. All of these differences have been individually suggested to provide increased complex stability, but we find that PVBTMA in fact complexes oligonucleotides more weakly than does poly(lysine), as measured by stability versus added salt. Using small angle X-ray scattering and electron microscopy, we find that PCMs formed from both cationic blocks exhibit very similar structure-property relationships, with PCM radius determined by the cationic block size and shape controlled by the hybridization state of the oligonucleotides. These observations narrow the design space for optimizing therapeutic PCMs and provide new insights into the rich polymer physics of polyelectrolyte self-assembly.

Recent Advances in Luminescent Annulated Borepins, Silepins, and Phosphepins

Synthesis ◽  
2020 ◽  
Author(s):  
Zheng Duan ◽  
Lili Wang ◽  
Juan Ma ◽  
Erbing Si
Keyword(s):  
Electronic Properties ◽  
Molecular Design ◽  
Molecular Level ◽  
Structure Property ◽  
Structure Property Relationships ◽  
Recent Advances ◽  
Optical And Electronic Properties

AbstractThis review summarizes recent research on the molecular design, optical, and electronic properties of annulated borepins, silepins, and phosphepins, with emphasis on their structure–property relationships at the molecular level.1 Introduction2 Borepins3 Silepins4 Phosphepins5 Summary and Outlook

Structure–Property Relationships in CO2-philic (Co)polymers: Phase Behavior, Self-Assembly, and Stabilization of Water/CO2Emulsions

2016 ◽  
Vol 116 (7) ◽  
pp. 4125-4169 ◽  
Author(s):  
Etienne Girard ◽  
Thierry Tassaing ◽  
Jean-Daniel Marty ◽  
Mathias Destarac
Keyword(s):  
Phase Behavior ◽  
Self Assembly ◽  
Structure Property ◽  
Structure Property Relationships

Investigating Atomic Scale Phenomena at Materials Interfaces With Correlated Techniques in STEM/TEM

1999 ◽  
Vol 589 ◽  
Author(s):  
N. D. Browning ◽  
A. W. Nicholls ◽  
E. M. James ◽  
I. Arslan ◽  
Y. Xin ◽  
...  
Keyword(s):  
Field Emission ◽  
Atomic Scale ◽  
Interface Problems ◽  
Atomic Resolution ◽  
Structure Property ◽  
Complete Understanding ◽  
Structure Property Relationships ◽  
Recent Advances ◽  
Resolution Imaging

AbstractA complete understanding of the complexities behind the structure-property relationships at materials interfaces requires the structure, composition and bonding to be characterized on the fundamental atomic scale. This level of characterization is beyond the scope of a single imaging or microanalysis technique and so to solve practical interface problems, correlation between multiple techniques must be achieved. Here we describe recent advances in the JEOL 2010F 200kV field-emission STEM/TEM that now allow atomic resolution imaging and analysis to be obtained in both TEM and STEM mode and discuss two applications of these techniques

Oligoaniline crystals: morphology control, hierarchical assembly and structure-property relationships

2012 ◽  
Vol 1402 ◽  
Author(s):  
Yue Wang ◽  
Henry D. Tran ◽  
Jinglin Liu ◽  
David C. Martin ◽  
Richard B. Kaner
Keyword(s):  
Self Assembly ◽  
Carrier Transport ◽  
Hollow Spheres ◽  
Structure Property ◽  
Exchange Method ◽  
Hierarchical Assembly ◽  
Structure Property Relationships ◽  
Selected Area Electron Diffraction ◽  
Hole Transporting ◽  
Different Shapes

ABSTRACTShort-chain oligomers of aniline are attractive semi-metallic materials for applications as organic electrodes or hole-transporting layers in organic photovoltaics. However, conventionally processed oligoanilines are often amorphous, which limits their conductivities and carrier transport mobilities. Here, we report a simple solvent-exchange method that can render a variety of oligoanilines and their derivatives into crystals of different shapes and dimensions, including 1-D fibers and wires, 2-D ribbons, and 3-D plates, hollow spheres, porous sheets, and flower-like structures. Dopant ions are also simultaneously incorporated into the crystals during self-assembly, allowing them to become conducting. Mechanistic studies suggest that the higher order crystals arise from the most primitive nanofibrillar morphology via hierarchical assembly, providing insights into a general approach to control organic crystal morphologies. Selected area electron diffraction studies reveal their single crystalline nature.

