A chemical composition comprising a linker agent and a compound comprising at least one UV-absorbing chromophore, wherein the linker agent is characterized by the general formula: ##STR00001## wherein X.sub.1 and X.sub.2 are the same or different, and at least one of X.sub.1 or X.sub.2 is a functional group that bonds with the compound comprising at least one UV-absorbing chromophore, and b+f.gtoreq.2, Y comprises an O, N, or S that is substituted or unsubstituted, each a, b, c, e and f is .gtoreq.0 and a+b+c+e+f.gtoreq.2, d is 0 or 1, n1 and n2 represent the number of hydrogen atoms required to complete the undesignated valencies, and m ranges from 1 to about 100 and each individual m unit may be the same or different.