Supramolecular Polymers

Abstract

I. Introduction 4071 II. The Term Supramolecular Polymers 4071 III. General Aspects of Supramolecular Polymers 4073 IV. Supramolecular Polymers Based on Hydrogen Bonding 4073 A. Strength of Hydrogen Bonds 4073 B. Hydrogen Bonding Enforced by Liquid Crystallinity 4075 C. Hydrogen Bonding Enforced by Phase Separation 4076 D. Strong Dimerization of Multiple Hydrogen-Bonding Units 4077 E. Ureidopyrimidinone-Based Polymers 4079 V. Supramolecular Polymers Based on Discotic Molecules 4081 A. Arene−Arene Interactions 4082 1. Triphenylenes 4082 2. Phthalocyanines and Porphyrins 4083 3. Helicenes 4084 4. m-Phenylene Ethynylene Oligomers 4084 5. Other Systems 4085 6. Chromonics 4086 B. Hydrogen Bonding 4086 C. Arene−Arene Interactions and Hydrogen Bonding 4087 1. Guanine and Pterine Derivatives 4087 2. Hydrogen-Bonded Pairs 4089 3. Complexation of Tetrazoles with 1,3,5-Tris (4,5-dihydroimidazol-2-yl)benzene 4089 4. C 3 -Symmetrical Discotic Molecules 4090 VI. Supramolecular Coordination Polymers and Miscellaneous Systems 4091 VII. Conclusions and Outlook 4094 VIII. Acknowledgments 4094 IX. References and Notes 4094

Porous Structures: In situ Porous Structures: A Unique Polymer Erosion Mechanism in Biodegradable Dipeptide‐Based Polyphosphazene and Polyester Blends Producing Matrices for Regenerative Engineering (Adv. Funct. Mater. 17/2010)

“…By examining nature’s own chemistry hydrogen bonding significantly contributes to formation of unique and highly defined architectures in biological systems such as in the folding of proteins. [10] The hydrophobicity that phenylphenoxy groups exert can retard the degradation of polyphosphazene and maintain structural integrity. Accordingly, a mixed-substituent polyphosphazene co-substituted with glycylglycine dipeptide and with phenylphenoxy side groups exploited these properties in this work.…”

Mechanochemistry in Polymers with Supramolecular Mechanophores

“…Hydrogen bonds are one of the most commonly utilized types of intermolecular interaction in the fabrication of supramolecular polymers because of their directional character and the ideal strength. [64][65][66][67] Furthermore, the associative character of a given supramolecular motif can be fine-tuned by controlling the number of hydrogen-bonding sites. The inherent reversible nature of hydrogen bonds bestows supramolecular polymers made from such motifs with adaptive characters such as thermo-, photo-, chemo-and mechanoresponsive properties.…”

“…The inherent reversible nature of hydrogen bonds bestows supramolecular polymers made from such motifs with adaptive characters such as thermo-, photo-, chemo-and mechanoresponsive properties. [64][65][66][67][68][69] In the last 15 years, a large number of hydrogen-bonding supramolecular polymers has been investigated. [70,71] Interestingly, however, only few reports have described mechanically active hydrogen bonds in supramolecular polymers with unambiguous experimental evidence that show dissociation and formation of hydrogen bonds in response to mechanical stimulation.…”

Novel Molecular Building Blocks Based on the Boradiazaindacene Chromophore: Applications in Fluorescent Metallosupramolecular Coordination Polymers

“…Coordination polymers represent a distinct group of supramolecular polymers, [1][2][3][4][5][6] which have attracted great attention in recent years. [7][8][9][10][11][12] The degree of polymerization in such polymers is primarily controlled by the concentration of the building blocks in solution and the strength of interaction between the ligand and the metal ion.…”