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Supramolecular chemistry novel architectures

In this review, CPOs constructed by covalent bonds are mainly focused on however, stable coordination bonds comparable to the stability of the covalent bonds have potential for future enhanced molecular design of novel CPOs. One representative is the bond between pyridine-type nitrogen and metal, which is widely used in supramolecular chemistry, that is, the cyclic supramolecular formation reaction between pyridine-substituted porphyrin and metal salts (Fig. 6d) [27,28]. Palladium salts are frequently used as the metal salts. From the viewpoint of the hard and soft acid and base theory (HSAB), this N-Pd coordination bond is a well-balanced combination, because the bonds between nitrogen and other group X metals, N-Ni and Ni-Pt coordination bonds, are too weak and too strong to obtain the desired CPOs, respectively. For the former, the supramolecular architectures tend to dissociate into pieces in the solution state, and for the latter. [Pg.76]

Dendrimers produced in this way will necessarily possess unique cavities, clefts, and void regions thereby facilitating the investigation of novel, dissymmetric architectures [polycelles = poly(micelles)] [214], and thus add the next chapter to this ever expanding field of supramolecular chemistry. [Pg.82]

We have come to the end of our journey through supramolecular chemistry. The bulk of the discussion in this chapter has centred upon the role of the metal ion in controlling the conformation of a co-ordinated ligand. We have seen that a variety of novel molecular architectures may be achieved from the simple principles that we have developed. [Pg.231]

CDC introduces into the chemistry of materials a basic shift with respect to constitutionally static materials and opens new perspectives in materials science. A rich variety of novel architectures, processes, and properties may be expected to result from the blending of supramolecular and molecular dynamic chemistry with materials chemistry, giving access to adaptive materials and adaptive technologies. [Pg.16]

A very promising approach comes from supramolecular chemistry (7). Recent work in this field has demonstrated that information stored in molecular components can be read out by non-covalent interactions to assemble the final architectures using hydrogen-bonding (15-18), metal-ligand (19-21) and cation (22) interactions. A number of described systems contain infinite lattices or exist only in the solid state (23,24). Further development requires to construct novel components which may assemble novel architectures presenting desired properties. [Pg.249]

The construction of novel coordination polymers is a current interest in the field of supramolecular chemistry and crystal engineering, stemming from their potential applications as frinctional materials as well as their intriguing variety of architectures and molecular topologies. In particular, solid materials with either helical or chiral structures are of intense interest in chemistry and material science. Although solid materials with imusual structures are expected to increase in number, the exploration for preparing framework solids with chiral structures still remains a challenge. Thermal analysis is a fundamental tool for the characterization of these new coordination polymeric compounds. [Pg.469]

In addition to exemplifying the way in which supramolecular chemistry can operate on multiple different levels, two-component systems have a vast degree of timability. Either one of the two molecular components can be subtly varied in order to ascertain the effects on nanoscale architecture and macroscopic behaviour, fii this way, there is the potential to access novel forms of fimctional gel-phase materials. [Pg.262]

A variety of other combinations of polar binding units and apolar architectural components may be imagined, making speleands a particularly attractive class of macropolycyclic systems. This combination is of prime importance for the design of a variety of novel, efficient and selective molecular receptors of the speleand type, adding another facet to supramolecular chemistry. [Pg.181]

The reviews collected in this book convey some of the themes recurrent in nano-colloid science self-assembly, constraction of supramolecular architecture, nanoconfmement and compartmentalization, measurement and control of interfacial forces, novel synthetic materials, and computer simulation. They also reveal the interaction of a spectrum of disciplines in which physics, chemistry, biology, and materials science intersect. Not only is the vast range of industrial and technological applications depicted, but it is also shown how this new way of thinking has generated exciting developments in fundamental science. Some of the chapters also skirt the frontiers, where there are still unanswered questions. [Pg.682]


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See also in sourсe #XX -- [ Pg.246 ]




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