Regular macromolecule

Smallest constitutional unit, the repetition of which constitutes a regular macromolecule, a regular oligomer molecule, a regular block, or a regular chain. 

Regular macromolecule in which essentially all the configurational (repeating) units are identical. 

Regular macromolecule essentially comprising only one species of stereorepeating unit. 

Regular macromolecule that has an equal number of the possible configurational base units in a random sequence distribution. 

Polymer composed of regular macromolecules, regular star macromolecules, or regular comb macromolecules. 

A polymer composed of regular macromolecules, i.e. macromolecules the structure of which essentially comprises the repetition of a single constitutional unit with all units connected identically with respect to directional sense [9]. 

The concept of a unique hydrodynamic volume for all rodlike polymers was derived from examination of the Mark-Houwink constants, K and a, of the equation [rj ] = KMa. Macromolecules with values of a greater than unity are commonly accepted to be stiff or rigid rods. However, it was also found that such molecules (even for values of a less than unity) obey a relation illustrated by close concordance with the curve in Fig. lb (13) flexible, branched or otherwise irregular polymers, on the other hand, show dispersion around the upper part of the curve. The straight line curve in Fig. lb implies that the constants K and a are not independent parameters for the regular macromolecules to which they apply. Poly (a- and polyQJ-phenylethyl isocyanide) fall on this line the former has a value of a > 1 while the latter has a value a < 1 (14) both polymers give linear concentration dependence of reduced specific viscosity for fractionated samples... 

However, the results obtained in recent years have also established that the structural characteristics of the established dendrimer systems, such as the absence of a well-defined secondary structure, have limited the development of efficient abiotic enzyme mimics based on dendrimers. To achieve this ambitious goal, more efforts in dendrimer synthesis will be necessary. The use of dendritic catalysts in biphasic solvent systems has only just begun and appears to be a particularly fruitful field for further developments. These utilitarian aspects aside, it is the aesthetic attraction of these topologically highly regular macromolecules that continues to fascinate those working in the field of dendrimer catalysis. 

Depending on the fraction of anomalous units, metal-containing polymers can be divided into several types. According to the lUPAC nomenclature, when the content of these emits is low, the polymers can be classified as regular macromolecules, which consist mostly of identical repeating units linked to one another in the same way. When the content of rmit variability is relatively large, they are called irregular macromolecules. 

Note 2 A tactic macromolecule is a regular macromolecule, in which essentially all the eonfig-uralional repeating units are identical [1.2],... 

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