Results 31 to 40 of about 1,333 (175)

A Versatile Axle for the Construction of Disassemblage Rotaxanes

Molecules, 2016
Rotaxanes are unique mechanical devices that hold great promise as sensors. We report on two new rotaxanes that contain an acid or base sensitive trigger and readily disassemble in a wide range of environments. Disassemblage was observed under TLC and 1H-
Lucas A. Powers, David B. Smithrud
doaj   +1 more source

Organic Cage Rotaxanes. [PDF]

Chemistry
Organic cages are a robust class of molecular hosts with a myriad of applications in materials science. Despite this, there has been a paucity of explorations into the modification of their properties via external functionalization. In this work, [n]rotaxanes featuring unoccupied organic cages as stopper components and a small 2,2’-bipyridine ...
Yusaf ZZ, Egleston BD, Avci G, Jelfs KE, Lewis JEM, Greenaway RL.   +5 more
europepmc   +3 more sources

Selective photoinduced charge separation in perylenediimide-pillar[5]arene rotaxanes

Nature Communications, 2022
The development of complex molecular machinery requires a detailed appreciation of the factors that control energy pathways through the nanoscale scaffold.
Nicholas Pearce, Katherine E. A. Reynolds, Surajit Kayal, Xue Z. Sun, E. Stephen Davies, Ferdinando Malagreca, Christian J. Schürmann, Sho Ito, Akihito Yamano, Stephen P. Argent, Michael W. George, Neil R. Champness   +11 more
doaj   +1 more source

Synthesis of Polyyne Rotaxanes

Organic Letters, 2012
Active-metal templating has been used to synthesize rotaxanes consisting of a phenanthroline-based macrocycle threaded around a C8, C12, or C20 polyyne chain. The crystal structure of the C12 rotaxane has been determined. In the rhenium(I) carbonyl complex of this rotaxane, with Re(CO)(3)Cl coordinated to the phenanthroline macrocycle, the proximity of
Movsisyan, L, Kondratuk, D, Franz, M, Thompson, A, Tykwinski, R, Anderson, H   +5 more
openaire   +2 more sources

Rotaxanes with Fluorocarbon Blocking Groups [PDF]

Organic Letters, 2006
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Eric J, Mahan, Jennifer A, Dennis
openaire   +2 more sources

Thermodynamic and electrochemical study of tailor-made crown ethers for redox-switchable (pseudo)rotaxanes

Beilstein Journal of Organic Chemistry, 2020
Crown ethers are common building blocks in supramolecular chemistry and are frequently applied as cation sensors or as subunits in synthetic molecular machines.
Henrik Hupatz, Marius Gaedke, Hendrik V. Schröder, Julia Beerhues, Arto Valkonen, Fabian Klautzsch, Sebastian Müller, Felix Witte, Kari Rissanen, Biprajit Sarkar, Christoph A. Schalley   +10 more
doaj   +1 more source

Into the Dynamics of Rotaxanes at Atomistic Resolution

Chemical Science, 2023
Mechanically-interlocked molecules (MIMs) are at the basis of artificial molecular machines and are attracting increasing interest for various applications, from catalysis to drug delivery and nanoelectronics. MIMs are composed of mechanically-interconnected molecular sub-parts that can move with respect to each other, imparting these systems innately ...
Luigi Leanza, Claudio Perego, Luca Pesce, Matteo Salvalaglio, Max von Delius, Giovanni M. Pavan   +5 more
openaire   +5 more sources

Stepwise, Protecting Group Free Synthesis of [4]Rotaxanes

Molecules, 2017
Despite significant advances in the last three decades towards high yielding syntheses of rotaxanes, the preparation of systems constructed from more than two components remains a challenge.
James E. M. Lewis, Joby Winn, Stephen M. Goldup   +2 more
doaj   +1 more source

Decorating polymer beads with 1014 inorganic-organic [2]rotaxanes as shown by spin counting

Communications Chemistry, 2022
Polymer beads are used in the core of magnetic particles, and beads functionalised with paramagnetic molecules are promising as agents for dynamic nuclear polarization.
Deepak Asthana, Dean Thomas, Selena J. Lockyer, Adam Brookfield, Grigore A. Timco, Iñigo J. Vitorica-Yrezabal, George F. S. Whitehead, Eric J. L. McInnes, David Collison, David A. Leigh, Richard E. P. Winpenny   +10 more
doaj   +1 more source

per-Alkoxy-pillar[5]arenes as Electron Donors: Electrochemical Properties of Dimethoxy-Pillar[5]arene and Its Corresponding Rotaxane

Molecules, 2020
1,4-dimethoxypillar[5]arene undergoes reversible multielectron oxidations forming stable radical cations, a property retained when incorporated in [2]rotaxanes, suggesting that pillar[5]arenes can be employed as viable, yet unreported, electron donors.
Nicholas Pearce, E. Stephen Davies, Neil R. Champness   +2 more
doaj   +1 more source