Abstract: Compositions which comprise a gold nanoparticle, dithiolated diethylenetriamine pentaacetic acid (DTDTPA), and a thioctic acid terminated peptide, wherein the DTDTPA is directly linked to the gold nanoparticle surface via an Au—S bond, and wherein the thioctic acid terminated peptide is directly linked to the gold nanoparticle surface via an Au—S bond.

Abstract: Compositions which comprise a gold nanoparticle, dithiolated diethylenetriamine pentaacetic acid (DTDTPA), and a thioctic acid terminated peptide, wherein the DTDTPA is directly linked to the gold nanoparticle surface via an Au—S bond, and wherein the thioctic acid terminated peptide is directly linked to the gold nanoparticle surface via an Au—S bond.

Abstract: A multicomponent nanomaterial AuNP(DTDTPA)(Ga), where DTDTPA is an amino-carboxylate ligand (diethylene triamine pentaacetic acid, DTPA) linked to the surface of the Au nanoparticle (NP) via dithiol (DT) linkage. Another embodiment is a multicomponent nanomaterial AuNP(DTDTPA)(Ga) with a biomolecule attached. In preferred embodiments, the Ga is Ga-67 or Ga-68. Preferred synthesis methods are conducted at room temperature.

Abstract: A multidimensional nanoconstruct includes a three-dimensional thiolated protein, gelatin or polymer nanoparticle and exposed metallic nanoparticles bonded to outer surfaces of the particle. In a method of formation, number of metallic nanoparticles that attach to the carrier nanoparticle is controlled via microfluidics or via controlling the reactivity of the metallic nanoparticle and carrier nanoparticle.

Abstract: An embodiment of the invention is a peptide comprising four domains, wherein domain I consists of thioctyl or monocytl, domain II consists of 2 to 3 positively charged amino acids selected from the group consisting of lysine and arginine, domain III consists of a dimeric ethylene unit; and domain IV comprises the peptide with SEQ ID No. 1 or a sequence having at least 90% identity to SEQ ID No. I. The peptide is preferably attached to a gold nanostructure, preferably a gold nanorod to provide an EFGR kit. An EFGR detection kit of the invention employs a gold nanostructure attached to a peptide sequence, the peptide sequence includes a binding sequence with an affinity toward EGFR, a ligand bound to gold atoms of the nanorod, a positively charged amino acid that maintains activity of the binding sequence, and a unit that increases hydrophilicity of the peptide sequence.

Abstract: A multicomponent nanomaterial AuNP(DTDTPA)(Ga), where DTDTPA is an amino-carboxylate ligand (diethylene triamine pentaacetic acid, DTPA) linked to the surface of the Au nanoparticle (NP) via dithiol (DT) linkage. Another embodiment is a multicomponent nanomaterial AuNP(DTDTPA)(Ga) with a biomolecule attached. In preferred embodiments, the Ga is Ga-67 or Ga-68. Preferred synthesis methods are conducted at room temperature.

Abstract: The invention provides stabilized, biocompatible gold nanoparticles that are stabilized with material from epigallocatechin Gallate (EGCg), which is a polyphenols- or flavanoids-rich plant material that can be obtained from green tea. The EGCg is an antioxidant reducing agent derived from green tea. The gold nanoparticles of the invention can be radioactive or non radioactive and are formed via a simple room temperature fabrication method. Therapy and sensing methods are conducted with nanoparticles of the invention.

Abstract: The invention provides stabilized, biocompatible gold nanoparticles that are stabilized with material from epigallocatechin Gallate (EGCg), which is a polyphenols- or flavonoids-rich plant material that can be obtained from green tea. The EGCg is an antioxidant reducing agent derived from green tea. The gold nanoparticles of the invention can be radioactive or non radioactive and are formed via a simple room temperature fabrication method. In preferred embodiment method of making, an aqueous solution containing gold salts is provided. The aqueous solution is mixed with EGCg in a buffer, such as deionized water. The gold salts react to form biocompatible gold nanoparticles that are stabilized with a coating of EGCg. The thermodynamically feasible redox couple of AuCl4-/EGCg leading to the reduction of AuCl4- by EGCg to form gold nanoparticles. In another embodiment, pre-cooled gold salt and EGCg solutions form multi-layered EGCg coated particles.

Abstract: An embodiment of the invention is a peptide comprising four domains, wherein domain I consists of thioctyl or monocytl, domain II consists of 2 to 3 positively charged amino acids selected from the group consisting of lysine and arginine, domain III consists of a dimeric ethylene unit; and domain IV comprises the peptide with SEQ ID No. 1 or a sequence having at least 90% identity to SEQ ID No. I. The peptide is preferably attached to a gold nanostructure, preferably a gold nanorod to provide an EFGR kit. An EFGR detection kit of the invention employs a gold nanostructure attached to a peptide sequence, the peptide sequence includes a binding sequence with an affinity toward EGFR, a ligand bound to gold atoms of the nanorod, a positively charged amino acid that maintains activity of the binding sequence, and a unit that increases hydrophilicity of the peptide sequence.