Side-Chain Supramolecular Polymers Employing Conformer Independent Triple Hydrogen Bonding Arrays

Abstract

Derivatives of thymine have been extensively used to promote supramolecular materials assembly. Such derivatives can be synthetically challenging to access and may be susceptible to degradation. The current article uses a conformer-independent acceptor–donor–acceptor array (ureidopyrimidine) which forms moderate affinity interactions with diamidopyridine derivatives to effect supramolecular blend formation between polystyrene and poly(methyl methacrylate) polymers obtained by RAFT which have been functionalized with the hydrogen bonding motifs.

Intra‐ and inter‐supramolecular complexation of poly(butyl methacrylate)‐co‐2‐(1,2,3‐triazol‐4‐yl)pyridine copolymers induced by CoII, FeII, and EuIII ions monitored by molecular hydrodynamics methods

“…The integration of macromolecular and supramolecular chemistries has been demonstrated to be a remarkable approach toward smart materials with stimuli-responsive, selfhealing, and functional properties. [8][9][10] In particular, copolymers containing supramolecular entities as well as cross-linking units have become appealing systems in material science due to their potential to assemble advanced materials with reversible and addressable properties, respectively, such as switchable adhesives and self-healing materials. [11][12][13][14][15][16][17][18] In a solution with multivalent metal ions, the linear polymer chains containing multidentate ligands as the side groups are able to form supramolecular structures.…”

Enhancement of microphase ordering and mechanical properties of supramolecular hydrogen-bonded polyurethane networks

“…[7][8][9][10] Numerous polyols have been harnessed as building blocks, however, from the range of commercially available isocyanates, methylene diphenyl diisocyanate (MDI) has found the most extensive use on account of its attractive chemistries and relatively low toxicity. 11,12 A recent development in PU chemistries has been the investigation of supramolecular polyurethane (SPU) networks [13][14][15][16][17][18] which are able to self-assemble through weak non-covalent interactions. [19][20][21][22][23][24][25][26][27] These materials are attractive on account of their thermo-reversible characteristics.…”

A systematic study of the effect of the hard end-group composition on the microphase separation, thermal and mechanical properties of supramolecular polyurethanes

“…In agreement with recent studies by Rowan and co-workers [39][40][41], we have found [42][43][44] that tough materials could be formed by addition of hydrogen bonding end-groups with low binding constants (between 1 and 45 M -1 ) [45] to relatively low molecular weight PUs (between 10,000 and 20,000 g/mol). These materials possess interesting temperature responsive properties whereby the degree of phase separation within the materials, and the temperature at which the polymers started to weaken, correlated to the binding constant of the end-group [2,7,22,46,47].…”