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Rotaxans

Another synthetic strategy is based on self-assembly driven by molecular recognition between complementary TT-donors and 7T-acceptors. Examples include the synthesis of catenanes and rotaxanes that can act as controUable molecular shuttles (6,236). The TT-donors in the shuttles are located in the dumb-beU shaped component of the rotaxane and the 7T-acceptors in the macrocycHc component, or vice versa. The shuttles may be switched by chemical, electrochemical, or photochemical means. [Pg.209]

Catenanes and rotaxanes including macroheterocyclic fragments 99T5265. [Pg.206]

Rotaxanes with macroheterocyclic components as new architectures for pho-toinduced electron transfer and motions 99CSR293. [Pg.268]

Template synthesis and chirality of catenanes, rotaxanes, and pretzelanes including N-macroheterocyclic lactams and related compounds as structure components 99PAC247. [Pg.268]

Intramolecular mobility of metal complexes of rotaxanes and catenanes with macroheterocyclic fragments 98ACR611. [Pg.269]

Molecular movements in pseudorotaxanes,rotaxanes,andcatenanes with macroheterocyclic fragments 98ACR405. [Pg.270]

Nonionic template synthesis of amide-linked catenanes and rotaxanes with macroheterocyclic fragments 97AG(E)930. [Pg.270]

Self-assembly in construction of pseudorotaxanes, rotaxanes, and catenanes with crown ether fragments 98PAC419. [Pg.270]

As discussed in Section 7.3, conventional free radical polymerization is a widely used technique that is relatively easy to employ. However, it does have its limitations. It is often difficult to obtain predetermined polymer architectures with precise and narrow molecular weight distributions. Transition metal-mediated living radical polymerization is a recently developed method that has been developed to overcome these limitations [53, 54]. It permits the synthesis of polymers with varied architectures (for example, blocks, stars, and combs) and with predetermined end groups (e.g., rotaxanes, biomolecules, and dyes). [Pg.329]

In the first paper on arenediazonium salt/crown ether complexes, Gokel and Cram (1973) mention that they were not able to synthesize the rotaxane 11.14 by an azo coupling reaction of the complexed diazonium ion with Af,Af-dimethylaniline. [Pg.301]

Swager et al. prepared conjugated polymers with tethered rotaxane groups [76]. As a substrate, a rotaxane containing a diiodobiphenyl unit was synthesized for this purpose. Polymerization via microwave-assisted Sono-... [Pg.188]

These compounds contain two or more independent portions that are not bonded to each other by any valence forces but nevertheless must remain linked. Catenanes are made up of two or more rings held together as links in a chain, while in rotaxanes a... [Pg.113]

For a monograph, see Schill, G. Catenanes, Rotaxanes, and Knots Academic Press NY, 1971. For a review, see Schill, G. in Chiurdoglu Conformational Analysis Academic Press NY, 1971, p. 229. [Pg.123]

Schemes of this type were carried out by Harrison, I.T. Harrison, S. J. Am. Chem. Soc., 1967, 89, 5723 Ogino, H. J. Am. Chem. Soc., 1981, 103, 1303. For a different kind of statistical synthesis of a rotaxane, see Harrison, I.T. J. Chem. Soc., Perkin Trans. 1,1974, 301 Schill, G. Beckmann, W. Schweikert, N. Fritz, H. Chem. Ber, 1986,119,2647. See also Agam, G. Graiver, D. Zilkha, A. J. Am. Chem. Soc., 1976, 98, 5206. Schemes of this type were carried out by Harrison, I.T. Harrison, S. J. Am. Chem. Soc., 1967, 89, 5723 Ogino, H. J. Am. Chem. Soc., 1981, 103, 1303. For a different kind of statistical synthesis of a rotaxane, see Harrison, I.T. J. Chem. Soc., Perkin Trans. 1,1974, 301 Schill, G. Beckmann, W. Schweikert, N. Fritz, H. Chem. Ber, 1986,119,2647. See also Agam, G. Graiver, D. Zilkha, A. J. Am. Chem. Soc., 1976, 98, 5206.
This molecule has no chiral carbons, nor does it have a rigid shape, but it too has neither a plane nor an alternating axis of symmetry. Compound 32 has been synthesized and has, in fact, been shown to be chiral. Rings containing 50 or more members should be able to exist as knots (33, and see 37 on p. 114 in Chapter 3). Such a knot would be nonsuperimposable on its mirror image. Calixarenes, ° crown ethers, catenanes, and rotaxanes (see p. 113) can also be chiral if suitably substituted. For example, A and B are nonsuperimposable mirror images. [Pg.136]

