Self-assembly of AB diblock copolymer confined in concentric-cylindrical nanopores was studied using MesoDyn simulation. Our calculation shows that in this confined geometry a zoo of exotic structures can be formed. These structures include bicontinuous phases like carbon nanotube, imperfect single helixes and double helixes. Moreover, the dependence of the chain conformation on the volume fraction, concentration, the interactions between blocks and the diameter of the cylindrical pore are investigated. The results of these simulations can be used to predict the diblock copolymer morphologies confined in concentric-cylindrical nanopores and should be helpful in designing polymeric nanomaterials in the future.

Three phosphatidylcholine (PC)-saturated C8/C18 stationary phases prepared using biologically representative membrane lipids (purchasable L-α-PC and pure 1,2-dipalmitoyl-sn-glycero-3-phosphatidylcholine) have been developed to compare with IAM (immobilized-artificial-membrane) and C8/C18 columns. These PC-coated stationary phases were found to be stable and reproducible for retention experiments. The retention characteristics of nucleobases on these coated phases deviate significantly from those on the IAM counterpart, but surprisingly similar to those of the underlying C8/C18 columns. An inter-phase model has been proposed and explored for interpretation of the results.