Rotaxanes

Gibson, Harry W.; Mahan, Eric J.

doi:10.1007/0-306-47117-5_12

Cited by 4 publications

(3 citation statements)

References 162 publications

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“…Pseudopolyrotoxanes and polyrotoxanes are polymers composed of a linear polymer chain threaded through one or more cyclic species [Gibson and Mahan, 2000;Raymo and Stoddart, 1999]. Synthesis of pseudopolyrotoxanes and polyrotoxanes involves polymerization of monomer(s) in the presence of the cyclic species.…”

Section: -17e Pseudopolyrotoxanes and Polyrotoxanesmentioning

confidence: 99%

Step Polymerization

2004

Principles of Polymerization

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Section: -17e Pseudopolyrotoxanes and Polyrotoxanesmentioning

confidence: 99%

Step Polymerization

2004

Principles of Polymerization

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“…Different inclusion complexes based on CDs and either homo-or copolymers have been prepared and investigated. Poly(ethylene oxide) [5], poly(propylene glycol) [6], poly(methylvinyl ether) [7], polyamides [8], polyesters [9], cationic polymers [10][11][12][13], polyisobutene [14] or polyazomethines [15][16][17][18] were considered as guest partners for CDs and a number of reviews have been published on this topic [19][20][21][22][23][24][25][26][27]. More complicated PRot architectures, such as molecular tubes, have been also prepared [28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Polyrotaxanes composed of β-cyclodextrin and polydimethylsiloxanes: synthesis, morphology and thermal behavior

Marangoci¹,

Farcas²,

Pinteala³

et al. 2007

High Performance Polymers

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Epoxy-terminated polydimethylsiloxanes (E-PDMSs) of different molecular weight Mn were proved to undergo inclusion complexation into the inner cavity of β-cyclodextrin (β-CD), resulting in polyrotaxanes (PRots). The dethreading of the macrocycle was prevented by blocking the siloxane chain with a bulky substituent derived from 4-aminophenyltriphenyl methane (APhTPhM). As revealed by thermogravimetric analysis, differential scanning calorimetry, scanning electron microscopy (SEM), wide-angle X-ray diffraction and statistical analysis of SEM images, the thermal properties and the morphology of polyrotoxanes are dependent upon Mn, β-CD/E-PDMS molar ratio and the presence of free β-CD in the complexes.

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“…Since the initial experimental reports of rotaxanes nearly 40 years ago, a number of methods utilizing a wide variety of cyclic and linear species have been used for their preparation . A theme common to all of these syntheses is the placement of large blocking groups at the ends of the linear component to trap the cyclic species and prevent dissociation from occurring.…”

mentioning

confidence: 99%

Rotaxanes with Fluorocarbon Blocking Groups

and

Dennis

2006

Org. Lett.

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A novel [2]-rotaxane has been prepared in which perfluoropropyl stoppers have been utilized as electronic blocking groups. To further investigate this capability, a linear compound that was precapped with perfluoropropyl groups was also prepared. This compound did not demonstrate rotaxane formation when mixed with dibenzo-24-crown-8, providing further evidence that the perfluoropropyl groups were effective electronic stoppers for the macrocycle. [structure: see text]

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Rotaxanes

Cited by 4 publications

References 162 publications

Step Polymerization

Step Polymerization

Polyrotaxanes composed of β-cyclodextrin and polydimethylsiloxanes: synthesis, morphology and thermal behavior

Rotaxanes with Fluorocarbon Blocking Groups

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