Photoresponsive Organogel Based on Supramolecular Assembly of Tris(phenylisoxazolyl)benzene

2010 ◽  
Vol 63 (4) ◽  
pp. 640 ◽  
Author(s):  
Takeharu Haino ◽  
Hiroshi Saito
Keyword(s):  
Structural Change ◽  
Solid State ◽  
Trans Isomer ◽  
Self Assembly ◽  
Uv Light ◽  
Supramolecular Assembly ◽  
The Self ◽  
Solvent Molecules ◽  
Supramolecular Networks ◽  
Cis Isomer

Azobenzene-substituted tris(phenylisoxazolyl)benzene 1 was developed as a photoresponsive gelator. A detailed study of the self-assembly of the trans- and cis-isomers in solution revealed that the planar trans-isomer assembled to form molecular stacks along its C 3 axis, whereas the cis-isomer did not owing to steric requirements. Based on diffusion ordered spectroscopy experiments, the size of the aggregates formed from the trans-isomer were roughly four times as large as those of the cis-isomer. The photoinduced gel-to-sol transition was achieved by irradiation with UV light at 360 nm. Solid-state morphologies of the trans- and cis-isomers were quite contrastive; the trans-isomer created fibrous supramolecular networks with a lot of voids in which solvent molecules could be immobilized, whereas the cis-isomer never created such fibrous morphologies. The trans–cis structural change of the azobenzene moieties obviously regulates the gelation ability of 1.

scholarly journals {N 1-[2-(Butylselanyl)benzyl]-N 2,N 2-dimethylethane-1,2-diamine}dichloridomercury(II)

2018 ◽  
Vol 74 (8) ◽  
pp. 1151-1154
Author(s):  
Pushpendra Singh ◽  
Harkesh B. Singh ◽  
Ray J. Butcher
Keyword(s):  
Hydrogen Bonding ◽  
Solid State ◽  
Self Assembly ◽  
Title Compound ◽  
Supramolecular Assembly ◽  
Molecular Geometry ◽  
The Self ◽  
Intermolecular Hydrogen Bonding ◽  
Hydrogen Bonding Interactions ◽  
Donor Acceptor

In the title compound, [HgCl2(C16H28N2Se)], the primary geometry around the Se and Hg atoms is distorted trigonal–pyramidal and distorted square-pyramidal, respectively. The distortion of the molecular geometry in the complex is caused by the steric demands of the ligands attached to the Se atom. The Hg atom is coordinated through two chloride anions, an N atom and an Se atom, making up an unusual HgNSeCl2 coordination sphere with an additional long Hg...N interaction. Intermolecular C—H...Cl interactions are the only identified intermolecular hydrogen-bonding interactions that seem to be responsible for the self assembly. These relatively weak C—H...Cl hydrogen bonds possess the required linearity and donor–acceptor distances. They act as molecular associative forces that result in a supramolecular assembly along the b-axis direction in the solid state of the title compound.

Syntheses, Crystal Structures and Properties of Two New Manganese(II) Coordination Polymers with Tetrafluorophthalate Ligands

2013 ◽  
Vol 68 (3) ◽  
pp. 277-283 ◽  
Author(s):  
Sheng-Chun Chen ◽  
Jing Qin ◽  
Zhi-Hui Zhang ◽  
Xiao-Xiao Cai ◽  
Jian Gao ◽  
...  
Keyword(s):  
Solid State ◽  
Ir Spectroscopy ◽  
Self Assembly ◽  
The Self ◽  
Photoluminescence Properties ◽  
Double Chain ◽  
Triclinic Space Group ◽  
One Dimensional ◽  
Structures And Properties ◽  
Supramolecular Networks

Two new polymeric MnII complexes, {[Mn(1,2-BDC-F4)(H2O)3](EtOH)}n (1) and [Mn(1,2- BDC-F4)(H2O)2(DMF)]n (2), have been prepared from the reaction of MnII acetate with 3,4,5,6- tetrafluoro-benzene-1,2-dicarboxylic acid (1,2-H2BDC-F4) using different solvents, and characterized by elemental analysis, IR spectroscopy, thermogravimetric (TG) analysis, and single-crystal Xray structure analysis. Both complexes crystallize in the triclinic space group P1̄ and have similar one-dimensional double chain structures, consisting of a unique arrangement of 8-membered and 14- membered rings. The effects of solvent as ligand and/or guest on the self-assembly processes of the supramolecular networks and on their photoluminescence properties in the solid state are discussed.

