Synthesis of an Immobilized Three-state Switchable Chiral Stationary Phase for HPLC Using a Metal Cation-responsive Optically Active Poly(phenylacetylene) Derivative and Its Chiral Recognition Ability

Stimuli-responsive synthetic helical polymers

“…38d). 225,226 The capacity of the MPA pendant group to interact selectively with monovalent and divalent metal ions was used by Freire and Riguera to explore the activation of the Sergeants and Soldiers effect in an axially racemic copolymer 227 series-poly-11 r -co-92 1Àr -made by a dormant Sergeant (11) and an achiral Soldier, that bears the anilide of diphenyl acetic acid (92) (Fig. 39).…”