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Synthetic helical polymers are interesting for applications including catalysis, chirality recognition, and templating assembly of functional molecules. Some of these polymers, exhibit dynamic helicity: their conformations can randomly switch between left-and right-handed helical senses because of moderate inversion barriers. The helicity of dynamical polymers can be controlled [1] by" doping" their chain with small chiral groups. The influence of biasing groups on helicity has been investigated by mapping helical polymers onto generic 1D Ising models, which have explained [1] co-operative effects such as majority rules and sergeants-soldiers behavior. However 1D Ising models cannot describe the conformational properties of a polymer in three dimensional (3D) space. Therefore we develop a mesoscopic molecular model for dynamical helical polymers, combining the worm-like chain representation with special …