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BEGIN:VEVENT
DTSTAMP:20260625T215135Z
DTSTART;VALUE=DATE-TIME:20161124T130000
DTEND;VALUE=DATE-TIME:20161124T140000
SUMMARY:Theory Seminar: Ivan Coluzza (Vienna): Design of patchy polymers:
  biomimetic self-knotting chains
TZID:Europe/London
UID:20161124-094d434557c2372c0157c3147f121c0e@warwick.ac.uk
CREATED:20161014T120442Z
DESCRIPTION:We present a novel theoretical framework within which we are 
 able to design new experimentally realisable materials with tuneable sel
 f-assembling properties. Our work takes inspiration from the results obt
 ained with our recently developed protein coarse graining procedure\, na
 mely the “Caterpillar� model [1\,2]. Based on these results we postulate
 d the “minimum valence principle" (MVP). According to the MVP in order f
 or a generalised bead-spring system to be designable and foldable\, it i
 s sufficient for the chain to have a sequence of different isotropic int
 eractions combined with directional interactions that further constrain 
 the configurational space. Based on this principle we introduced an opti
 mal set of modular sub-units\, and the definition of a design procedure 
 necessary to choose a string of the units that once bonded into a chain 
 will spontaneously fold to a specific target structure [3-5]. We show th
 at such structures can be highly non-symmetrical and posses interesting 
 topological properties fully controllable by the sequence of beads along
  the chain. Biomimetic patchy polymers represent a considerable step for
 ward in the synthesis of novel materials\, because they are based on a l
 imited alphabet of particles that can be reused and assembled\, practica
 lly\, in an infinite number of combinations. Artificial modular self ass
 embling systems such as this one are not available at the moment and the
  one we propose is the first of this kind. [1] Coluzza\, I. (2011). A co
 arse-grained approach to protein design: learning from design to underst
 and folding. PloS one\, 6(7)\, e20853. doi:10.1371/journal.pone.0020853 
 [2] Coluzza\, I. (2013). Transferable coarse-grained potential for de no
 vo protein folding and design. Submitted. [3] Coluzza\, I.\, & Dellago\,
  C. (2012). The configurational space of colloidal patchy polymers with 
 heterogeneous sequences. Journal of Physics: Condensed Matter\, 24(28)\,
  284111. doi:10.1088/0953-8984/24/28/284111 [4] Coluzza\, I.\, van Oostr
 um\, P. D. J.\, Capone\, B.\, Reimhult\, E.\, & Dellago\, C. (2012). Des
 ign and folding of colloidal patchy polymers. Soft Matter. doi:10.1039/c
 2sm26967h [5] Coluzza\, I.\, van Oostrum\, P. D. J.\, Capone\, B.\, Reim
 hult\, E.\, & Dellago\, C. (2013). Sequence Controlled Self-Knotting Col
 loidal Patchy Polymers. Physical Review Letters\, 110(7)\, 075501. doi:1
 0.1103/PhysRevLett.110.075501
LOCATION:PS1.28
URL:http://homepage.univie.ac.at/ivan.coluzza/Home_Page/Welcome.html
ATTACH:http://homepage.univie.ac.at/ivan.coluzza/Home_Page/Welcome.html
CATEGORIES:Theory Seminar
LAST-MODIFIED:20161117T173852Z
ORGANIZER;CN=Gareth Alexander:
END:VEVENT
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