Issue 5, 2024

Two-photon laser printing of 3D multicolor emissive polymer microstructures

Abstract

In this study, we aim for the fabrication of precise multi-color 3D microstructures utilizing organic emitters. We have carefully selected dyes with red, green, and blue (RGB) emission characteristics and incorporated them into printable formulations suitable for two-photon laser printing (2PLP). Specifically, we have chosen an OAPPDO derivative, a boron dipyrromethene difluoride (BODIPY), and a coumarin derivative as red, green, and blue emitters, respectively, each functionalized with acrylate groups. The photopolymerizable groups allow for covalent linking to the polymer network formed in the subsequent step, enabling precise control over the incorporation of the desired emitter. The formulations including these three photopolymerizable dyes have been employed to print emissive 3D microstructures via 2PLP. Furthermore, we have studied and optimized their printability, resolution, and emission properties for each case. In a last step, we have fabricated complex multi-material 3D microstructures, demonstrating the versatility and potential application of our method in displays or anti-counterfeiting systems.

Graphical abstract: Two-photon laser printing of 3D multicolor emissive polymer microstructures

Supplementary files

Article information

Article type
Paper
Submitted
23 Apr 2024
Accepted
16 Jun 2024
First published
17 Jun 2024
This article is Open Access
Creative Commons BY license

RSC Appl. Polym., 2024,2, 847-856

Two-photon laser printing of 3D multicolor emissive polymer microstructures

F. Kröger, R. Eichelmann, G. Sauter, A. Pollien, P. Tegeder, L. H. Gade and E. Blasco, RSC Appl. Polym., 2024, 2, 847 DOI: 10.1039/D4LP00141A

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