Hydrogen-Bonded Supramolecular Polymers

Abstract

Supramolecular polymers constructed by different kinds of low-molecularweight monomers or high-molecular-weight conventional polymeric species based on hydrogen bonding interactions have attracted more and more attention due to their fascinating and unconventional chemical and physical properties. A series of multiple hydrogen-bonding building blocks are described herein, which make the expansion of the research field of hydrogen-bonded supramolecular polymers and allow the fabrication of more new and functional supramolecular polymers. This chapter focuses on linear hydrogen-bonded supramolecular polymers and networks which are described in three parts. The first part is the main-chain supramolecular polymers, in which the polymeric backbone is constructed by noncovalently bonded lowmolecular-weight monomers. The second part is the conventional polymer-based supramolecular polymers, in which the main polymeric backbone part is constructed by covalently bonded conventional polymer, but functionalized by hydrogen-bonding motifs. The last part is supramolecular polymers constructed by orthogonal hydrogen bonding-driven self-assembly and other noncovalent interactions. IntroductionIn view of the reversible and dynamic nature of noncovalent interactions, supramolecular polymers have attracted much attention in recent years as they not only possess conventional polymeric properties, but also show new distinct material properties, which ensure their potential application in a broad range of fields [1][2][3][4][5]. The secondary interactions involved in the construction of the supramolecular structures include hydrogen bonding, metal-ligand coordination, π-π stacking, ionic interaction, and host-guest interaction etc. Each of these noncovalent interactions

Hydrogen‐Bonded Crystalline Molecular Machines with Ultrafast Rotation and Displacive Phase Transitions

“…[29] The directional nature of hydrogen bonds can be used to generate novel structuresw ith ag reat deal of complexity. [30] The directionality and cooperativity of this supramolecular interaction have been successfully employed in the solid state to create cocrystals with emergentp hysicochemical properties not present in the initial components. [31] By using this strategy, ac ocrystalline rotor,w ith an unsubstituted carbazole stator and aD ABCO rotator,h as been recently reported by us, showing dynamics at the molecular and macroscopic scales.…”

“…The directional nature of hydrogen bonds can be used to generate novel structures with a great deal of complexity . The directionality and cooperativity of this supramolecular interaction have been successfully employed in the solid state to create cocrystals with emergent physicochemical properties not present in the initial components .…”

Influences of structure and multi-intermolecular forces on rheological and oil displacement properties of polymer solutions in the presence of Ca2+/Mg2+

“…For hydrogen bonding, the involved hydrogen (H) is usually bonded to an electronegative atom such as nitrogen (N), oxygen (O) or uorine (F). 10 In a polyacrylamide solution, hydrogen bonding can result from the acylamino group. Nevertheless, this type of hydrogen bonding that is generated within the polymer molecule usually imposes a negative effect on the thickening ability for polyacrylamide.…”

Carboxylic Acid Ionic Modification of Castor‐Oil‐Based Polyurethanes Bearing Amine Groups: Chemically Tunable Physical Properties and Recyclability

“…Generally, supramolecular polymers can be divided into two classes: “main chain” supramolecular polymers, the polymeric backbone of which is constructed from noncovalently bonded small‐molecular‐weight monomers, and “side chain” supramolecular polymers, the polymeric backbone of which is already constructed by covalent bonds and the “side chain” is constructed by noncovalently bonded functional groups . The secondary interactions involved in the construction of supramolecular polymers include hydrogen bonding, metal–ligand coordination, π–π stacking, ionic interaction, and host–guest interaction . Each of these noncovalent interactions has unique bond strength and advantages.…”