Self-Assembly of Yttrium-Containing Lacunary Polyoxotungstate Macroanions in Solution with Controllable Supramolecular Structure Size by pH or Solvent Content

Langmuir ◽  
2008 ◽  
Vol 24 (17) ◽  
pp. 9308-9313 ◽  
Author(s):  
Padmaja P. Mishra ◽  
Jing Jing ◽  
Lynn C. Francesconi ◽  
Tianbo Liu
Keyword(s):  
Self Assembly ◽  
Supramolecular Structure ◽  
Solvent Content

Formation of toroids by self-assembly of an α–α corner mimetic: supramolecular cyclization

2017 ◽  
Vol 5 (36) ◽  
pp. 7583-7590 ◽  
Author(s):  
Debasish Podder ◽  
Santu Bera ◽  
Mintu Debnath ◽  
Tanmay Das ◽  
Debasish Haldar
Keyword(s):  
Self Assembly ◽  
Supramolecular Structure ◽  
Cyclization Reaction ◽  
End To End

An α–α corner mimetic self-assembles into a rod shape supramolecular structure which bends and closes end-to-end like a cyclization reaction to form toroids.

scholarly journals A unique quinolineboronic acid-based supramolecular structure that relies on double intermolecular B–N bonds for self-assembly in solid state and in solution

Tetrahedron ◽  
2007 ◽  
Vol 63 (16) ◽  
pp. 3287-3292 ◽  
Author(s):  
Yanling Zhang ◽  
Minyong Li ◽  
Sekar Chandrasekaran ◽  
Xingming Gao ◽  
Xikui Fang ◽  
...  
Keyword(s):  
Solid State ◽  
Self Assembly ◽  
Supramolecular Structure

Corrigendum to “A unique quinolineboronic acid-based supramolecular structure that relies on double intermolecular B–N bonds for self-assembly in solid state and in solution”

Tetrahedron ◽  
2007 ◽  
Vol 63 (37) ◽  
pp. 9256
Author(s):  
Yanling Zhang ◽  
Minyong Li ◽  
Sekar Chandrasekaran ◽  
Xingming Gao ◽  
Xikui Fang ◽  
...  
Keyword(s):  
Solid State ◽  
Self Assembly ◽  
Supramolecular Structure

Flexible Alkyl Tails Help Shape Matching and Close Packing in Self-Assembly of Supramolecular Structure

2020 ◽  
Vol 21 (1) ◽  
pp. 40-44
Author(s):  
Ping Liao ◽  
Steven P. Kelley ◽  
Kanishka Sikligar ◽  
Heng Deng ◽  
Gary A. Baker ◽  
...  
Keyword(s):  
Self Assembly ◽  
Supramolecular Structure ◽  
Shape Matching ◽  
Close Packing

pH responding reversible supramolecular self-assembly of water-soluble amino-imidazole-armed perylene diimide dye for biological applications

RSC Advances ◽  
2015 ◽  
Vol 5 (3) ◽  
pp. 2207-2212 ◽  
Author(s):  
Wei Zhang ◽  
Shi-Yu Gan ◽  
Feng-Hua Li ◽  
Dong-Xue Han ◽  
Qi-Xian Zhang ◽  
...  
Keyword(s):  
Self Assembly ◽  
Supramolecular Structure ◽  
Fluorescence Emission ◽  
Water Soluble ◽  
Perylene Diimide ◽  
Biological Applications ◽  
External Ph ◽  
Amino Imidazole

A water-soluble amino-imidazole-armed perylene diimide dye exhibits reversible supramolecular structure and fluorescence emission conversion upon external pH-stimulation.

Monitoring Supramolecular Self-Assembly using Time-Resolved Fluorescence Spectroscopy

2011 ◽  
Vol 64 (6) ◽  
pp. 825 ◽  
Author(s):  
Scott C. McLean ◽  
Colin A. Scholes ◽  
Trevor A. Smith ◽  
Michelle L. Gee
Keyword(s):  
Fluorescence Spectroscopy ◽  
Self Assembly ◽  
Supramolecular Structure ◽  
Micelle Formation ◽  
Fluorescence Decay ◽  
Distribution Analysis ◽  
Time Resolved Fluorescence ◽  
Decay Kinetics ◽  
Time Resolved ◽  
Relative Population

Time-resolved fluorescence spectroscopy is used to observe subtleties in supramolecular structure during the self-assembly of polymers in solution. Lifetime distribution analysis of the fluorescence decay kinetics of the solvent-sensitive fluorescent probe 1-anilino-8-naphthalene sulfonic acid associated with the di-block copolymer poly(2-vinylpyridine)41–poly(ethylene oxide)204 (P2VP-PEO) as it self-assembles enabled identification of three microdomains, distinguishable on the basis of micropolarity. These microdomains can be assigned to different supramolecular substructures: the micelle corona (high polarity), the micelle core and the P2VP globule (both low polarity), and the core–corona interface and the globule–PEO junction (both intermediate polarity). Changes in the relative population distributions of these sub-structures as a function of P2VP-PEO pinpoint the onset of micellization corresponding to the critical micelle concentration (CMC) of the copolymer, but indicate significant variation in supramolecular structure, including micelle formation, well below the CMC. This suggests that supramolecular self-assembly in polymeric systems has characteristics of a second order phase transition.

