Journal ArticleDOI
Reversible Polymers Formed from Self-Complementary Monomers Using Quadruple Hydrogen Bonding
Rint P. Sijbesma,Felix Hugo Beijer,Felix Hugo Beijer,Luc Brunsveld,Luc Brunsveld,B. J. B. Folmer,B. J. B. Folmer,J. H. K. Ky Hirschberg,J. H. K. Ky Hirschberg,Ronald Frans Maria Lange,Ronald Frans Maria Lange,Jimmy K. L. Lowe,Jimmy K. L. Lowe,E. W. Meijer,E. W. Meijer +14 more
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TLDR
2-ureido-4-pyrimidone that dimerize strongly in a self-complementary array of four cooperative hydrogen bonds were used as the associating end group in reversible self-assembling polymer systems.Abstract:
Units of 2-ureido-4-pyrimidone that dimerize strongly in a self-complementary array of four cooperative hydrogen bonds were used as the associating end group in reversible self-assembling polymer systems. The unidirectional design of the binding sites prevents uncontrolled multidirectional association or gelation. Linear polymers and reversible networks were formed from monomers with two and three binding sites, respectively. The thermal and environmental control over lifetime and bond strength makes many properties, such as viscosity, chain length, and composition, tunable in a way not accessible to traditional polymers. Hence, polymer networks with thermodynamically controlled architectures can be formed, for use in, for example, coatings and hot melts, where a reversible, strongly temperature-dependent rheology is highly advantageous.read more
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PatentDOI
Shape memory polymers
Robert Langer,Andreas Lendlein +1 more
TL;DR: A very broad, additional spectrum of possible applications for intelligent polymers that covers an area from minimally invasive surgery, through high-performance textiles, up to self-repairing plastic components in every kind of transportation vehicles.
Journal ArticleDOI
Functional Supramolecular Polymers
TL;DR: The specific features of supramolecular polymers that can lead to applications in a variety of fields are reviewed, including: materials—in which processability and self-healing properties are of interest; biomedicine— in which the concerns are dynamic functionality and biodegradability; and hierarchical assembly and electronic systems—with an interest in unidirectionality of charge flow.
Journal ArticleDOI
Self-healing and thermoreversible rubber from supramolecular assembly
TL;DR: The design and synthesis of molecules that associate together to form both chains and cross-links via hydrogen bonds and the system shows recoverable extensibility up to several hundred per cent and little creep under load are designed and synthesized.
Journal ArticleDOI
Functional liquid-crystalline assemblies: self-organized soft materials.
TL;DR: New approaches to the functionalization of liquid crystals are described and it is shown how the design ofliquid crystals formed by supramolecular assembly and nano-segregation leads to the formation of a variety of new self-organized functional materials.
Journal ArticleDOI
High-water-content mouldable hydrogels by mixing clay and a dendritic molecular binder
Qigang Wang,Justin L. Mynar,Masaru Yoshida,Eunji Lee,Myongsoo Lee,Kou Okuro,Kazushi Kinbara,Takuzo Aida +7 more
TL;DR: It is reported that water and clay, when mixed with a very small proportion of organic components, quickly form a transparent hydrogel, which can be moulded into shape-persistent, free-standing objects owing to its exceptionally great mechanical strength, and rapidly and completely self-heals when damaged.
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Journal ArticleDOI
Reptation of living polymers: dynamics of entangled polymers in the presence of reversible chain-scission reactions
TL;DR: Etude theorique de la dynamique de the relaxation de contrainte dans un systeme dense de polymeres vivants as mentioned in this paper, e.g.
Journal ArticleDOI
Responsive gels formed by the spontaneous self-assembly of peptides into polymeric β-sheet tapes
Amalia Aggeli,M. Bell,Neville Boden,Jeffery N. Keen,Peter F. Knowles,Tom McLeish,Maureen Pitkeathly,Sheena E. Radford +7 more
TL;DR: This work describes the construction of oligopeptides, rationally designed or based on segments of native proteins, that aggregate in suitable solvents into long, semi-flexible β-sheet tapes and suggests that it should be possible to engineer a wide range of properties in these gels by appropriate choice of the peptide primary structure.