Chiral molecule adsorption on helical polymers

Abstract

We present a lattice model for helicity induction on an optically inactive polymer due to the adsorption of exogenous chiral amine molecules. The system is mapped onto a one-dimensional Ising model characterized by an on-site polymer helicity variable and an amine occupancy one. The equilibrium properties are analyzed at the limit of strong coupling between helicity induction and amine adsorption and that of non-interacting adsorbant molecules. We discuss our results in view of recent experimental results.

Molten salt-supported polycondensation of optically active diacid monomers with an aromatic thiazole-bearing diamine using microwave irradiation

“…The use of optically active soluble macromolecule has attracted much attention of chemists because of their high potential applications as catalysis for asymmetric syntheses, enantiomeric separation, and chiral sensing [15–17] . The common way to prepare a chiral polymer is to attach only one chiral group per polymer.…”

Amplification of Chirality of the Majority-Rules Type in Helical Supramolecular Polymers: The Impact of the Presence of Achiral Monomers

“…In the former type of polymer, the monomer distribution is controlled by the thermodynamic equilibrium, whereas in the latter type, it is fixed a priori, and only the nature of the bonds between the monomers can change. In the problem of chirality induction through the reversible adsorption of chiral molecules onto achiral helical polymers, on the other hand, the distribution of chiral centers is not fixed. , In the current paper we apply a theoretical treatment that takes the same form as those used by the authors of refs and in the description of this type of chirality induction, to describe the same phenomenon in a different system, i.e., a solution of helical supramolecular polymers.…”

Territorial Developments Based on Graffiti: a Statistical Mechanics Approach

“…Lattice models have been extensively used in the physical sciences over the past decades to describe a wide variety of condensed matter equilibrium and non equilibrium phenomena see e.g., the reviews in [6,65,47]. Magnetization was the original application, but the list has grown to include structural transitions in DNA [38,1,54], polymer coiling [62,24], cellular automata [21,64], and gene regulation [52,35,61] to name a few. The resulting models are certainly simplified, but what they lack in detail is compensated by their amenability to analytical and computational treatment -and, occasionally, to exact solution.…”