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Open AccessArticle

In Situ Ultraviolet Polymerization Using Upconversion Nanoparticles: Nanocomposite Structures Patterned by Near Infrared Light

1
College of Information and Communication Engineering, Sungkyunkwan University, Suwon 16419, Korea
2
School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
3
The Institute for Lasers, Photonics and Biophotonics and the Department of Chemistry, University at Buffalo, The State University of New York, New York, NY 14260, USA
4
College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
5
School of Electronic and Electrical Engineering, Sungkyunkwan University, Suwon 16419, Korea
*
Authors to whom correspondence should be addressed.
Nanomaterials 2020, 10(10), 2054; https://doi.org/10.3390/nano10102054
Received: 21 August 2020 / Revised: 14 September 2020 / Accepted: 11 October 2020 / Published: 17 October 2020
(This article belongs to the Special Issue Advanced Nanocomposites for 3D Printing Applications)
In this paper, we report an approach to polymerization of a nanocomposite containing UV-polymerizable organic material and inorganic, NaYbF4:Tm3+ core-based nanoparticles (NPs), which are optimized for upconversion of near infrared (NIR) to ultraviolet (UV) and blue light. Our approach is compatible with numerous existing UV-polymerizable compositions and the NaYF4: Yb, Tm3+ core-based NPs are much more stable against harsh conditions than NIR organic photo-initiators proposed earlier. The use of a core-shell design for the NPs can provide a suitable method for binding with organic constituents of the nanocomposite, while maintaining efficient NIR-to-UV/blue conversion in the NaYbF4 core. The prepared photopolymerized transparent polymer nanocomposites display upconversion photoluminescence in UV, visible and NIR ranges. We also demonstrate a successful fabrication of polymerized nanocomposite structure with millimeter/submillimeter size uniformly patterned by 980 nm irradiation of inexpensive laser diode through a photomask. View Full-Text
Keywords: upconversion; core-shell nanoparticles; photopatterning; ultraviolet; polymerization; near-infrared upconversion; core-shell nanoparticles; photopatterning; ultraviolet; polymerization; near-infrared
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MDPI and ACS Style

Jee, H.; Chen, G.; Prasad, P.N.; Ohulchanskyy, T.Y.; Lee, J. In Situ Ultraviolet Polymerization Using Upconversion Nanoparticles: Nanocomposite Structures Patterned by Near Infrared Light. Nanomaterials 2020, 10, 2054.

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