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Methods for the preparation of colloidal nanocrystal dispersion

Patent ·
OSTI ID:1485283
Methods of preparing a dispersion of colloidal nanocrystals (NCs) for use as NC thin films are disclosed. A dispersion of NCs capped with ligands may be mixed with a solution containing chalcogenocyanate (xCN)-based ligands. The mixture may be separated into a supernatant and a flocculate. The flocculate may be dispersed with a solvent to form a subsequent dispersion of NCs capped with xCN-based ligands.
Research Organization:
The Trustees of the University of Pennsylvania, Philadelphia, PA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
SC0002158
Assignee:
The Trustees of the University of Pennsylvania (Philadelphia, PA)
Patent Number(s):
10,096,733
Application Number:
15/150,816
OSTI ID:
1485283
Country of Publication:
United States
Language:
English

References (15)

New heterometallic coordination polymers derived form chalcogenocyanates: synthesis, characterization and electrical properties journal October 2004
Thiocyanate-Capped Nanocrystal Colloids: Vibrational Reporter of Surface Chemistry and Solution-Based Route to Enhanced Coupling in Nanocrystal Solids journal October 2011
Evolution of Colloidal Nanocrystals: Theory and Modeling of their Nucleation and Growth journal August 2009
Thiocyanate-Capped PbS Nanocubes: Ambipolar Transport Enables Quantum Dot Based Circuits on a Flexible Substrate journal November 2011
Bandlike Transport in Strongly Coupled and Doped Quantum Dot Solids: A Route to High-Performance Thin-Film Electronics journal April 2012
Chemically Tailored Dielectric-to-Metal Transition for the Design of Metamaterials from Nanoimprinted Colloidal Nanocrystals journal December 2012
Stoichiometric Control of Lead Chalcogenide Nanocrystal Solids to Enhance Their Electronic and Optoelectronic Device Performance journal February 2013
Air-Stable, Nanostructured Electronic and Plasmonic Materials from Solution-Processable, Silver Nanocrystal Building Blocks journal February 2014
Colloidal nanocrystal synthesis and the organic–inorganic interface journal September 2005
Flexible and low-voltage integrated circuits constructed from high-performance nanocrystal transistors journal January 2012
Virtues of defects journal December 2017
Colloidal semiconductor nanocrystals: controlled synthesis and surface chemistry in organic media journal January 2014
Biological applications of colloidal nanocrystals journal June 2003
Colloidal Nanocrystals with Molecular Metal Chalcogenide Surface Ligands journal June 2009
Nanocrystal technology, drug delivery and clinical applications journal October 2008

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