Effect of Component Mobility on the Properties of Macromolecular [2]Rotaxanes

Chen, Zhe; Aoki, Daisuke; Uchida, Satoshi; Marubayashi, Hironori; Nojima, Satoshi; Takata, Toshikazu

doi:10.1002/ange.201510953

Cited by 10 publications

(2 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To evaluate the effect of the component mobility in M2R, the crystallinity of the axle polymer (PVL) as a suitable probe that is greatly affected by the component mobility was measured by differential scanning calorimetry. 55 Table 1 summarizes the synthesis of M2Rs with different axle chain lengths, as well as their thermal properties characterized by differential scanning calorimetry ( Figure 10). In Table 1, the 10 in M2R10, for example, indicates the degree of polymerization (DP = 10) calculated by 1 H nuclear magnetic resonance.…”

Section: Characterization Of M2rmentioning

confidence: 99%

“…56 However, the present dynamic structural change originating from the mechanical linkage is very interesting from the viewpoint of polymer rheology. 55,92 MULTIPLEX LINKING DIRECTED TOWARD MOVABLE CROSSLINKS THROUGH ROTAXANE LINKAGE The dynamic systems utilizing the mobile or switching function of rotaxane mentioned above can also be observed in rotaxane crosslinked polymers (RCPs) with rotaxane structures at the crosslink points and where the polymer chains are not fixed at the crosslink points. The interesting properties of RCPs, such as high swellability, stretchability and stress-relaxing function, mainly result from the high mobility of the polymer chains at the crosslink point.…”

Section: Topology-transformable Polymersmentioning

confidence: 99%

See 1 more Smart Citation

Topology-transformable polymers: linear–branched polymer structural transformation via the mechanical linking of polymer chains

Takata

Aoki

2017

Polym J

Self Cite

View full text Add to dashboard Cite

In this review article, we discuss the synthesis and dynamic nature of macromolecular systems that have mechanically linked polymer chains capable of undergoing a topology transformation driven by a rotaxane molecular switch. The rotaxane linking of polymer chains plays a crucial role in these systems. A linear polymer possessing a crown ether/sec-ammonium salt-type [1] rotaxane moiety at the axle chain terminal was prepared via the rotaxane linking of a single polymer chain. A linear-cyclic polymer topology transformation was achieved via the movement of the wheel component from one end to the other end of the axle component using the rotaxane macromolecular switch function. The successful synthesis of a macromolecular [2]rotaxane (M2R) possessing a single polymer axle and one crown ether wheel led to a variety of unique applications, such as the development of topology-transformable polymers and the synthesis of rotaxane crosslinked polymers (RCPs). The introduction of a polymer chain to the wheel component of M2R (rotaxane linking of two polymer chains) produced a rotaxane-linked AB block copolymer that transformed its topology from linear to branched. Furthermore, a rotaxane-linked three-component polymer and an ABC triblock copolymer were synthesized and transformed to the corresponding 3-arm star (co)polymers, and the transformation was confirmed by measuring the hydrodynamic volume change. The structural transformation of 4-arm and 6-arm star polymers was also accomplished using the dynamic mobility of a similar rotaxane. As a useful application, M2R-based vinylic crosslinkers (RCs) were prepared and applied to the synthesis of RCPs, whereby the addition of RCs into radical polymerization systems of vinyl monomers afforded polymers with excellent toughness by enhancing both of tradeoff properties that cannot be achieved using typical covalent crosslinkers.

show abstract

Section: Characterization Of M2rmentioning

confidence: 99%

Section: Topology-transformable Polymersmentioning

confidence: 99%

Topology-transformable polymers: linear–branched polymer structural transformation via the mechanical linking of polymer chains

Takata

Aoki

2017

Polym J

Self Cite

View full text Add to dashboard Cite

show abstract

Ring Shuttling Controls Macroscopic Motion in a Three‐Dimensional Printed Polyrotaxane Monolith

Lin

Hou

2017

Angewandte Chemie

View full text Add to dashboard Cite

Amplification of molecular motions into the macroscopic world has great potential in the development of smart materials.D emonstrated here is an approach that integrates mechanically interlocked molecules into complex three-dimensional (3D) architectures by direct-write 3D printing.T he design and synthesis of polypseudorotaxane hydrogels,w hich are composed of a-cyclodextrins and poly(ethylene oxide)poly(propylene oxide)-poly(ethylene oxide) (PEO-PPO-PEO) triblockc opolymers,a nd their subsequent fabrication into polyrotaxane-based lattice cubes by 3D printing followed by post-printing polymerization are reported. By switching the motion of the a-cyclodextrin rings between random shuttling and stationary states through solvent exchange,t he polyrotaxane monolith not only exhibits macroscopic shape-memory properties but is also capable of converting the chemical energy input into mechanical work by lifting objects against gravity.Supportinginformation and the ORCID identification number(s) for the author(s) of this article can be found under: http://dx.

show abstract

Cyclodextrin‐Based [3]Rotaxane‐Crosslinked Fluorescent Polymer: Synthesis and De‐Crosslinking Using Size Complementarity

2018

Self Cite

View full text Add to dashboard Cite

show abstract

Effect of Component Mobility on the Properties of Macromolecular [2]Rotaxanes

Cited by 10 publications

References 38 publications

Topology-transformable polymers: linear–branched polymer structural transformation via the mechanical linking of polymer chains

Topology-transformable polymers: linear–branched polymer structural transformation via the mechanical linking of polymer chains

Ring Shuttling Controls Macroscopic Motion in a Three‐Dimensional Printed Polyrotaxane Monolith

Cyclodextrin‐Based [3]Rotaxane‐Crosslinked Fluorescent Polymer: Synthesis and De‐Crosslinking Using Size Complementarity

Contact Info

Product

Resources

About