Polymers are systems where phenomena taking place at different length and time scales (ranging from few picoseconds to microseconds and beyond) are responsible for their global properties. Such scales are also coupled together due to the topology of the chain. Modelling such highly correlated systems is one of the challenges in molecular simulations. We develop new computational models and procedures to couple techniques able to sample only one or few of such scales.
[1] Di Pasquale, R. Gowers, P. Carbone, 2014, J. Comp. Chem., 2014, 35, 1199
[2] N. DiPasquale, P. Carbone, D. Marchisio, A. Barresi, Chem. Eng. Res. Des., 2013, 91, 2275-2290
[3] N. DiPasquale, D. Marchisio, P. Carbone, J. Chem. Phys, 2012, 137, 164111
Membranes comprising or incorporating graphene or functionalized graphene show remarkable potential for selective uptake of ions and other organic molecules. We, in collaboration with other groups in UoM, are trying to understand the mechanism of transport of such molecules within the graphene capillary and device new methods to control its width.
[1] R. K. Joshi, P. Carbone, F. Chao, V. G. Kravets, H. A . Wu, I. V. Grigorieva, A. K. Geim, R. R. Nair, Science, 2014, 343, 752
Vesicles formed by amphiphilic copolymers exhibit good mechanical properties making them very appealing for use as bio-nanodevices when compared with liposomes, which are structurally fragile and cannot circulate in blood over long time periods. However the structure-biological activity of such polymers is not known and their toxicity is difficult to predict. We develop atomistic and coarse-grained models for such polymers to rationalize their behavior.
[1] Nawaz, S et al.. Soft Matter, 2012, 8, 2744
[2] Redhead, M., et al., Pharmaceutical Research, 2012, 29:1908
[3] Nawaz, S.; Carbone, P. J. Phys. Chem. B, 2014,118, 1648
The prediction of the stability of macromolecules at fluid interfaces is pivotal for many fundamental and technological problems such as self-assembly, polymerization reactions or engineering process. Using atomistic and coarse-grained models we aims at developing a relation between the macromolecule structure and its interfacial stability.
[1] S. Nawaz, P. Carbone,, J. Phys. Chem. B 2011, 115, 42, 12019
[2] D. L. Cheung, P. Carbone, Soft Matter, 2013, 9, 6841
[3] T. Taddese, P. Carbone, D. L. Cheung, Soft Matter, 2015, 11, 81