Integration of molecular machines into supramolecular materials: actuation between equilibrium polymers and crystal-like gels

Nanoscale ◽  
2017 ◽  
Vol 9 (46) ◽  
pp. 18456-18466 ◽  
Author(s):  
Giacomo Mariani ◽  
Antoine Goujon ◽  
Emilie Moulin ◽  
Michel Rawiso ◽  
Nicolas Giuseppone ◽  
...  
Keyword(s):  
Phase Transition ◽  
Polymer Solutions ◽  
Molecular Machines ◽  
Supramolecular Polymer ◽  
Supramolecular Materials ◽  
Mechanical Bond ◽  
Equilibrium Polymers

A phase transition between equilibrium polymer solutions and crystal-like gels can be controlled by the pH nano-actuation of the mechanical bond of a rotaxane-based supramolecular polymer.

scholarly journals Homodyne dynamic light scattering in supramolecular polymer solutions: anomalous oscillations in intensity correlation function

Soft Matter ◽  
2020 ◽  
Vol 16 (12) ◽  
pp. 2971-2993
Author(s):  
Emilie Moulin ◽  
Irina A. Nyrkova ◽  
Nicolas Giuseppone ◽  
Alexander N. Semenov ◽  
Eric Buhler
Keyword(s):  
Correlation Function ◽  
Light Scattering ◽  
Dynamic Light Scattering ◽  
Polymer Solutions ◽  
Supramolecular Polymer ◽  
Intensity Correlation ◽  
Molecular Systems ◽  
Self Assembling ◽  
Intensity Correlation Function

Light-sensitive self-assembling molecular systems display well-defined and persistent oscillations in the homodyne intensity correlation function after irradiation.

Phase Transition in Polymer Solutions

1973 ◽  
Vol 242 (122) ◽  
pp. 143-144 ◽  
Author(s):  
N. SCHAMP ◽  
J. HUYLEBROECK
Keyword(s):  
Phase Transition ◽  
Polymer Solutions

Chain Stoppers in Reversible Supramolecular Polymer Solutions Studied by Static and Dynamic Light Scattering and Osmometry

2006 ◽  
Vol 39 (7) ◽  
pp. 2643-2653 ◽  
Author(s):  
Wout Knoben ◽  
Nicolaas A. M. Besseling ◽  
Martien A. Cohen Stuart
Keyword(s):  
Light Scattering ◽  
Dynamic Light Scattering ◽  
Polymer Solutions ◽  
Supramolecular Polymer

Concentration boundary of the phase transition in polymer solutions

1980 ◽  
Vol 11 (5) ◽  
pp. 362-363
Author(s):  
A. I. Shamolin ◽  
V. L. Postoev ◽  
G. V. Bondarenko
Keyword(s):  
Phase Transition ◽  
Polymer Solutions ◽  
Concentration Boundary

Brownian particles in supramolecular polymer solutions

2003 ◽  
Vol 67 (5) ◽  
Author(s):  
J. van der Gucht ◽  
N. A. M. Besseling ◽  
W. Knoben ◽  
L. Bouteiller ◽  
M. A. Cohen Stuart
Keyword(s):  
Polymer Solutions ◽  
Supramolecular Polymer ◽  
Brownian Particles

Shear-Induced Isotropic-to-Nematic Phase Transition in Equilibrium Polymers

1994 ◽  
Vol 25 (7) ◽  
pp. 521-526 ◽  
Author(s):  
J.-F Berret ◽  
D. C Roux ◽  
G Porte ◽  
P Lindner
Keyword(s):  
Phase Transition ◽  
Nematic Phase ◽  
Equilibrium Polymers

A Mechanically Planar Chiral Rotaxane Ligand for Enantioselective Catalysis

2019 ◽  
Author(s):  
Andrew Heard ◽  
Stephen Goldup
Keyword(s):  
Active Site ◽  
Molecular Machines ◽  
Enantioselective Catalysis ◽  
Interlocked Molecules ◽  
End Groups ◽  
Mechanical Bond

<p> <b>Rotaxanes are interlocked molecules in which a molecular ring is trapped on a dumbbell-shaped axle due to its inability to escape over the bulky end groups, resulting in a so-called mechanical bond. Interlocked molecules have mainly been studied as components of molecular machines, but the crowded, flexible environment created by threading one molecule through another, reminiscent of the active site of an enzyme, has also been explored in catalysis and sensing. However, so far the applications of one of the most intriguing properties of interlocked molecules, their ability to display stereogenic units that do not rely on the stereochemistry of their covalent subunits, termed "mechanical chirality", have yet to be properly explored and prototypical demonstration of the applications of mechanically chiral rotaxanes remain scarce. Here we describe a mechanically planar chiral rotaxane-based Au complex that mediates a cyclopropanation reaction with stereoselectivities that are comparable with conventional covalent catalyst reported for this reaction.</b></p>

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