Patent ID: 7829698

Claim:
A method of preparing a nanoparticle, which comprises (a) dissolving a cucurbituril derivative of Formula 1 below in an organic solvent to obtain a reaction solution; (b) adding water to the reaction solution followed by dispersing; (c) distilling the dispersed solution in a temperature range from a boiling point of the organic solvent to 100° C. to remove the organic solvent; and (d) cooling the resultant solution to room temperature: wherein X is O, S, or NH; A l and A 2 are respectively OR 1 and OR 2 , SR 1 and SR 2 , or NHR 1 and NHR 2 ; R 1 and R 2 are each independently selected from the group consisting of hydrogen, a substituted or unsubstituted alkyl of C 1 -C 30 , a substituted or unsubstituted alkenyl of C 2 -C 30 , a substituted or unsubstituted alkynyl of C 2 -C 30 , a substituted or unsubstituted carbonylalkyl of C 2 -C 30 , a substituted or unsubstituted thioalkyl of C 1 -C 30 , a substituted or unsubstituted alkylthiol of C 1 -C 30 , a substituted or unsubstituted alkoxy of C 1 -C 30 , a substituted or unsubstituted hydroxyalkyl of C 1 -C 30 , a substituted or unsubstituted alkylsilyl of C 1 -C 30 , a substituted or unsubstituted aminoalkyl of C 1 -C 30 , a substituted or unsubstituted aminoalkylthioalkyl of C 1 -C 30 , a substituted or unsubstituted cycloalkyl of C 5 -C 30 , a substituted or unsubstituted heterocycloalkyl of C 2 -C 30 , a substituted or unsubstituted aryl of C 6 -C 30 , a substituted or unsubstituted arylalkyl of C 6 -C 20 , a substituted or unsubstituted heteroaryl of C 4 -C 30 , and a substituted or unsubstituted heteroarylalkyl of C 4 -C 20 ; and n is an integer of 4 to 20: wherein the nanoparticle is formed by aggregation of the cucurbituril derivatives of Formula 1; and wherein the nanoparticle has a particle size of 10 to 1,000 nm and has a cavity newly formed by the aggregation.