Hydrogen bonds/bonding coordination polymers

Polymer- complex solution Organic polymers interconnected by coordinate, van der Waals or hydrogen bonding Coordinating polymer... 

Supramolecular polymers can be classified based on the dominant noncovalent interaction that brings the building blocks together. In this way, it is possible to distinguish between hydrogen-bonded supramolecular polymers, n—Tt stacked supramolecular polymers, coordination polymers, and so on. However, in many cases, it is a combination of noncovalent interactions that determines the structure and properties of the resulting polymer. 

Figure 6 A view of showing the ID water strand hosted by ID coordination polymers in (c) [Cu(L49)Cl] H20, 66, and (d) [Cu(L44)Cl] H2O, 67. A perspective view of the single water chain hosted by hydrogen-bonded coordination complex [Cu(L50)(phen)] 2H2O, 68 (f).

As a scientific concept, supramolecular polymers have received increasing attention in recent years. The introduction of concepts from supramolecular chemistry in polymer science have led to the development of polymers in which the main chain is held together by noncovalent interactions such as hydrogen bonds, 7r-stacking, and coordination interactions. In the present chapter, we will discuss how the scientific developments in a specific class of supramolecular polymers — quadruple hydrogen-bonded supramolecular polymers — is now rapidly leading to applications that take advantage of the unique mechanical properties of these materials. 

Cu(II) and these complexes may by an octahederal structure due to formation of coordination bonds between the amide group and water of hydration with Cu(II) (2) the polymer chains form hydrogen bonds with... 

In fact this "unhydrolyzed" polyacrylamide sample is slightly charged and its low polyectrolyte character is confirmed by a slight difference of red values at pH 7 and 5, for salt free solutions. A really neutral polymer should be necessary to differentiate low effects of electrostatic interactions from non ionic interactions. coordination binding at low pH and hydrogen bonds at pH 7. Nevertheless, at this pH, the adsorption of the chain on Al(0H)3 aggregates can probably be considered as the main origin of the loss of viscosity. 

Phosphine complexes, osmium, 19 642 Phosphine coordination complexes, of uranium, 25 436 Phosphine derivatives, 19 28 Phosphine oxide(s), 11 495-496 19 66 predicted deviations from Raoult s law based on hydrogen-bonding interactions, 8 814t in salicylic acid manufacture, 22 8 Phosphine oxide diols/triols, 11 501 Phosphine selenides, 22 90 Phosphinic acid, 19 20, 54-55 Phosphinic anhydride, 11 499 Phosphinothricin acetyltransferase (PAT) proteins, 13 360 Phosphite esters, 19 20 Phosphites, in VDC polymer stabilization, 25 720... 

The network structures to be discussed will all involved hydrogen bonding as the supramolecular synthon. It should be noted however that other interactions such as coordinate bonds and host-guest interactions may also organise host molecules into network structures. Coordination polymers constructed from molecular hosts may involve functionalised calixarenes [8-11], cyclotriveratrylene [12], or cucurbituril [13]. Calixarenes have also been used to build up network structures via host-guest interactions [14,15]. It is also notable that volatile species may be trapped within the solid state lattice of calix[4] arene with a structure entirely composed of van der Waals interactions [16]. 

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