The synthesis of [3]- (figuratively shown as 7) and a [5]rotaxane (8) with one central and two terminal porphyrins in the open configuration has been reported <96AG(E)906> also a rotaxane with two Ru(terpy>2 stoppers has appeared <96CC1915>. A pseudorotaxane comprised of a macroring of 2,9-diphenyl-1,10-phenanthroline unit and a molecular string... [Pg.338]

Schalley CA, WeUandt T, Briiggemann J,V6gtle F (2004) Hydrogen-Bond-Mediated Template Synthesis of Rotaxanes, Catenanes, and Knotanes. 248 141-200 Scheer M,see Balazs G (2003) 232 1-23... [Pg.266]

Keywords. Rotaxane dendrimers. Host-guest interaction, Recognition, Self-assembly, Supra-molecular chemistry... [Pg.111]

Dendrimers with a Rotaxane Core Type I Rotaxane Dendrimers. .. 117... [Pg.111]

Rotaxane Dendrimers Bearing Dendron Stoppers Type I-A.117... [Pg.111]

Rotaxane Dendrimers with Dendron Units Attached to the Ring ... [Pg.111]

Pseudo)rotaxane-Terminated Dendrimers with Covalently-Attached... [Pg.111]


See other pages where Rotaxans is mentioned: [Pg.206]    [Pg.62]    [Pg.241]    [Pg.113]    [Pg.113]    [Pg.114]    [Pg.114]    [Pg.123]    [Pg.235]    [Pg.198]    [Pg.334]    [Pg.203]    [Pg.262]    [Pg.111]    [Pg.111]    [Pg.111]    [Pg.111]    [Pg.111]   
See also in sourсe #XX -- [ Pg.689 ]




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Active Rotaxanes as Processive Enzyme Mimics

Additive-CD-rotaxanes

Amide rotaxanes

Amide-Based Catenanes, Rotaxanes and Pretzelanes

Amide-linked rotaxane

Amphiphilic Single-station Rotaxane-based Devices

Amphiphilic rotaxane

And rotaxanes

Applications of Rotaxanes

Azide Chemistry in Rotaxane and Catenane Synthesis

Benzylic amide rotaxane

Bistable rotaxanes

Capping rotaxane synthesis

Catenanes and Rotaxanes Incorporating Amide Recognition Sites in Their Components

