Title: Semiconductor nanocrystals covalently bound to solid inorganic surfaces using self-assembled monolayers

Abstract

Methods are described for attaching semiconductor nanocrystals to solid inorganic surfaces, using self-assembled bifunctional organic monolayers as bridge compounds. Two different techniques are presented. One relies on the formation of self-assembled monolayers on these surfaces. When exposed to solutions of nanocrystals, these bridge compounds bind the crystals and anchor them to the surface. The second technique attaches nanocrystals already coated with bridge compounds to the surfaces. Analyses indicate the presence of quantum confined clusters on the surfaces at the nanolayer level. These materials allow electron spectroscopies to be completed on condensed phase clusters, and represent a first step towards synthesis of an organized assembly of clusters. These new products are also disclosed.

Inventors:

Alivisatos, A Paul ^[1]; Colvin, Vicki L ^[1]

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1. Berkeley, CA

Issue Date:

1998-05-12

Research Org.:

Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

OSTI Identifier:

871542

Patent Number(s):

5751018

Assignee:

Regents of University of CAlifornia (Oakland, CA)

Patent Classifications (CPCs):

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

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

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

H01L21/02439 - {Materials}
H01L21/02601 - {Nanoparticles
H01L21/02546 - {Arsenides}
H01L21/02543 - {Phosphides}

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

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

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

H01L21/02557 - {Sulfides}
H01L21/02551 - {Group 12/16 materials}
H01L21/02422 - {Non-crystalline insulating materials, e.g. glass, polymers}
H01L21/02425 - {Conductive materials, e.g. metallic silicides}
H01L21/02538 - {Group 13/15 materials}
H01L21/0256 - {Selenides}
H01L21/02499 - {Monolayers}

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DOE Contract Number:  

AC03-76SF00098

Resource Type:

Patent

Country of Publication:

United States

Language:

English

Subject:

semiconductor; nanocrystals; covalently; bound; solid; inorganic; surfaces; self-assembled; monolayers; methods; described; attaching; bifunctional; organic; bridge; compounds; techniques; relies; formation; exposed; solutions; bind; crystals; anchor; surface; technique; attaches; coated; analyses; indicate; presence; quantum; confined; clusters; nanolayer; level; materials; allow; electron; spectroscopies; completed; condensed; phase; represent; step; towards; synthesis; organized; assembly; products; disclosed; covalently bound; semiconductor nanocrystals; semiconductor nanocrystal; self-assembled monolayers; solid inorganic; condensed phase; self-assembled monolayer; inorganic surfaces; /257/