Homopolymer globule

Its derivation implies a succession of two formal procedures. First, it is necessary to color the homopolymer globule units marking every z -th unit by color of/ with the probability waj(rl) which coincides with the ratio of concentration of units Ma, at point rl to the overall concentration of all units at this point. As a result of such a coloring, the joint distribution for configurations and conformations of proteinlike heteropolymers is obtained. Integration of this distribution over coordinates of all units results in the desired molecular-structure distribution (Eq. 23). 

Fig. 5 Comparison of phase diagrams calculated for the melt of a proteinlike heteropolymer (b) with the phase diagram of a Markovian copolymer according to criterion II (a) and criterion I (c). Proteinlike heteropolymer consisting of / = 103 units is obtained for polymeranalogous reaction in a homopolymer globule at the value of the Thiele modulus h equal to 35... 

Kuchanov SI, Zharnikov TV, Khokhlov AR (2006) Phase behaviour of proteinlike copolymers obtained by polymeranalogous transformation of homopolymer globule (paper to be published)... 

Fig-1 Schematic representation of the CDSD chemical modification of a homopolymer chain a initial conformation formed by a homopolymer globule b chemical modification (surface coloring ) c resulting copolymer. Modified chain segments are shown in gray... 

Stage 2. Strong attraction between all monomeric units is switched on and a homopolymer globule (parent conformation) is formed (Fig. la). Of course, when we are speaking about real experiments, by switching on the attraction we should understand the jump of temperature, addition of poor solvent, etc. 

The results from the simulations are summarized in Table 1, which shows that the changes in chain conformation during the PAT can be divided into four major categories, depending on the initial conformation of the parent homopolymer (globule or coil) and the relative solubility of B (more or less soluble). 

Following this line, Zhdigovskaya et al ° compared the adsorption properties of copolymers with special adsorption-tuned primary stmctures (adsorption-tuned copolymers, ATCs) with those of truly RCPs and random-block copolymers. Monte Carlo simulations revealed that specific features of the ATC primary stmaure promoted the adsorption of ATC chains, in comparison with thdr random and random-block counterparts under the same conditions. In other words, the resultant copolymer sequence memorized the original state of the adsorbed homopolymer chain. Its statistical properties exhibit LRCs of the LF type similar to those found for PLCs obtained via PAT of a homopolymer globule. ... 

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