Abstract: A compound, or a salt thereof, having the formula wherein Y is n is 1 or 2; each R is independently H, alkyl, substituted alkyl, a polyether moiety, carboxyl, substituted carboxyl, carbamate, substituted carbonate, carbonyloxy, alkoxy, substituted alkoxy, haloalkyl, halogen, nitro, amino, aryloxy, cyano, hydroxyl, or sulfonyl; R1 is H, lower alkyl or aralkyl; R2 is selected from H, acyl, aralkyl, phosphonyl, —SO2R3; —C(O)R5; —C(O)OR7 or —C(O)NR9R10; R3; R5; R7; R9 and R10 independently are selected from H, lower alkyl, aralkyl or aryl; and R20 is selected from alkyl, substituted alkyl, a polyether moiety, carboxyl, substituted carboxyl, carbamate, substituted carbonate, carbonyloxy, alkoxy, substituted alkoxy, haloalkyl, halogen, nitro, amino, aryloxy, cyano, hydroxyl, or sulfonyl.

Abstract: A compound, or a salt thereof, having the formula wherein Y is n is 1 or 2; each R is independently H, alkyl, substituted alkyl, a polyether moiety, carboxyl, substituted carboxyl, carbamate, substituted carbonate, carbonyloxy, alkoxy, substituted alkoxy, haloalkyl, halogen, nitro, amino, aryloxy, cyano, hydroxyl, or sulfonyl; R1 is H, lower alkyl or aralkyl; R2 is selected from H, acyl, aralkyl, phosphonyl, —SO2R3; —C(O)R5; —C(O)OR7 or —C(O)NR9R10; R3; R5; R7; R9 and R10 independently are selected from H, lower alkyl, aralkyl or aryl; and R20 is selected from alkyl, substituted alkyl, a polyether moiety, carboxyl, substituted carboxyl, carbamate, substituted carbonate, carbonyloxy, alkoxy, substituted alkoxy, haloalkyl, halogen, nitro, amino, aryloxy, cyano, hydroxyl, or sulfonyl.

Abstract: Metallic clusters can be produced by contacting a metal salt such as a metal nitrate with an organic reducing agent. Metals can be selected from a group consisting of metals exhibiting octahedral coordination, and nitrates of the selected metal or metals are contacted with, for example nitrosobenzene. Binary, tertiary, or other clusters can be produced.

Abstract: Disclosed herein is a class of tunable phenylacetylene compounds as well as compositions and methods for their use as host compounds for ligand binding. In certain examples the hosts report binding events by exhibiting altered spectroscopic properties, such as different fluorescent emission spectra.

Abstract: Disclosed herein is a class of tunable phenylacetylene compounds as well as compositions and methods for their use as host compounds for ligand binding. In certain examples the hosts report binding events by exhibiting altered spectroscopic properties, such as different fluorescent emission spectra.

Abstract: Sorbent materials include a support, a base material comprising a first compound covalently bound to the support, and an active material reversibly bound to the base material, wherein the active material comprises a second compound with at least one functional group selected for binding a target species. The active material with the bound target species can be removed by washing the sorbent material with a solvent in which the second compound is soluble. The sorbent material can be regenerated by reversibly binding one or more second compounds having a selected functional group to the washed base material.

Abstract: Metallic clusters can be produced by contacting a metal salt such as a metal nitrate with an organic reducing agent. Metals can be selected from a group consisting of metals exhibiting octahedral coordination, and nitrates of the selected metal or metals are contacted with, for example nitrosobenzene. Binary, tertiary, or other clusters can be produced.

Abstract: Disclosed herein is a class of tunable phenylacetylene compounds as well as compositions and methods for their use as host compounds for ligand binding. In certain examples the hosts report binding events by exhibiting altered spectroscopic properties, such as different fluorescent emission spectra.