scholarly journals Multi-step control over self-assembled hydrogels of peptide-derived building blocks and a polymeric cross-linker

Soft Matter ◽  
2016 ◽  
Vol 12 (2) ◽  
pp. 432-440 ◽  
Author(s):  
Van Duc Nguyen ◽  
Asish Pal ◽  
Frank Snijkers ◽  
Mathieu Colomb-Delsuc ◽  
Giulia Leonetti ◽  
...  
Keyword(s):  
Triblock Copolymer ◽  
Building Blocks ◽  
Cross Linker ◽  
Self Assembled ◽  
Step Control ◽  
Positively Charged

We present a detailed study of self-assembled hydrogels of bundled and cross-linked networks consisting of positively charged amyloid-like nanofibers and a triblock copolymer with negatively charged end blocks as a cross-linker.

scholarly journals Nanomechanics of self-assembled DNA building blocks

Nanoscale ◽  
2021 ◽  
Author(s):  
Michael Penth ◽  
Kordula Schellnhuber ◽  
Roland Bennewitz ◽  
Johanna Blass
Keyword(s):  
Structural Dynamics ◽  
Force Spectroscopy ◽  
Building Blocks ◽  
Dna Origami ◽  
Self Assembled ◽  
High Flexibility

Massive parallel force spectroscopy reveals a surprisingly high flexibility for DNA constructs used in DNA origami. The high flexibility is attributed to the structural dynamics of DNA self-assemblies.

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....

Biodegradable Polymers Derived from Amino Acids for Biological Applications

2010 ◽  
Vol 76 ◽  
pp. 30-35 ◽  
Author(s):  
Naomi Cohen-Arazi ◽  
Ilanit Hagag ◽  
Michal Kolitz ◽  
Abraham J. Domb ◽  
Jeoshua Katzhendler
Keyword(s):  
Amino Acids ◽  
Molecular Weight ◽  
Ring Opening ◽  
Building Blocks ◽  
Ring Opening Polymerization ◽  
Microwave Assisted Synthesis ◽  
Hydroxy Acids ◽  
Natural Amino Acids ◽  
Direct Condensation ◽  
Positively Charged

Optically active α-hydroxy acids derived from amino acids have been synthesized and polymerized into new biodegradable polyesters. The variety of functional side chains enables the design of positively charged, negatively charged, hydrophobic and hydrophilic chiral building blocks or any combination of these constituents. Hydroxy acids of 15 natural amino acids were prepared with retention of configuration using a straightforward and reliable method of diazotization of α-amino acids. Polyesters were synthesized from these hydroxy acids by a number of methods: direct condensation in bulk, microwave assisted synthesis and ring opening polymerization. The molecular weight of the prepared polymers ranges between 2000 to 5000Da for the direct condensation and the microwave methods, whereas the ring opening polymerization results in high molecular weight polymers (20000 to 30000Da). The polymers were analyzed for their optical activity (Circular Dichroism Spectroscopy), thermal properties (DSC), solubility, molecular weight and polydispersity (GPC), and aqueous degradation. These polymers were tested for their compatibility to neuronal cells growth and differentiation.

Polarization Spectroscopy of Charged Single Self-Assembled Quantum Dots

2003 ◽  
Vol 789 ◽  
Author(s):  
Morgan E. Ware ◽  
Allan Bracker ◽  
Daniel Gammon ◽  
David Gershoni
Keyword(s):  
Quantum Dots ◽  
Circular Polarization ◽  
Schottky Diode ◽  
Heavy Hole ◽  
Photoluminescence Spectra ◽  
Polarization Spectroscopy ◽  
Charged Exciton ◽  
Self Assembled ◽  
Positively Charged

ABSTRACTWe have demonstrated single dot spectroscopy of InAs/GaAs self-assembled quantum dots embedded in a bias controlled Schottky diode. The photoluminescence spectra exhibit discrete lines depending on bias, which we attribute to the recombination of positively charged, neutral, and negatively charged confined excitons. With excitation directly into the dot, large circular polarization memory is exhibited by the two charged exciton (trion) lines. This indicates long spin lifetimes for both the electron and the heavy hole in the quantum dots.

scholarly journals Self-Assembled Spherical Supercluster Metamaterials from Nanoscale Building Blocks

ACS Photonics ◽  
2015 ◽  
Vol 3 (1) ◽  
pp. 35-42 ◽  
Author(s):  
Vladimir A. Turek ◽  
Yan Francescato ◽  
Paolo Cadinu ◽  
Colin R. Crick ◽  
Laura Elliott ◽  
...  
Keyword(s):  
Building Blocks ◽  
Self Assembled

scholarly journals Self assembled nanocages from DNA–protoporphyrin hybrid molecules

RSC Advances ◽  
2015 ◽  
Vol 5 (108) ◽  
pp. 89025-89029 ◽  
Author(s):  
Vandana Singh ◽  
Mohan Monisha ◽  
Roy Anindya ◽  
Prolay Das
Keyword(s):  
Functional Groups ◽  
Protoporphyrin Ix ◽  
Building Blocks ◽  
Carboxyl Groups ◽  
Dna Oligomers ◽  
Organic Hybrid ◽  
Molecular Building Blocks ◽  
Modified Dna ◽  
Hybrid Molecules ◽  
Self Assembled

DNA–organic hybrid molecular building blocks are generated by covalent conjugation of the carboxyl groups of protoporphyrin IX with the amine functional groups of modified DNA oligomers.

The intrinsic microstructure of supramolecular hydrogels derived from α-cyclodextrin and pluronic F127: nanosheet building blocks and hierarchically self-assembled structures

Soft Matter ◽  
2020 ◽  
Vol 16 (25) ◽  
pp. 5906-5909 ◽  
Author(s):  
Jin Wang ◽  
Qiang Fang ◽  
Lin Ye ◽  
Aiying Zhang ◽  
Zeng-guo Feng
Keyword(s):  
Building Blocks ◽  
Pluronic F127 ◽  
Self Assembled ◽  
Channel Type ◽  
Network Microstructure

Supramolecular hydrogels based on α-CD and pluronic F127 possess a lamellate network microstructure formed by channel-type crystalline PPR nanosheets.

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