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Related Experiment Video

Updated: Feb 16, 2026

A 'Plug and Play' Method to Create Water-dispersible Nanoassemblies Containing an Amphiphilic Polymer, Organic Dyes and Upconverting Nanoparticles

A 'Plug and Play' Method to Create Water-dispersible Nanoassemblies Containing an Amphiphilic Polymer, Organic Dyes and Upconverting Nanoparticles

Published on: November 14, 2015

Stable Inks Containing Upconverting Nanoparticles Based on an Oil-in-Water Nanoemulsion.

Jeevan M Meruga¹, William M Cross², Jacob B Petersen²

¹Center for Security Printing and Anti-Counterfeiting Technology , 501 E. St. Joseph Street, Rapid City, South Dakota 57701, United States.

Langmuir : the ACS Journal of Surfaces and Colloids

|January 9, 2018

Summary

This summary is machine-generated.

This study developed a stable oil-in-water nanoemulsion for dispersing upconverting nanoparticles (UCNPs). The nanoemulsion ink demonstrated inkjet printability and stability for up to 7 months.

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Area of Science:

Materials Science
Nanotechnology
Colloid Science

Background:

Upconverting nanoparticles (UCNPs) offer unique optical properties for various applications.
Dispersing UCNPs in stable formulations, such as nanoemulsions, is crucial for their practical use.
Long-term stability of nanoparticle dispersions is a significant challenge.

Purpose of the Study:

To investigate the long-term stability of an oil-in-water nanoemulsion containing upconverting nanoparticles (UCNPs).
To assess the suitability of the nanoemulsion for inkjet printing applications.
To evaluate the effect of storage temperature on UCNP dispersion stability.

Main Methods:

Oil-in-water nanoemulsion formulation with UCNPs.
Negative staining transmission electron microscopy (TEM) for UCNP localization.
Dynamic light scattering (DLS) for droplet size analysis.
Custom ink stability test over 11 days.
Long-term storage stability assessment at different temperatures (277 K and 333 K).

Main Results:

UCNPs were successfully dispersed in the oil phase of the nanoemulsion.
The nanoemulsion consisted primarily of oil droplets smaller than 1 μm.
The formulation maintained UCNP dispersion and inkjet printability for at least 7 months.
Short-term stability tests showed an initial loss of UCNPs, followed by sustained dispersion.
Higher storage temperature (333 K) promoted better UCNP dispersion stability compared to lower temperature (277 K).

Conclusions:

The developed oil-in-water nanoemulsion provides a stable and printable medium for UCNPs.
The system demonstrates potential for long-term applications requiring UCNP deposition, such as inkjet printing.
Storage conditions significantly impact the long-term stability of UCNP nanoemulsion dispersions.