scholarly journals Dynamics in supramolecular nanomaterials

Soft Matter ◽  
2021 ◽  
Author(s):  
Yukio Cho ◽  
Ty Christoff-Tempesta ◽  
Samuel Joshua Kaser ◽  
Julia Ortony
Keyword(s):  
Small Molecules ◽  
Self Assembly ◽  
The Self ◽  
Structure Property ◽  
Structure Property Relationships

The self-assembly of amphiphilic small molecules in water leads to nanostructures with customizable structure-property relationships arising from their tunable chemistries. Characterization of these assemblies is generally limited to their static...

scholarly journals Recent advances in compatibilization strategies of wood-polymer composites by isocyanates

2020 ◽  
Vol 54 (5) ◽  
pp. 1091-1119 ◽  
Author(s):  
Aleksander Hejna ◽  
Marta Przybysz-Romatowska ◽  
Paulina Kosmela ◽  
Łukasz Zedler ◽  
Jerzy Korol ◽  
...  
Keyword(s):  
Polymer Composites ◽  
Industrial Applications ◽  
Future Research ◽  
Structure Property ◽  
Structure Property Relationships ◽  
Recent Advances ◽  
Wood Polymer ◽  
The Matrix ◽  
Wood Polymer Composites ◽  
Lignocellulosic Filler

Abstract Wood-polymer composites technologies are gaining more and more attention in the scientific community, positively affecting the increase in their industrial applications, for example, automotive, building, 3D printing, etc. Many research works are focused on the improvement in matrix–lignocellulosic filler interactions to produce highly filled composites with satisfying performance properties. In this field of research, using isocyanates due to their versatile structure and functionality seems to be a very promising approach. This paper aims at reporting on recent advances in compatibilization strategies of wood-polymer composites by isocyanates. Particular attention is focused on the correlation between isocyanate structure, as well as modification conditions on the matrix–lignocellulosic filler interactions and their impact on the structure–property relationships of wood-polymer composites. Furthermore, limitations and future research trends related to applications of isocyanate to wood-polymer composites technologies are also discussed.

Polyelectrolyte Complexation of Oligonucleotides by Charged Hydrophobic – Neutral Hydrophilic Block Polymers

2018 ◽  
Author(s):  
Alexander E. Marras ◽  
Jeffrey Vieregg ◽  
Jeffrey Ting ◽  
Jack D. Rubien ◽  
Matthew Tirrell
Keyword(s):  
Self Assembly ◽  
Block Size ◽  
Structure Property ◽  
Shell Nanoparticles ◽  
Block Polymer ◽  
Structure Property Relationships ◽  
X Ray Scattering ◽  
Polyelectrolyte Complexation ◽  
The Rich ◽  
Core Shell Nanoparticles

Polyelectrolyte complex micelles (PCMs, core-shell nanoparticles formed by complexation of a polyelectrolyte with a polyelectrolyte-hydrophilic neutral block polymer) offer an attractive solution to the critical problem of delivering therapeutic nucleic acids, but few structure-property studies have been carried out to date. We present data comparing oligonucleotide PCMs formed with poly(vinylbenzyl trimethylammonium) as the cationic block to those using poly(lysine), which is more commonly used. Despite its higher charge density, increased hydrophobicity, and permanent charge, pVBTMA appears to complex DNA more weakly than does poly(lysine). Using small angle X-ray scattering and electron microscopy, we find that, at physiological ionic strength, PCMs formed from both cationic blocks exhibit very similar structure-property relationships, with PCM radius determined by the cationic block size and shape controlled by the hybridization state of the oligonucleotides. These observations narrow the design space for optimizing therapeutic PCMs and provide new insights into the rich polymer physics of polyelectrolyte self-assembly. <br>

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