Title: Greener process to synthesize water-soluble Mn.sup.2+-doped CdSSe(ZnS) core(shell) nanocrystals for ratiometric temperature sensing, nanocrystals, and methods implementing nanocrystals

Abstract

Novel Mn.sup.2+-doped quantum dots are provided. These Mn.sup.2+-doped quantum dots exhibit excellent temperature sensitivity in both organic solvents and water-based solutions. Methods of preparing the Mn.sup.2+-doped quantum dots are provided. The Mn.sup.2+-doped quantum dots may be prepared via a stepwise procedure using air-stable and inexpensive chemicals. The use of air-stable chemicals can significantly reduce the cost of synthesis, chemical storage, and the risk associated with handling flammable chemicals. Methods of temperature sensing using Mn.sup.2+-doped quantum dots are provided. The stepwise procedure provides the ability to tune the temperature-sensing properties to satisfy specific needs for temperature sensing applications. Water solubility may be achieved by passivating the Mn.sup.2+-doped quantum dots, allowing the Mn.sup.2+-doped quantum dots to probe the fluctuations of local temperature in biological environments.

Inventors:

Yang, Haw; Hsia, Chih-Hao

Issue Date:

Tue Jul 04 00:00:00 EDT 2017

Research Org.:

Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1368199

Patent Number(s):

9696317

Application Number:

14/352,610

Assignee:

The Trustees of Princeton University

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS

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B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES

B82Y30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS

C01B19/002 - {Compounds containing, besides selenium or tellurium, more than one other element, with -O- and -OH not being considered as anions}

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01P - INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS

C01P2002/89 - by mass-spectroscopy
C01P2004/04 - obtained by TEM, STEM, STM or AFM
C01P2004/64 - Nanometer sized, i.e. from 1-100 nanometer

C - CHEMISTRY C09 - DYES C09K - MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE

C09K11/02 - Use of particular materials as binders, particle coatings or suspension media therefor
C09K11/562 - {Chalcogenides}
C09K11/565 - {with zinc cadmium}
C09K11/883 - {with zinc or cadmium}

G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES

G01N21/6408 - {with measurement of decay time, time resolved fluorescence}
G01N33/588 - {with semiconductor nanocrystal label, e.g. quantum dots}

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES

H01L33/06 - within the light emitting region, e.g. quantum confinement structure or tunnel barrier

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

Y10T428/2991 - Coated

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DOE Contract Number:  

AC02-05CH11231

Resource Type:

Patent

Resource Relation:

Patent File Date: 2012 Oct 18

Country of Publication:

United States

Language:

English

Subject:

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY