A composition of matter comprising: or or or or or or or or or or or or wherein, R 1 and R 2 each, independently, include a hydrocarbyl group, 4-hydroxyphenyl, 4-allyloxyphenyl, 4-propargyloxyphenyl, 3-acetamido-4-hydroxyphenyl, 3-amino-4-hydroxyphenyl, 4-aminophenyl, 3-acetamido-4-allyloxyphenyl, 3-acetamido-4-propargyloxyphenyl, 3-nitro-4-hydroxyphenyl, 3-nitro-4-allyloxyphenyl, 3-nitro-4-propargyloxyphenyl, 4-aminophenyl, 4-allylaminophenyl, 4-diallylaminophenyl, 4-propargylaminophenyl, 4-dipropargylaminophenyl, 4-allyloxy-3-allylaminophenyl, 4-allyloxy-3-diallylaminophenyl, 4-propargyloxy-3-dipropargylaminophenyl, 4-maleimidophenyl, 4-hydroxy-3-maleimidophenyl, 4-acrylamidophenyl, 4-methacrylamidophenyl, 4-(2-methoxy-2-oxoethoxy)phenyl, or 4-(4-(methoxycarbonyl)benzamidophenyl)phenyl, or a silyl group; in addition R 1 and R 2 may collectively form a bridging group; E 1 , E 2 , and E 3 , each, independently, include N, O, or S atoms; G1 includes a group linking E 1 , E 2 , and E 3 ; and G 1 includes a hydrocarbyl group, or a silyl group, or G 1 , E 1 , E 2 , and E 3 together constitute an iminodiacetate anion ligand; or wherein R 3 includes a hydrocarbyl group, a heteroaryl group, 4-hydroxyphenyl, 4-allyloxyphenyl, 4-propargyloxyphenyl, 3-acetamido-4-hydroxyphenyl, 3-amino-4-hydroxyphenyl, 4-aminophenyl, 3-acetamido-4-allyloxyphenyl, 3-acetamido-4-propargyloxyphenyl, 3-nitro-4-hydroxyphenyl, 3-nitro-4-allyloxyphenyl, 3-nitro-4-propargyloxyphenyl, 4-aminophenyl, 4-allylaminophenyl, 4-diallylaminophenyl, 4-propargylaminophenyl, 4-dipropargylaminophenyl, 4-allyloxy-3-allylaminophenyl, 4-allyloxy-3-diallylaminophenyl, 4-propargyloxy-3-dipropargylaminophenyl, 4-maleimidophenyl, 4-hydroxy-3-maleimidophenyl, 4-acrylamidophenyl, 4-methacrylamidophenyl, 4-(2-methoxy-2-oxoethoxy)phenyl, 4-(4-(methoxycarbonyl)benzamidophenyl)phenyl, or a silyl group; E 4 , E 5 , E 6 , and E 7 each, independently, include O, S, or N; G 2 is a group linking E 4 and E 5 and G 3 is a group linking E 6 and E 7 ; G 2 and G 3 include a hydrocarbyl group, or a silyl group; wherein the moiety or moieties borne by at least one of R 3 , G 2 , and G 3 is selected from a group consisting of: a terminally unsaturated hydrocarbyl group; a carboxylate ester group, an arsonic acid; an alkene conjugated to at least one ketone, an alkene conjugated to at least one aldehyde group, an alkene conjugated to at least one cyano group, an alkene conjugated to at least one nitro group, an alkene conjugated to at least one sulfonyl group, an alkene conjugated to at least one carboxylic ester group, and an alkene conjugated to at least one arsonic acid group; or wherein G 2 , E 4 and E 5 and/or G 3 , E 6 and E 7 constitute a 2-hydroxyisobutyric acid anion ligand, a 2-aminoisobutyric acid anion ligand, a 3-allyloxy-1,2-propanediol ligand, a 3-amino-4-hydroxyphenylarsonic acid anion ligand, an arsphenamine ligand, a 3-amino-4-hydroxyphenylarsonic acid anion ligand, or a 2-(tert-butylamino)ethanol ligand; or wherein R 4 and R 5 each, independently, include hydrogen, a hydrocarbyl group, or a silyl group, wherein E 8 and E 9 each, independently, represent O, S, or N, wherein G 4 is a group linking E 8 and E 9 and, G 4 includes a hydrocarbyl group, a silyl group, an alkenyl group, or an alkynyl group, and wherein one or more moieties borne by at least one of R 4 , R 5 , and G 4 is selected from a group consisting of: a terminally unsaturated hydrocarbyl group; a carboxylate ester group, an arsonic acid; an alkene conjugated to at least one ketone, an alkene conjugated to at least one aldehyde group, an alkene conjugated to at least one cyano group, an alkene conjugated to at least one nitro group, an alkene conjugated to at least one sulfonyl group, an alkene conjugated to at least one carboxylic ester group, and an alkene conjugated to at least one arsonic acid group. <EOS>