Aqueous dynamic covalent assembly of molecular ladders and grids bearing boronate ester rungs

2019 ◽  
Vol 10 (18) ◽  
pp. 2337-2343 ◽  
Author(s):  
Megan F. Dunn ◽  
Tao Wei ◽  
Ronald N. Zuckermann ◽  
Timothy F. Scott
Keyword(s):  
Hydrogen Bond ◽  
Nucleic Acid ◽  
Self Assembly ◽  
Covalent Bond ◽  
The Self ◽  
Boronate Ester ◽  
Covalent Interactions ◽  
Nucleic Acid Sequences

Mimicking the self-assembly of nucleic acid sequences into double-stranded molecular ladders that incorporate hydrogen bond-based rungs, dynamic covalent interactions enable the fabrication of molecular ladder and grid structures with covalent bond-based rungs.

scholarly journals Crystalline modification of a rare earth nucleating agent for isotactic polypropylene based on its self-assembly

2018 ◽  
Vol 5 (5) ◽  
pp. 180247 ◽  
Author(s):  
Yuanming Zhang ◽  
Tingting Sun ◽  
Wei Jiang ◽  
Guangting Han
Keyword(s):  
Hydrogen Bond ◽  
Rare Earth ◽  
Isotactic Polypropylene ◽  
Self Assembly ◽  
Dendritic Structure ◽  
Nucleating Agent ◽  
The Self ◽  
Structure Evolution ◽  
Crystalline Modification ◽  
Assembly Structure

In this paper, the crystalline modification of a rare earth nucleating agent (WBG) for isotactic polypropylene (PP) based on its supramolecular self-assembly was investigated by differential scanning calorimetry, wide-angle X-ray diffraction and polarized optical microscopy. In addition, the relationship between the self-assembly structure of the nucleating agent and the crystalline structure, as well as the possible reason for the self-assembly behaviour, was further studied. The structure evolution of WBG showed that the self-assembly structure changed from a needle-like structure to a dendritic structure with increase in the content of WBG. When the content of WBG exceeded a critical value (0.4 wt%), it self-assembled into a strip structure. This revealed that the structure evolution of WBG contributed to the K β and the crystallization morphology of PP with different content of WBG. In addition, further studies implied that the behaviour of self-assembly was a liquid–solid transformation of WBG, followed by a liquid–liquid phase separation of molten isotactic PP and WBG. The formation of the self-assembly structure was based on the free molecules by hydrogen bond dissociation while being heated, followed by aggregation into another structure by hydrogen bond association while being cooled. Furthermore, self-assembly behaviour depends largely on the interaction between WBG themselves.

scholarly journals Isotope and Hydrogen‐Bond Effects on the Self‐Assembly of Macroions in Dilute Solution

2019 ◽  
Vol 25 (71) ◽  
pp. 16288-16293 ◽  
Author(s):  
Hui Li ◽  
Yidan Shen ◽  
Peng Yang ◽  
Jennifer E. S. Szymanowski ◽  
Jiahui Chen ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Self Assembly ◽  
The Self ◽  
Dilute Solution

scholarly journals Design of catalytic metal-organic assemblies via shape complementarity and conformational constraints in dual curvature ligands

2021 ◽  
Author(s):  
Cui-Lian Liu ◽  
Eduard Bobylev ◽  
Brice Kauffmann ◽  
Koen Robeyns ◽  
Yann Garcia ◽  
...  
Keyword(s):  
Self Assembly ◽  
Building Blocks ◽  
Alder Reaction ◽  
The Self ◽  
Supramolecular Catalysis ◽  
Shape Complementarity ◽  
Large Structures ◽  
Metal Organic ◽  
Non Covalent Interactions ◽  
Covalent Interactions

Non-covalent interactions play an essential role in the folding and self-assembly of large biological assemblies. These interactions are not only a driving force for the formation of large structures but also control conformation and com-plementary shapes of subcomponents that promote the diversity of structures and functions of the resulting assemblies. Understanding how non-covalent interactions direct self-assembly and the effect of conformation and complementary shapes on self-assembled structures will help design artificial supramolecular systems with extended components and functions. Herein, we develop a strategy for controlling more complex self-assembly with lower symmetry and flexible building blocks that combine endohedral non-covalent interactions with a dual curvature in the ligand backbone to give additional shape complementarity. A Diels-Alder reaction was used to break the symmetry of the diazaanthracene units of the ligands to give dual curvature ligands with different shapes and endohedral groups (L1-L3). The self-assembly studies of these ligands demonstrated that non-covalent interactions and shape complementary effectively control the self-assembly and enable the design of cages for supramolecular catalysis.

Facile synthesis of nucleic acid–polymer amphiphiles and their self-assembly

2015 ◽  
Vol 51 (37) ◽  
pp. 7843-7846 ◽  
Author(s):  
Fei Jia ◽  
Xueguang Lu ◽  
Xuyu Tan ◽  
Ke Zhang
Keyword(s):  
Nucleic Acid ◽  
Self Assembly ◽  
The Self ◽  
Facile Synthesis ◽  
Assembly Behavior

Facile synthesis of nucleic acid–polymer amphiphiles (NAPAs) is developed and the self-assembly behavior of the NAPAs is studied.

