Issue 43, 2018

Highly stable perovskite nanogels as inks for multicolor luminescent authentication applications

Abstract

Preparation of multiplexing optical tags with well-resolved emissions is particularly intriguing in anti-counterfeiting and authentication applications given that broad and overlapping emission would severely impair the encoding capacities and performance. Bright and sharp multicolor emission of metal halide perovskite quantum dots (PQDs) makes them good alternatives, but the weak stability potentially hampers their practical implications. We here developed a novel strategy for synthesizing a full-spectral emissive perovskite gel with greatly improved photo-stability, thermal-stability and humidity-stability by embedding PQDs in a pre-polymerized polymer gel at room temperature and further employed it as multicolor ink for printing anti-counterfeiting two-dimensional barcodes.

Graphical abstract: Highly stable perovskite nanogels as inks for multicolor luminescent authentication applications

Supplementary files

Article information

Article type
Paper
Submitted
03 sen 2018
Accepted
02 okt 2018
First published
03 okt 2018

J. Mater. Chem. C, 2018,6, 11569-11574

Highly stable perovskite nanogels as inks for multicolor luminescent authentication applications

H. Wang, X. Yin and L. Wang, J. Mater. Chem. C, 2018, 6, 11569 DOI: 10.1039/C8TC04420A

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