Catenanes rotaxanes and

Catenena and rotaxane

Chemistry with Amide-Based Catenanes and Rotaxanes

Chiral macrocycles rotaxanes

Copper -complexed rotaxane

Copper -templated synthesis 2]-rotaxanes

Copper template rotaxane synthesis

Copper-complexed rotaxanes

Cu(I) Assembled Rotaxanes

CuAAC reaction rotaxanes

Cucurbit rotaxanes

Cyanine rotaxanated

Cyclodextrin rotaxanes

Cyclodextrin-containing rotaxanes

Cycloenantiomeric rotaxanes

Dendritic rotaxanes

Dialkylammonium-containing Rotaxanes

Double-Crossover Molecules as a Route to Linear Catenanes and Rotaxanes

Dye-rotaxanes

Electrochemical neutral rotaxanes

Electrochemically Controllable Bistable Rotaxanes

Electrochemistry rotaxanes

Electron Transfer Processes in Rotaxanes and Catenanes

Enantiomers, amide rotaxane

Experimental 2]rotaxane

Extending the Amide-Based Template Synthesis to Rotaxanes

Formation of Rotaxanes

Functional rotaxanes

Hetero rotaxanes

Hydrogen Bonded Rotaxanes and Catenanes

Hydrogen Bonding Interaction Used for Complexation to Rotaxane Structure

Hydrogen-bonded rotaxanes

Induced Switching of the Bistable Rotaxanes

Interlocked molecules rotaxanes

Interlocked rotaxanes

Isomeric rotaxanes

Linkers rotaxane

Mechanical rotaxanes

Mechanically interlocked molecules rotaxanes

Metal-Assembled Catenanes, Rotaxanes, and Knots

Metal-Containing Rotaxanes

Metal-organic rotaxane frameworks

Mobility, rotaxanes/catenanes

Molecular electronics, rotaxanes

Molecular redox-driven rotaxanes

Molecular rotaxanes

Multi-rotaxanes

Multiple rotaxanes

Novel Supramolecular Architectures—Catenanes, Rotaxanes, and Knots

Organic Template-Directed Syntheses of Catenanes, Rotaxanes, and Knots

Other Catenanes and Rotaxanes

Permanent Dye Encapsulation Inside Rotaxanes

Phenanthroline-containing rotaxanes

Phenolate, rotaxane

Photoinduced Intramolecular Electron Transfer Within Porphyrinic Rotaxanes

Photoisomerizable rotaxanes

Poly rotaxane

Poly rotaxanes

Poly-pseudo-rotaxanes

Porphyrin Arrays with Noncovalently Assembled Components Incorporated in Rotaxane Structures