THE ROLE OF COMPETITION EFFECT IN THE SELF-ASSEMBLY STRUCTURE OF 3,5-DIPHENYLBENZOIC ACID AND 2,2′:6′,2″-TERPYRIDINE-4′-CARBOXYLIC ACID ON Ag(110)

2017 ◽  
Vol 24 (Supp02) ◽  
pp. 1850025
Author(s):  
YUFEN HU ◽  
WEI LI ◽  
YAN LU ◽  
ZHONGPING WANG ◽  
XINLI LENG ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Carboxylic Acid ◽  
Self Assembly ◽  
Driving Force ◽  
Density Functional ◽  
Coordination Bond ◽  
The Self ◽  
Scanning Tunneling ◽  
Dipole Interactions ◽  
Metal Organic

The self-assembly structures of 2,2[Formula: see text]:6[Formula: see text],2[Formula: see text]-terpyridine-4[Formula: see text]-carboxylic acid (C[Formula: see text]H[Formula: see text]N3O2; [Formula: see text]) molecules and 3,5-diphenylbenzoic acid (C[Formula: see text]H[Formula: see text]O2; [Formula: see text]) molecules on Ag(110) surface have been investigated by scanning tunneling microscopy (STM) and Density Functional Theory (DFT) calculation. The [Formula: see text] molecules form two different well-organized structures due to the [Formula: see text]–[Formula: see text] stacking and dipole–dipole interactions. When three C atoms of [Formula: see text] molecules are replaced by three N atoms to form [Formula: see text] molecules, the main driving force to form ordered assembly structures of [Formula: see text] molecule is changed to metal–organic coordination bond and hydrogen bond. The dramatic changes of main driving force between [Formula: see text]/Ag(110) and [Formula: see text]/Ag(110) system demonstrate that the N atoms are apt to form metal–organic coordination bond and hydrogen bond but dipole–dipole interactions and [Formula: see text]–[Formula: see text] stacking are relative to C atoms. These findings further reveal that the optimization design of organic molecules could vary the main driving force and then lead to the change of the molecular self-assembly structures.

Investigation of the non-covalent interactions of molecular self-assembly by scanning tunneling microscopy using the association of aromatic structures in pyrene-4,5,9,10-tetraone and phenanthrene-9,10-dione molecules

RSC Advances ◽  
2015 ◽  
Vol 5 (125) ◽  
pp. 103316-103320 ◽  
Author(s):  
Huiling Zhao ◽  
Shuai Zhang ◽  
Shuang Li ◽  
Xin Song ◽  
Wei Liu ◽  
...  
Keyword(s):  
Scanning Tunneling Microscopy ◽  
Self Assembly ◽  
The Self ◽  
Self Assembled Monolayers ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Aromatic Molecules ◽  
Assembled Monolayers ◽  
Non Covalent Interactions ◽  
Covalent Interactions

The self-assembled monolayers of aromatic molecules (pyrene-4,5,9,10-tetraone and phenanthrene-9,10-dione) were investigated at the liquid/solid (1-phenyloctane/graphite) interface using scanning tunneling microscopy, respectively.

Reversible assembly-disassembly of plasmonic spherical nucleic acid enabling temperature-self-controllable and biomarker-activatable photothermal effect

2021 ◽  
Author(s):  
Lixian Huang ◽  
Jinling Zhang ◽  
Lifang Pang ◽  
Shengqiang Hu ◽  
Liangliang Zhang ◽  
...  
Keyword(s):  
Nucleic Acid ◽  
Nucleic Acids ◽  
Melting Temperature ◽  
Self Assembly ◽  
The Self ◽  
Photothermal Effect ◽  
Spherical Nucleic Acid ◽  
Photothermal Heating ◽  
Spherical Nucleic Acids

Since the photothermal heating of plasmonic spherical nucleic acids (pSNAs) depended on the self-assembly level and melting temperature (Tm), temperature-self-controllable and biomarker-activatable photothermal effect in vivo was thus achieved using...

Reactive Template-Induced Self-Assembly to Ordered Mesoporous Polymer and Carbon

2013 ◽  
Vol 1549 ◽  
pp. 143-147
Author(s):  
Yeru Liang ◽  
Ruowen Fu ◽  
Dingcai Wu
Keyword(s):  
Self Assembly ◽  
Covalent Bond ◽  
Building Blocks ◽  
Mesoporous Polymer ◽  
Organic Templates ◽  
Ordered Mesoporous ◽  
Synthetic Procedure ◽  
Non Covalent Interactions ◽  
Covalent Interactions ◽  
End Group

ABSTRACTAs an important method for preparing ordered mesoporous polymer and carbon, organic template directed self-assembly is facing challenges because of the weak non-covalent interactions between the organic templates and the building blocks. Herein we developed a novel synthetic procedure based on a reactive template-induced self-assembly to construct ordered mesoporous framework. The aldehyde end-group of reactive template can react with the building blocks (i.e., resol) to form a stable covalent bond during the self-assembly process. This leads to an enhanced interaction between resol and template and thus achieves the formation of ordered mesostructure.

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