A sulfur-containing compound having the structure of Formula: B(-V'-S-R 1 -S-A') z1 (-V'-S-R 1 -SH) z2 wherein each R 1 is independently selected from C 2-6 alkanediyl, C 6-8 cycloalkanediyl, C 6-10 alkanecycloalkanediyl, C 5-8 heterocycloalkanediyl, and -[-(CHR 3) s -X-] q -(CHR 3) r -; wherein: each R 3 is independently selected from hydrogen and methyl; each X is independently selected from -O-, -S-, and -NR- wherein R is selected from hydrogen and methyl; s is an integer from 2 to 6; q is an integer from 1 to 5; and r is an integer from 2 to 10; each A' independently represents a moiety formed by the reaction of a compound A with a thiol group, wherein compound A is a compound having a terminal group that is reactive with a thiol group and a terminal group that promotes adhesion; wherein the group that promotes adhesion is selected from a silane having the structure -Si(R 5) y1 (OR 6) y2; wherein y1 is selected from 0, 1, and 2; y2 is selected from 1, 2, and 3; and the sum of y1 and y2 is 3; each R 5 is independently selected from C 1-4 alkyl; and each R 6 is independently selected from C 1-4 alkyl; a phosphonate, an amine, a carboxylic acid, and a phosphonic acid; B represents a core of a z-valent, alkenyl-terminated polyfunctional compound B(-V) z, wherein: z is the sum of z1 and z2, and z is an integer from 3 to 6; z1 is an integer from 1 to 4; z2 is an integer from 2 to 5; and each -V is a moiety comprising a terminal group that is reactive with a thiol group; and each -V'- represents a moiety formed by the reaction of each -V with a thiol group. each R 1 is independently selected from C 2-6 alkanediyl, C 6-8 cycloalkanediyl, C 6-10 alkanecycloalkanediyl, C 5-8 heterocycloalkanediyl, and -[-(CHR 3) s -X-] q -(CHR 3) r -; wherein: each R 3 is independently selected from hydrogen and methyl; each X is independently selected from -O-, -S-, and -NR- wherein R is selected from hydrogen and methyl; s is an integer from 2 to 6; q is an integer from 1 to 5; and r is an integer from 2 to 10; each A' independently represents a moiety formed by the reaction of a compound A with a thiol group, wherein compound A is a compound having a terminal group that is reactive with a thiol group and a terminal group that promotes adhesion; wherein the group that promotes adhesion is selected from a silane having the structure -Si(R 5) y1 (OR 6) y2; wherein y1 is selected from 0, 1, and 2; y2 is selected from 1, 2, and 3; and the sum of y1 and y2 is 3; each R 5 is independently selected from C 1-4 alkyl; and each R 6 is independently selected from C 1-4 alkyl; a phosphonate, an amine, a carboxylic acid, and a phosphonic acid; B represents a core of a z-valent, alkenyl-terminated polyfunctional compound B(-V) z, wherein: z is the sum of z1 and z2, and z is an integer from 3 to 6; z1 is an integer from 1 to 4; z2 is an integer from 2 to 5; and each -V is a moiety comprising a terminal group that is reactive with a thiol group; and each -V'- represents a moiety formed by the reaction of each -V with a thiol group. each R 3 is independently selected from hydrogen and methyl; each X is independently selected from -O-, -S-, and -NR- wherein R is selected from hydrogen and methyl; s is an integer from 2 to 6; q is an integer from 1 to 5; and r is an integer from 2 to 10; each A' independently represents a moiety formed by the reaction of a compound A with a thiol group, wherein compound A is a compound having a terminal group that is reactive with a thiol group and a terminal group that promotes adhesion; wherein the group that promotes adhesion is selected from a silane having the structure -Si(R 5) y1 (OR 6) y2; wherein y1 is selected from 0, 1, and 2; y2 is selected from 1, 2, and 3; and the sum of y1 and y2 is 3; each R 5 is independently selected from C 1-4 alkyl; and each R 6 is independently selected from C 1-4 alkyl; y1 is selected from 0, 1, and 2; y2 is selected from 1, 2, and 3; and the sum of y1 and y2 is 3; each R 5 is independently selected from C 1-4 alkyl; and each R 6 is independently selected from C 1-4 alkyl; a phosphonate, an amine, a carboxylic acid, and a phosphonic acid; B represents a core of a z-valent, alkenyl-terminated polyfunctional compound B(-V) z, wherein: z is the sum of z1 and z2, and z is an integer from 3 to 6; z1 is an integer from 1 to 4; z2 is an integer from 2 to 5; and each -V is a moiety comprising a terminal group that is reactive with a thiol group; and each -V'- represents a moiety formed by the reaction of each -V with a thiol group. z is the sum of z1 and z2, and z is an integer from 3 to 6; z1 is an integer from 1 to 4; z2 is an integer from 2 to 5; and each -V is a moiety comprising a terminal group that is reactive with a thiol group; and each -V'- represents a moiety formed by the reaction of each -V with a thiol group.