Supramolecular polymers Two-dimensional polymer

supramolecular aggregates of (ca*m) cyanuric acid (ca) , melamine (m).

supramolecular assembly requires non-covalent interactions directing formation of 2d polymers relying on electrostatic interactions such hydrogen bonding , van der waals forces. design artificial assemblies capable of high selectivity requires correct manipulation of energetic , stereochemical features of non-covalent forces. benefits of non-covalent interactions reversible nature , response external factors such temperature , concentration. mechanism of non-covalent polymerization in supramolecular chemistry highly dependent on interactions during self-assembly process. degree of polymerization depends highly on temperature , concentration. mechanisms may divided 3 categories: isodesmic, ring-chain, , cooperative.

self-assembly of ptcdi–melamine supramolecular network. dotted lines represent stabilizing hydrogen bonds between molecules.

one example of isodesmic associations in supramolecular aggregates seen in figure 7, (ca*m) cyanuric acid (ca) , melamine (m) interactions , assembly through hydrogen bonding. hydrogen bonding has been used guide assembly of molecules two-dimensional networks, can serve new surface templates , offer array of pores of sufficient capacity accommodate large guest molecules. example of utilizing surface structures through non-covalent assembly uses adsorbed monolayers create binding sites target molecules through hydrogen bonding interactions. hydrogen bonding used guide assembly of 2 different molecules 2d honeycomb porous network under ultra high vacuum seen in figure 8. 2d polymers based on dna have been reported