Proton induced aggregation of water soluble isophthalic acid appended arylene diimides: justification with perylene derivative

RSC Advances ◽  
2016 ◽  
Vol 6 (40) ◽  
pp. 34027-34037 ◽  
Author(s):  
Kausik Bag ◽  
Pradip Kumar Sukul ◽  
Dines Chandra Santra ◽  
Arkapal Roy ◽  
Sudip Malik

We report the self-assembly behaviour of five water soluble arylene diimides based on benzene, naphthalene and perylene moieties, by utilizing the essentiality of two major reversible supramolecular interactions, π-stacking and hydrogen bonding.

2006 ◽  
Vol 4 (8) ◽  
pp. 1539 ◽  
Author(s):  
Jeroen van Herrikhuyzen ◽  
Pascal Jonkheijm ◽  
Albertus P. H. J. Schenning ◽  
E. W. Meijer

Author(s):  
Ganghuo Pan ◽  
Jie Leng ◽  
Liye Deng ◽  
Liwen Xing ◽  
Rui Feng

2019 ◽  
Author(s):  
Emily R. Draper ◽  
Liam Wilbraham ◽  
Dave J. Adams ◽  
Matthew Wallace ◽  
Martijn Zwijnenburg

We use a combination of computational and experimental techniques to study the self-assembly and gelation of water-soluble perylene bisimides derivatised at the imide position with an amino acid. Specifically, we study the likely structure of self-assembled aggregates of the alanine-functionalised perylene bisimide (PBI-A) and the thermodynamics of their formation using density functional theory and predict the UV-vis spectra of such aggregates using time-dependent density functional theory. We compare these predictions to experiments in which we study the evolution of the UV-Vis and NMR spectra and rheology of alkaline PBI-A solutions when gradually decreasing the pH. Based on the combined computational and experimental results, we show that PBI-A self-assembles at all pH values but that aggregates grow in size upon protonation. Gelation is driven not by aggregate growth but reduction of the aggregation surface-charge and a decrease in the colloidal stability of the aggregation with respect to agglomeration.


2019 ◽  
Vol 21 (21) ◽  
pp. 11242-11258
Author(s):  
Valery Andrushchenko ◽  
Walter Pohle

IR spectroscopy paired with calculations reveals that structurally similar amphiphiles ODA and DOG form very different supramolecular assemblies.


Nanoscale ◽  
2019 ◽  
Vol 11 (34) ◽  
pp. 15917-15928 ◽  
Author(s):  
Emily R. Draper ◽  
Liam Wilbraham ◽  
Dave J. Adams ◽  
Matthew Wallace ◽  
Ralf Schweins ◽  
...  

We use a combination of computational and experimental techniques to study the self-assembly and gelation of amino-acid functionalised water-soluble perylene bisimides.


RSC Advances ◽  
2015 ◽  
Vol 5 (115) ◽  
pp. 95007-95013 ◽  
Author(s):  
A. Scelsi ◽  
B. Bochicchio ◽  
A. Smith ◽  
A. Saiani ◽  
A. Pepe

The self-assembly of an elastin-inspired triblock peptide into nanospheres highlights the important role of conformational flexibility and π–π stacking.


2020 ◽  
Author(s):  
Yufeng Huo ◽  
Zhenfeng He ◽  
Chao Wang ◽  
Lei Zhang ◽  
Qianyu Xuan ◽  
...  

Supramolecular polymers combine the properties of traditional polymers and supramolecules. They are normally formed by the self-assembled polymerization driven via noncovalent interactions (such as hydrogen bonding, π-π stacking, metal coordination,...


2019 ◽  
Vol 23 (04n05) ◽  
pp. 526-533 ◽  
Author(s):  
Mariana Hamer ◽  
Rolando M. Caraballo ◽  
Peter J. Eaton ◽  
Craig Medforth

Porphyrins and metalloporphyrins are one of the most widely studied platforms for the construction of supramolecular structures. These compounds have an extended aromatic system that allows [Formula: see text]–[Formula: see text] stacking interactions which, together with hydrogen bonds, electrostatic forces and the formation of inter-metallic complexes arising from peripheral groups, offer a versatile platform to control the self-assembly mechanism. In this work, we present the study of nanostructures formed by self-assembly of the water-soluble porphyrins meso-tetra([Formula: see text]-methyl-4-pyridyl)porphyrin (TMPyP) and meso-tetra(4-sulfonatophenyl)porphyrin (TPPS) in the presence of hard nanotemplates. Different nanoparticles (silica, gold, and polystyrene), concentrations and synthetic procedures were explored. The obtained materials were characterized by SEM and AFM microscopies, UV-vis absorption spectroscopy and dynamic light scattering measurements. A clear modification of the SiO2 NP surface roughness using one-pot synthesis was observed. The results were variable depending on the porphyrin–surface interactions and concentrations used. At lower porphyrin concentrations, a shift of the Soret band was observed, while at higher concentrations, free NS were formed. This reflects a competition between surface and solution directed self-assembly.


2017 ◽  
Vol 53 (84) ◽  
pp. 11552-11555 ◽  
Author(s):  
Jiangjun Chen ◽  
Zhongxin Zhang ◽  
Chengming Wang ◽  
Zhao Gao ◽  
Zongchun Gao ◽  
...  

Organogold(i)-based fibers and gels have been successfully constructed, which involve Au⋯Au interactions in the self-assembled structures.


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