A compound having a structure: (a) wherein D is I, -C=CH, or -C=C-R, R = alkyl or aryl, and X is selected from the group consisting of: R 1, independently, is H, alkyl, or aryl, wherein, independently, m = 0, 1; n = 0 - 6; o = 0 - 6; p = 0, 1; q = 0 - 6; r = 2 - 6, wherein, independently, m = 0, 1; n = 0 - 6; o = 0 - 6; p = 1 - 6; q = 2- 6 and R 1, R 2, independently, are H, alkyl, or aryl, wherein, independently, m = 0, 1; n = 0 - 6; o = 0 - 6; p = 2 - 6, and wherein, independently, m = 0 - 6; n = 2 - 6, wherein independently, m = 0 - 6; n = 2 - 6, R 1, independently, is H, alkyl, or aryl, wherein, independently, m = 0 - 6; n = 1 - 6 o = 2 - 6, R 1, R 2, independently, are H, alkyl, or aryl wherein, independently, m = 1 - 6; η = 2 - 6, R 1, independently, is H, alkyl, or aryl, wherein, independently, m = 0, 1; η = 1 - 6; o = 2 - 6. (b) where W is and R is H, alkyl or aryl and m = 0, 1 - 6; D = I, -C≡CH, -C≡C-R where R = alkyl or aryl, wherein X is selected from the group consisting of: where m = 0, 1 - 6; n = 1 - 6; R 1 = H, alkyl or aryl where m, n independently are 1 - 6 or any combination of m and n where R is H, alkyl, or aryl and m = 0, 1 - 6; R 1, R 2 are independently H, alkyl or aryl and m, n, o independently are 1 - 6 η = 1 - 6; or any combination of m and η or a pharmaceutically acceptable salt thereof. (a) wherein D is I, -C=CH, or -C=C-R, R = alkyl or aryl, and X is selected from the group consisting of: R 1, independently, is H, alkyl, or aryl, wherein, independently, m = 0, 1; n = 0 - 6; o = 0 - 6; p = 0, 1; q = 0 - 6; r = 2 - 6, wherein, independently, m = 0, 1; n = 0 - 6; o = 0 - 6; p = 1 - 6; q = 2- 6 and R 1, R 2, independently, are H, alkyl, or aryl, wherein, independently, m = 0, 1; n = 0 - 6; o = 0 - 6; p = 2 - 6, and wherein, independently, m = 0 - 6; n = 2 - 6, wherein independently, m = 0 - 6; n = 2 - 6, R 1, independently, is H, alkyl, or aryl, wherein, independently, m = 0 - 6; n = 1 - 6 o = 2 - 6, R 1, R 2, independently, are H, alkyl, or aryl wherein, independently, m = 1 - 6; η = 2 - 6, R 1, independently, is H, alkyl, or aryl, wherein, independently, m = 0, 1; η = 1 - 6; o = 2 - 6. R 1, independently, is H, alkyl, or aryl, wherein, independently, m = 0, 1; n = 0 - 6; o = 0 - 6; p = 0, 1; q = 0 - 6; r = 2 - 6, wherein, independently, m = 0, 1; n = 0 - 6; o = 0 - 6; p = 1 - 6; q = 2- 6 and R 1, R 2, independently, are H, alkyl, or aryl, wherein, independently, m = 0, 1; n = 0 - 6; o = 0 - 6; p = 2 - 6, and wherein, independently, m = 0 - 6; n = 2 - 6, wherein independently, m = 0 - 6; n = 2 - 6, R 1, independently, is H, alkyl, or aryl, wherein, independently, m = 0 - 6; n = 1 - 6 o = 2 - 6, R 1, R 2, independently, are H, alkyl, or aryl wherein, independently, m = 1 - 6; η = 2 - 6, R 1, independently, is H, alkyl, or aryl, wherein, independently, m = 0, 1; η = 1 - 6; o = 2 - 6. wherein, independently, m = 0, 1; n = 0 - 6; o = 0 - 6; p = 1 - 6; q = 2- 6 and R 1, R 2, independently, are H, alkyl, or aryl, wherein, independently, m = 0, 1; n = 0 - 6; o = 0 - 6; p = 2 - 6, and wherein, independently, m = 0 - 6; n = 2 - 6, wherein independently, m = 0 - 6; n = 2 - 6, R 1, independently, is H, alkyl, or aryl, wherein, independently, m = 0 - 6; n = 1 - 6 o = 2 - 6, R 1, R 2, independently, are H, alkyl, or aryl wherein, independently, m = 1 - 6; η = 2 - 6, R 1, independently, is H, alkyl, or aryl, wherein, independently, m = 0, 1; η = 1 - 6; o = 2 - 6. wherein, independently, m = 0, 1; n = 0 - 6; o = 0 - 6; p = 2 - 6, and wherein, independently, m = 0 - 6; n = 2 - 6, wherein independently, m = 0 - 6; n = 2 - 6, R 1, independently, is H, alkyl, or aryl, wherein, independently, m = 0 - 6; n = 1 - 6 o = 2 - 6, R 1, R 2, independently, are H, alkyl, or aryl wherein, independently, m = 1 - 6; η = 2 - 6, R 1, independently, is H, alkyl, or aryl, wherein, independently, m = 0, 1; η = 1 - 6; o = 2 - 6. R 1, independently, is H, alkyl, or aryl, wherein, independently, m = 0 - 6; n = 1 - 6 o = 2 - 6, R 1, R 2, independently, are H, alkyl, or aryl wherein, independently, m = 1 - 6; η = 2 - 6, R 1, independently, is H, alkyl, or aryl, wherein, independently, m = 0, 1; η = 1 - 6; o = 2 - 6. R 1, R 2, independently, are H, alkyl, or aryl wherein, independently, m = 1 - 6; η = 2 - 6, R 1, independently, is H, alkyl, or aryl, wherein, independently, m = 0, 1; η = 1 - 6; o = 2 - 6. R 1, independently, is H, alkyl, or aryl, wherein, independently, m = 0, 1; η = 1 - 6; o = 2 - 6. (b) where W is and R is H, alkyl or aryl and m = 0, 1 - 6; D = I, -C≡CH, -C≡C-R where R = alkyl or aryl, wherein X is selected from the group consisting of: where m = 0, 1 - 6; n = 1 - 6; R 1 = H, alkyl or aryl where m, n independently are 1 - 6 or any combination of m and n where R is H, alkyl, or aryl and m = 0, 1 - 6; R 1, R 2 are independently H, alkyl or aryl and m, n, o independently are 1 - 6 η = 1 - 6; or any combination of m and η or a pharmaceutically acceptable salt thereof.