Supramolecular polymers have advanced significantly due to their multidisciplinary fusion. An explosive growth in their construction is caused by the infinite combination of supramolecular hosts such as cyclodextrins, 1-4 cucurbit[n]urils, 5-10 calix[n]arenes, and pillar[n]arenes and monomer units such as benzene-1,3,5-tricarboxamides, perylene bisimides, and porphyrins, since Lehn's discovery in 1990. The first supramolecular polymer was created via complementary hydrogen bonds between uracil and 2,6-diacetylaminopyridine. This milestone has been met with subsequent success in the development of self-assembled polyrotaxane and functional supramolecular gels. In 2006, Meijer et al. reported solvent-assisted nucleation upon supramolecular polymerization, which opened up new formation mechanisms for the design of rational monomeric cores. Thereafter, two significant approaches, living supramolecular polymerization and supramolecular chain polymerization were found to precisely control polymer lengths. These scientific backgrounds on supramolecular polymers established that supramolecular polymerization can be dynamically controlled by external stimuli such as solvents and photoirradiation.