Issue 30, 2018

Dendrimer-induced colloids towards robust fluorescent photonic crystal films and high performance WLEDs

Abstract

Photonic crystals (PCs) have attracted great attention in recent years because of their vibrant structural colors. However, the poor mechanical stability of photonic crystals has severely limited their application. Here, we present an original strategy to construct a flexible and tough PC film composed of composite microspheres. These microspheres were prepared by coating CdSe@ZnS quantum dots on generation 3 polyamidoamine (G3 PAMAM) dendrimer-functionalized poly(styrene-methyl methacrylate-acrylic acid) (PS) microspheres via an in situ reaction. Benefiting from the strong coordination interactions among the dendrimer-functionalized microspheres, the mechanical robustness and the mechanical stability of the PC film were notably strengthened. In addition, taking advantage of the angle-independent characteristics of the PC beads, we applied them to improve the luminescence of a white LED. The PC beads were simply doped into the silicone and the light intensity of the WLED was enhanced with a full angle, significantly. This method may provide an efficient route for designing energy-saving WLEDs with high brightness.

Graphical abstract: Dendrimer-induced colloids towards robust fluorescent photonic crystal films and high performance WLEDs

  • This article is part of the themed collection: Photonics

Supplementary files

Article information

Article type
Paper
Submitted
22 maj 2018
Accepted
03 jul 2018
First published
11 jul 2018

J. Mater. Chem. C, 2018,6, 8187-8193

Dendrimer-induced colloids towards robust fluorescent photonic crystal films and high performance WLEDs

G. Peng, Z. Zhu, Y. Tian, Y. Tong, T. Cui, C. Wang and S. Chen, J. Mater. Chem. C, 2018, 6, 8187 DOI: 10.1039/C8TC02484G

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