COMPOSITION-CONTROLLED NOBLE METAL-TRANSITION METAL SMALL NANOPARTICLE ALLOYS WITH NIR-EMISSION AND HIGH T2 RELAXIVITY AND METHOD FOR MAKING SAME
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United States of America Patent
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Feb 25, 2016
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Jul 21, 2015
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Jul 21, 2014
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Abstract
A method for producing small nanoparticles of a discrete noble metal-transition metal nanoparticle alloy, comprising: mixing, at room temperature in air, a first aqueous solution having a first molar ratio of a noble metal and a transition metal with an organic ligand and a reducing agent. A method for producing small nanoparticles of a discrete gold-cobalt nanoparticle alloy, comprising: mixing, at room temperature in air, a first aqueous solution having a first molar ratio of HAuCl4 and Co(NO3)2 with an organic ligand comprising poly(ethylene glycol) methyl ether thiol (PEGSH, average Mn=1000 Da) and a reducing agent comprising sodium borohydride (NaBH4).
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