text: The stability of a supramolecular polymer can be described using the association constant, K.  When K ≤ 10M, the polymeric aggregates are typically small in size and do not show any interesting properties and when K≥ 10 M, the supramolecular polymer behaves just like covalent polymers due to the lack of dynamics. So, an optimum K = 10–10Mneed to be attained for producing functional supramolecular polymers.  The dynamics and stability of the supramolecular polymers often affect by the influence of additives (e.g. co-solvent or chain-capper).  When a good solvent, for instance chloroform, is added to a supramolecular polymer in a poor solvent, for instance heptane, the polymer disassembles. However, in some cases, cosolvents contribute the stabilization/destabilization of supramolecular polymer.  For instance, supramolecular polymerization of a hydrogen bonding porphyrin-based monomer in a hydrocarbon solvent containing a minute amount of a hydrogen bond scavenging alcohol shows distinct pathways, i.e. polymerization favored both by cooling as well as heating, and is known as "thermally bisignate supramolecular polymerization".  In another example, minute amounts of molecularly dissolved water molecules in apolar solvents, like methylcyclohexane, become part of the supramolecular polymer at lower temperatures, due to specific hydrogen bonding interaction between the monomer and water.