Selbstkomplementäre Vier-Wasserstoffbrücken-Bindungsmotive als funktionales Prinzip: von dimeren Übermolekülen zu supramolekularen Polymeren

Cross‐Hybridization of Pyridinedicarboxamide Helical Strands and Their N‐Oxides

“…In DNA, this is expressed by the fact that the basic level of complementarity—canonical A/T and G/C base pairing—is indeed heterologous and not homologous. However, most synthetic oligomers that hybridize into double‐stranded structures reported to date are homodimers, including most of the numerous helicates,5 hydrogen‐bonded linear tapes6–10 and helices,11 as well as the aromatic oligoamides (AOAs) derived from 2,6‐diaminopyridine and 2,6‐pyridinedicarboxylic acid that we have been studying 12. 13 There are only a few examples of heterodimerized oligomeric strands that form helicates14 and hydrogen‐bonded structures,4, 15, 16 as well as of hybrids based on the assembly of electron‐poor and electron‐rich aromatic compounds,17 but among these, less than a handful (two to our knowledge)14, 16 possess a well‐characterized structure.…”

Functional Liquid‐Crystalline Assemblies: Self‐Organized Soft Materials

“…[131] The early approaches to the fabrication of supramolecular liquid-crystal polymers have initiated the field of non-liquidcrystal supramolecular polymers (Figure 13 A). [42,63,132] Meijer and co-workers reported that a quadruple hydrogen bond is useful for the construction of stable supramolecular polymers because of its high association constant. [42,[133][134][135] Monomer 34 possessing two ureidopyrimidone units forms stable and elongated polymer complexes (Figure 13 A).…”

Photo‐Controlled Macroscopic Self‐Assembly Based on Photo‐Switchable Hetero‐Complementary Quadruple Hydrogen Bonds

“…As a fundamental class of noncovalent interactions, complementary multiple H‐bonding interactions have been extensively used as supramolecular toolkits in a wide range of application fields from molecular self‐assembly systems to dynamic polymeric materials, [33–43] by taking advantages of their high association affinity, high directionality, diverse bonding modes, as well as the reversible H‐binding behavior upon various external stimuli including temperature, [44,45] pH, [46–48] redox, [49–51] light, [52–59] and so on. Nevertheless, comparing to the various sophisticated photo‐switchable molecular scale H‐bonded self‐assembly systems, [52–59] to the best of our knowledge, the photo‐switchable H‐bonded MSA systems have not been reported so far.…”