| abstract |
A water-based ink comprising a diacetylene monomer, a hydrochromic polydiacetylene paper prepared using the ink, and uses therefor are provided. The water-based ink includes a diacetylene monomer, and a solvent mixture comprising water and an alcohol. The diacetylene monomer has a ionic functional group represented by R+X−, wherein X− is F−, Cl−, Br−, I−, PF6−, BF4−, bis(trifluoromethane)sulfonimide (TFSI) (Tf2N−), trifluoromethanesulfonate (TfO−), SCN−, or CH3COO−, and R+ is N+—R1-heterocyclic quaternary ammonium. |