Internal distances in short polyelectrolytes: A Monte Carlo study

Screening in Short Polyelectrolyte Chains. A Monte Carlo Study

“…For C = 0, it is apparent that the slope of the curve for D (5) is steeper than that for D (4) and that of D (4) is steeper than that of D (3) etc. It is interesting to note that in Figure , , and 6 of ref , we found that, when we divided D ( n ) by n 2 ( n 2 is the squared end-to-end distance at the rodlike maximum stretch), chains of small n are relatively more stretched (less flexible) than chains of large n , i.e., the values of the “normalized” D ( n ) are higher for n = 2 than for n = 3 and those of n = 3 are higher than for n = 4 etc. We find this phenomenon to be paradoxical to what was found, namely, that small chains are more bent than long ones (ref a and Figure 8 in ref ).…”

“…Internal Distances with Added Salt. Mean squared distances of all subchains of n links were denoted as D ( n ) and discussed in detail in ref . D (2), for example, is the mean square end-to-end distance of two links.…”

“…c See ref . d See ref . e These parameters are listed for two cases: C = 0 M and C = 1 M of “added salt” (see ref ) for various ranges of λ (Å).…”

“…In recent articles − we studied the polyelectrolyte thermal effect, i.e., the unfolding of a charged polymer chain caused by temperature decrease. A screening effect was found in that increased salt concentration was shown to diminish the unfolding process by screening .…”

“…In ref we defined the parameter P li , the unkink probability for each three-bead segment of a chain, and investigated its behavior as a function of λ for bare polyelectrolyte chains at C = 0. In this article we study the values of P li for C ≠ 0.…”