A new supramolecular catalytic system: the self-assembly of Rh8 cage host anthracene molecules for [4 + 4] cycloaddition induced by UV irradiation

2020 ◽  
Vol 49 (28) ◽  
pp. 9688-9693
Author(s):  
Wei-Bin Yu ◽  
Feng-Yi Qiu ◽  
Po Sun ◽  
Hua-Tian Shi ◽  
Zhi-Feng Xin
Keyword(s):  
Uv Irradiation ◽  
Catalytic System ◽  
Self Assembly ◽  
Uv Light ◽  
Cycloaddition Reaction ◽  
Supramolecular Assembly ◽  
The Self ◽  
Supramolecular System ◽  
Guest Molecules ◽  
Guest Chemistry

The supramolecular assembly is significant in host–guest chemistry. In this work, a new supramolecular system assembled through a distorted cuboid was introduced. Moreover, the [4 + 4] cycloaddition reaction of the guest molecules was further studied under UV light.

scholarly journals Variation of Interaction Zone Size For The Target Design of 2D Supramolecular Networks

2021 ◽  
Author(s):  
Łukasz Piotr Baran ◽  
Wojciech Rżysko ◽  
Dariusz Tarasewicz
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulations ◽  
Self Assembly ◽  
The Self ◽  
Coarse Grained ◽  
Zone Size ◽  
Interaction Zone ◽  
Supramolecular Networks ◽  
Dynamics Simulations ◽  
Target Design

In this study we have performed extensive coarse-grained molecular dynamics simulations of the self-assembly of tetra-substituted molecules. We have found that such molecules are able to form a variety of...

Solvothermal self-assembly of Cd2+ coordination polymers with supramolecular networks involving N-donor ligands and aromatic dicarboxylates: synthesis, crystal structure and photoluminescence studies

2017 ◽  
Vol 46 (11) ◽  
pp. 3623-3630 ◽  
Author(s):  
Yadagiri Rachuri ◽  
Bhavesh Parmar ◽  
Kamal Kumar Bisht ◽  
Eringathodi Suresh
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Coordination Polymers ◽  
Self Assembly ◽  
Luminescence Quenching ◽  
Donor Ligands ◽  
Supramolecular Networks ◽  
Photoluminescence Studies ◽  
State Luminescence

Structural, solid state luminescence of Cd(ii) coordination polymers and detection of acetone by CP1via luminescence quenching have been discussed.

Supramolecular assembly in metal complexes: Two structural cases

2013 ◽  
Vol 85 (2) ◽  
pp. 397-404 ◽  
Author(s):  
Mohamed Ghazzali
Keyword(s):  
Solid State ◽  
Self Assembly ◽  
Theoretical Calculations ◽  
Supramolecular Assembly ◽  
Halogen Bonding ◽  
One Pot ◽  
Iron Coordination ◽  
Structural Database ◽  
Molecular Components ◽  
Theoretical Analyses

With the current advances in our understanding of molecular components in the solid-state world, the relation between energy and geometry remains controversial. In this study, we deliver a concise account for supramolecular chemistry, and in order to illustrate some of its concepts we describe some structural and theoretical analyses for two unique cases of our work. We elaborate on a supramolecular model of controlled “one-pot” host–guest metal-mediated self-assembly reaction inside iron coordination polymer grid architecture, and we review halogen bonding by specifically observing M–Cl···Cl–M intermolecular interactions using Cambridge Structural Database (CSD) hit analyses with theoretical calculations.

NANOSTRUCTURES FROM DESIGNER PEPTIDES

COSMOS ◽  
2008 ◽  
Vol 04 (02) ◽  
pp. 173-183
Author(s):  
BOON TEE ONG ◽  
PARAYIL KUMARAN AJIKUMAR ◽  
SURESH VALIYAVEETTIL
Keyword(s):  
Atomic Force Microscopy ◽  
Solid State ◽  
Self Assembly ◽  
Size Range ◽  
The Self ◽  
Mica Surface ◽  
Force Microscopy ◽  
Solution Structures ◽  
Atomic Force

The present article reviews the self-assembly of oligopeptides to form nanostructures, both in solution and in solid state. The solution structures of the peptides were examined using circular dichroism and dynamic light scattering. The solid state assembly was examined by adsorbing the peptides onto a mica surface and analyzing it using atomic force microscopy. The role of pH and salt concentration on the peptide self-assembly was also examined. Nanostructures within a size range of 3–10 nm were obtained under different conditions.

The influence of oligo(ethylene glycol) side chains on the self-assembly of benzene-1,3,5-tricarboxamides in the solid state and in solution

2009 ◽  
Vol 19 (1) ◽  
pp. 124-130 ◽  
Author(s):  
Patrick J. M. Stals ◽  
Jan F. Haveman ◽  
Rafael Martín-Rapún ◽  
Carel F. C. Fitié ◽  
Anja R. A. Palmans ◽  
...  
Keyword(s):  
Solid State ◽  
Ethylene Glycol ◽  
Self Assembly ◽  
The Self ◽  
Side Chains

Hydrolysis of Surface-Bound Phosphonate Esters for the Self-Assembly of Multilayer Films:  Use of Solid State Magic Angle Spinning31P NMR as a Probe of Reactions on Surfaces

Langmuir ◽  
1996 ◽  
Vol 12 (2) ◽  
pp. 238-242 ◽  
Author(s):  
Grace Ann Neff ◽  
Catherine J. Page ◽  
Ernesta Meintjes ◽  
T. Tsuda ◽  
W.-C. Pilgrim ◽  
...  
Keyword(s):  
Solid State ◽  
Self Assembly ◽  
Multilayer Films ◽  
The Self ◽  
Magic Angle ◽  
Phosphonate Esters ◽  
Hydrolysis Of
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