Homogeneous mixtures for nanoparticle synthesis

Patent metadata

Field	Value
Publication number	US-9630845-B2
Application number	US-201414549878-A
Country	US
Kind code	B2
Filing date	Nov 21, 2014
Priority date	Nov 21, 2013
Publication date	Apr 25, 2017
Grant date	Apr 25, 2017

Abstract

Presented herein is a method for obtaining a dissolved selenium liquid mixture from solid selenium. The method involves mixing an amine solvent and a thiol solvent with the solid selenium to produce a liquid intermediate solution and removing a sulfur containing compound from the liquid intermediate solution to produce a dissolved selenium liquid mixture. A method for obtaining dissolved sulfur liquid mixture by mixing an amine with a thiol to produce a liquid solution that dissolves sulfur to produce a dissolved sulfur liquid mixture is also presented. In addition, a method for obtaining a dissolved sulfur and selenium liquid mixture from solid selenium and solid sulfur by mixing an amine solvent with a thiol solvent is presented.

First claim

We claim:

1. A method for obtaining a dissolved selenium liquid mixture from solid selenium, comprising:
mixing an amine solvent and a thiol solvent with the solid selenium to produce a liquid intermediate solution; and
removing a sulfur containing compound from the liquid intermediate solution to produce a dissolved selenium liquid mixture.

2. The method of claim 1 , wherein the amine is a primary, a secondary, a tertiary amine, or a mixture thereof.

3. The method of claim 1 , wherein the amine is a diamine, a triamine, a compound with multiple amino groups, or a mixture thereof.

4. The method of claim 1 , wherein the amine is represented by

and the thiol is represented by R 4 -SH, wherein R 1 , R 2 , R 3 , and R 4 are independently selected from the group consisting of alkane, alkene, alkyne, functional groups, and hydrogen.

5. The method of claim 1 , wherein the sulfur containing compound is a thiol or a disulfide.

6. The method of claim 5 , wherein at least 99% of the sulfur containing compound is removed.

7. The method of claim 5 , wherein the sulfur containing compound is the thiol solvent.

Assignees

• Purdue Research Foundation

Inventors

• Agrawal Rakesh
• Walker Bryce Chryst

Classifications

• C01B19/002

  Compounds containing, besides selenium or tellurium, more than one other element, with -O- and -OH not being considered as anions · CPC title

• C01P2002/85

  by XPS, EDX or EDAX data · CPC title

• C01B19/007

  Tellurides or selenides of metals (C01B19/002 takes precedence) · CPC title

• C01P2004/64

  Nanometer sized, i.e. from 1-100 nanometer · CPC title

• C01P2004/04

  obtained by TEM, STEM, STM or AFM · CPC title