Porphyrin triads rotaxane

Porphyrins stoppered-rotaxanes

Pre rotaxanes

Pseudo-rotaxane

Pseudo-rotaxanes

Redox-switchable rotaxanes

Ring opening rotaxanes

Ring-Closing Metathesis 2] Rotaxane

Rotation Rotaxanes

Rotaxane

Rotaxane Chemistry

Rotaxane amide-containing

Rotaxane and Catenane Structures Involving Cyclodextrins

Rotaxane bistable

Rotaxane catalytically active

Rotaxane cationic

Rotaxane charge-transfer

Rotaxane charged

Rotaxane clipping

Rotaxane coordination polymers

Rotaxane coordination polymers frameworks

Rotaxane electrochemical oxidation

Rotaxane entities

Rotaxane formation

Rotaxane host-guest

Rotaxane hybrid

Rotaxane hydrogen bonding

Rotaxane hydrogen-bonded

Rotaxane mechanism

Rotaxane metal complex

Rotaxane molecules

Rotaxane natural

Rotaxane palindromic

Rotaxane peptide-based

Rotaxane photoactive

Rotaxane photoinduced electron transfer

Rotaxane photoswitchable

Rotaxane pseudorotaxane

Rotaxane reaction

Rotaxane redox active

Rotaxane self-assembly

Rotaxane shuttle

Rotaxane slippage

Rotaxane solvation

Rotaxane statistical threading

Rotaxane stoppers

Rotaxane structure

Rotaxane structure synthesis

Rotaxane structure, donor-acceptor

Rotaxane structure, donor-acceptor complexes

Rotaxane switching

Rotaxane synthesis

Rotaxane template

Rotaxane threading

Rotaxane unthreading

Rotaxane wheel

Rotaxane, organic synthesis

Rotaxane-based molecular shuttle

Rotaxane-like

Rotaxane-type

Rotaxane/dibenzo-24-crown-8 macrocycle

Rotaxanes

Rotaxanes - Threading Molecular Rings

Rotaxanes 2] rotaxane

Rotaxanes 3], amide-type

Rotaxanes 3], symmetrical

Rotaxanes 3], unsymmetrical

Rotaxanes Containing Cyclodextrins

Rotaxanes Containing Transition Metals

Rotaxanes Containing Transition Metals From Electronic to Molecular Motion

Rotaxanes Ruthenium complexes

Rotaxanes amide based synthesis

Rotaxanes amide-based

Rotaxanes ammonium salts

Rotaxanes anion template effect

Rotaxanes anion templated assembly

Rotaxanes anion-assisted template synthesis

Rotaxanes architectural features

Rotaxanes aromatic donor-acceptor interactions

Rotaxanes azo-dye

Rotaxanes centres

Rotaxanes chirality

Rotaxanes clipping

Rotaxanes clipping procedure

Rotaxanes compartmental

Rotaxanes constitution

Rotaxanes crystal structure

Rotaxanes cyclodextrin-based

Rotaxanes cyclodextrins

Rotaxanes cyclophane shuttling

Rotaxanes defined

Rotaxanes deprotonated

Rotaxanes directed approaches

Rotaxanes dumbbell-shaped component

Rotaxanes electrochemically controlled switching

Rotaxanes electrochemically driven

Rotaxanes electron exchange

Rotaxanes foldamers

Rotaxanes formation

Rotaxanes functionality

Rotaxanes hydrogen-bond

Rotaxanes hydrogen-bonding

Rotaxanes light-driven

Rotaxanes linear movements

Rotaxanes molecular machines

Rotaxanes molecular shuttle

Rotaxanes molecular string

Rotaxanes molecular switch based

Rotaxanes morphology

Rotaxanes nomenclature

Rotaxanes occurring

Rotaxanes oligorotaxanes

Rotaxanes peptide-based

Rotaxanes photoinduced

Rotaxanes pillar arene-based

Rotaxanes polymeric

Rotaxanes polyrotaxanes

Rotaxanes process

Rotaxanes pseudopolyrotaxanes

Rotaxanes recognition sites

Rotaxanes redox control

Rotaxanes redox-active units

Rotaxanes ring rotation

Rotaxanes ring shuttling

Rotaxanes shuttles

Rotaxanes shuttling process

Rotaxanes slipping

Rotaxanes stability

Rotaxanes statistical approach

Rotaxanes statistical threading

Rotaxanes stereochemistry

Rotaxanes structure

Rotaxanes structure formula

Rotaxanes supramolecular polymers

Rotaxanes switchable

Rotaxanes synthetic

Rotaxanes synthetic methodology

Rotaxanes template synthesis

Rotaxanes template-directed synthesis

Rotaxanes templated rotaxane synthesis

Rotaxanes templated synthesis

Rotaxanes threading

Rotaxanes threading procedure

Rotaxanes topological chemistry

Rotaxanes topological chirality

Rotaxanes topologically chiral

Rotaxanes transition metal complexes

Rotaxanes transition metal-controlled

Rotaxanes transition-metal-controlled threading

Rotaxanes transition-metal-templated synthesis

Rotaxanes triggered molecular motions

Rotaxanes with dendritic stoppers

Rotaxanes with fullerene stoppers

Rotaxanes with porphyrin stoppers

Rotaxanes, catenanes and knots

Rotaxanes, characteristics

Rotaxanes, polythiophenes

Rotaxanes, porphyrin-incorporating

Rotaxanes, synthesis

Rotaxanes: From Random to Transition

Rotaxanes: From Random to Transition Metal-Templated Threading of Rings

Sacrificial rotaxanes

Self-assembly of rotaxanes

Simple Charged Rotaxanes

Squaraine rotaxanes

Statistical Approaches to Catenanes and Rotaxanes

Structural chemistry rotaxane structure

Superexchange rotaxanes

Supramolecular rotaxane derived architectures

Supramolecular rotaxane polymer

Supramolecular rotaxane shuttles

Supramolecular rotaxanes

Switches rotaxanes

Synthesis of rotaxanes

Template 2]rotaxanes

Template Effects for the Syntheses of Rotaxanes, Catenanes, and Knots

Templated rotaxane synthesis

Tetra rotaxane

The Best Amphiphilic Bistable Rotaxane-based Device to Date

Threaded rotaxane-type compounds

Threading of rotaxanes

Topology rotaxanes

Transition metal-complexed catenane rotaxane

Transition metal-templated formation of -catenanes and -rotaxanes

Transition metals template synthesis of rotaxanes

Transition-metal-templated synthesis of rotaxanes

Uncharged Amide-containing Rotaxanes

Van der Waals Interactions in the Synthesis of Rotaxanes

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