scholarly journals Deciphering the evolution of supramolecular nanofibers in solution and solid-state: a combined microscopic and spectroscopic approach

2021 ◽  
Author(s):  
Subhankar Kundu ◽  
Arkaprava Chowdhury ◽  
Somen Nandi ◽  
Kankan Bhattacharyya ◽  
Abhijit Patra
Keyword(s):  
Solid State ◽  
Intermolecular Interactions ◽  
Self Assembly ◽  
Organic Molecules ◽  
Fine Tuning ◽  
Small Organic Molecules

Supramolecular self-assembly of small organic molecules has emerged as a powerful tool to construct well-defined micro- and nanoarchitecture through fine-tuning a range of intermolecular interactions. The size, shape, and optical...

Near-Infrared Solid-State Lasers Based on Small Organic Molecules

ACS Photonics ◽  
2019 ◽  
Vol 6 (11) ◽  
pp. 2590-2599 ◽  
Author(s):  
Jun-Jie Wu ◽  
Xue-Dong Wang ◽  
Liang-Sheng Liao
Keyword(s):  
Solid State ◽  
Near Infrared ◽  
Organic Molecules ◽  
Solid State Lasers ◽  
Small Organic Molecules

Bis-naphthalimides bridged by electron acceptors: optical and self-assembly characteristics

RSC Advances ◽  
2016 ◽  
Vol 6 (75) ◽  
pp. 71638-71651 ◽  
Author(s):  
Ankita Saini ◽  
K. R. Justin Thomas
Keyword(s):  
Self Assembly ◽  
Organic Molecules ◽  
Vital Role ◽  
Electron Acceptors ◽  
Supramolecular Structures ◽  
The Self ◽  
Small Organic Molecules

The self-assembly of small organic molecules into molecular stacks plays a vital role in the construction of stable supramolecular structures.

Labeling of Nanofiber-Forming Peptides by Site-Directed Bioconjugation: Effect of Spacer Length on Self-Assembly

2019 ◽  
Vol 16 (2) ◽  
pp. 319-325
Author(s):  
Alessandra Scelsi ◽  
Brigida Bochicchio ◽  
Antonietta Pepe
Keyword(s):  
Self Assembly ◽  
Organic Molecules ◽  
Periodate Oxidation ◽  
Photonic Devices ◽  
Serine Residue ◽  
Spacer Length ◽  
Small Organic Molecules ◽  
Self Assembling ◽  
Versatile Tool

Background: The conjugation of small organic molecules to self-assembling peptides is a versatile tool to decorate nanostructures with original functionalities. Labeling with chromophores or fluorophores, for example, creates optically active fibers with potential interest in photonic devices. Aim and Objective: In this work, we present a rapid and effective labeling procedure for a self-assembling peptide able to form nanofibers. Rapid periodate oxidation of the N-terminal serine residue of the peptide and subsequent conjugation with dansyl moiety generated fluorophore-decorated peptides. Results: Three dansyl-conjugated self-assembling peptides with variable spacer-length were synthesized and characterized and the role of the size of the linker between fluorophore and peptide in self-assembling was investigated. Our results show that a short linker can alter the self-assembly in nanofibers of the peptide. Conclusions: Herein we report on an alternative strategy for creating functionalized nanofibrils, able to expand the toolkit of chemoselective bioconjugation strategies to be used in site-specific decoration of self-assembling peptides.

LT-STM studies on substrate-dependent self-assembly of small organic molecules

2011 ◽  
Vol 44 (46) ◽  
pp. 464005 ◽  
Author(s):  
Han Huang ◽  
Swee Liang Wong ◽  
Wei Chen ◽  
Andrew Thye Shen Wee
Keyword(s):  
Self Assembly ◽  
Organic Molecules ◽  
Small Organic Molecules

scholarly journals Halogenated Diazabutadiene Dyes: Synthesis, Structures, Supramolecular Features, and Theoretical Studies

Molecules ◽  
2020 ◽  
Vol 25 (21) ◽  
pp. 5013
Author(s):  
Valentine G. Nenajdenko ◽  
Namiq G. Shikhaliyev ◽  
Abel M. Maharramov ◽  
Khanim N. Bagirova ◽  
Gulnar T. Suleymanova ◽  
...  
Keyword(s):  
Solid State ◽  
Self Assembly ◽  
Topological Analysis ◽  
Halogen Bonding ◽  
Fine Tuning ◽  
Theoretical Studies ◽  
X Ray Diffraction ◽  
1H And 13C Nmr ◽  
X Ray ◽  
Nmr Techniques

Novel halogenated aromatic dichlorodiazadienes were prepared via copper-mediated oxidative coupling between the corresponding hydrazones and CCl4. These rare azo-dyes were characterized using 1H and 13C NMR techniques and X-ray diffraction analysis for five halogenated dichlorodiazadienes. Multiple non-covalent halogen···halogen interactions were detected in the solid state and studied by DFT calculations and topological analysis of the electron density distribution within the framework of Bader’s theory (QTAIM method). Theoretical studies demonstrated that non-covalent halogen···halogen interactions play crucial role in self-assembly of highly polarizable dichlorodiazadienes. Thus, halogen bonding can dictate a packing preference in the solid state for this class of dichloro-substituted heterodienes, which could be a convenient tool for a fine tuning of the properties of this novel class of dyes.

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