Self-assembly of thiolated graphene oxide onto a gold surface and in the supramolecular order of discotic liquid crystals

RSC Advances ◽  
2015 ◽  
Vol 5 (59) ◽  
pp. 47692-47700 ◽  
Author(s):  
Avinash B. Shivanandareddy ◽  
Manish Kumar ◽  
V. Lakshminarayanan ◽  
Sandeep Kumar
Keyword(s):  
Graphene Oxide ◽  
Liquid Crystals ◽  
Self Assembly ◽  
Supramolecular Structure ◽  
Gold Surface ◽  
Discotic Liquid Crystals ◽  
Gold Surfaces ◽  
Covalent Functionalization ◽  
Potential Applications ◽  
Graphene Oxide Sheets

Covalent functionalization of graphene oxide sheets with thiol produces thiolated graphene oxide which self assembles on gold surfaces and in the supramolecular structure of a discotic mesophase which have potential applications in optoelectronics.

scholarly journals Self-Assembly of Amphiphilic Biotransesterified β-Cyclodextrins: Supramolecular Structure of Nanoparticles and Surface Properties

Langmuir ◽  
2017 ◽  
Vol 33 (32) ◽  
pp. 7917-7928 ◽  
Author(s):  
Jean-Luc Putaux ◽  
Christine Lancelon-Pin ◽  
François-Xavier Legrand ◽  
Marion Pastrello ◽  
Luc Choisnard ◽  
...  
Keyword(s):  
Surface Properties ◽  
Self Assembly ◽  
Supramolecular Structure ◽  
Structure Of Nanoparticles

scholarly journals Study of supramolecular structure of petroleum asphaltenes

2019 ◽  
Vol 57 (3) ◽  
pp. 99-104
Author(s):  
Talgat I. Sharipov ◽  
◽  
Rauf Z. Bakhtizin ◽  
Bulat R. Badretdinov ◽  
Mikhail Yu. Dolomatov ◽  
...  
Keyword(s):  
Molecular Mechanics ◽  
Molecular Electronics ◽  
Self Assembly ◽  
Supramolecular Structure ◽  
X Ray Diffraction ◽  
Molecular Fragments ◽  
Petroleum Asphaltenes ◽  
Optimization Of Geometry ◽  
Full Optimization ◽  
A Charge

The article is devoted to the topical problem of studying the supramolecular structure of petroleum asphaltenes. They are the prospective materials for molecular electronics and nanotechnology. At present, the properties of asphaltenes at the supramolecular level are studied by various experimental methods and methods of mathematical modeling. As objects of a research the asphaltenes concentrated in residual fractions of vacuum distillation of the West Siberian oil with a temperature of boiling more than 500 °C were used. Asphaltenes of samples allocated with dissolution of fractions in toluene with the subsequent sedimentation by surplus of n-heptane by Golde's technique. Results of ASM-researches show existence of steady units from nanoclusters of oil asphaltenes in the form of structures of an ellipsoidal form about 4.5 nm high and with a lateral size up to 100 nm. The research of supramolecular structure of nanoclusters of oil asphaltenes in the GAUSSIAN software package is executed. Calculation was carried out by method of molecular mechanics of MM with full optimization of geometry. The structure of molecular fragments of a nanoparticle of asphaltenes is defined according to data of 1H, 13C NMR and IR of spectroscopy and the chemical analysis earlier. These data will be agreed with results of works on identification of molecules of asphaltenes by the ASM method of high resolution. Follows from calculations that the nanoclusters having an appearance of quasicrystal reniform structures with number of molecular fragments from 2 to 10 are steadiest, at the same time the distance between the planes of molecular fragments of a nanocluster is in the range from 3.53 up to 3.67 Å, and diameter of particles 11-40 Å. Data on height of nanoclusters will well be agreed with results of ASM-researches for small structures. Calculations of supramolecular structure of oil asphaltenes by method of molecular mechanics show considerable energy of intermolecular interaction of structural molecular fragments of 60-118 kJ/mol that testifies to a possibility of self-assembly of ordered structures from these nanoparticles visualized by means of ASM. The received results are confirmed by data of the X-ray diffraction analysis and electric measurements on energy of activation of hopping conductivity (129.58 kJ/mol) and also the carried-out earlier thermodynamic calculations. As appears from calculations, the increased stability of quasicrystal structure which arises, most likely, as a result of transfer of a charge between fragments as molecules have the low potential of ionization and high affinity to an electron is characteristic of nanoclusters.

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