Chemical-Resistant Green Luminescent Concentrator-Based Photo-Microreactor via One-Touch Assembly of 3D-Printed Modules

Abstract

The direct use of the most sustainable energy, the sun, for chemical reactions is extremely attractive. This study proposes a green luminescent concentrator-based photo-microreactor (GLC-PM) assembled by flow modules that can be diversely 3D-printed using a photocurable fluoropolymer formulated with a fluorescent dye (Coumarin 6) for enhancing photochemical reactions. The inherently solvent-resistant GLCflow modules maintain the chemical efficiency without leaching of fluorescent dyes and deposition of photocatalyst on the walls. In particular, the hexagonal GLC modules enable facile assembly into the customized PMs based on the synthesis requirements using built-in magnets for one-touch self-alignment. Moreover, the serially assembled GLC-PM was shown to enhance the photocatalytic reaction of C−C bond formation in the presence of Rose Bengal, and eventually, the GLC-PM formed by clustering serial and radial connections resulted in enhanced conversion and throughput of C−P bond formation in the presence of Eosin-Y. Therefore, the clustered GLC-PM can be considered as a viable and unique scaling strategy for the production of organic compounds, such as a photo-driven mini-plant.

Parameter investigation of an organic–inorganic hybrid resin for a 3D-printed microchannel heat exchanger

“…3 Nonetheless, the practical application under various conditions is often hindered by the limitations of commercial organic resins, which typically exhibit low thermal stability, mechanical strength, and chemical resistance. [13][14][15] Polymer-derived ceramics (PDCs) have been employed in the 3D printing approach to create 3D ceramic objects from preceramic polymers such as polycarbosilanes and subsequent conversion to the non-oxide SiC ceramic phase by high temperature pyrolysis over 1000 °C under an inert atmosphere. [16][17][18] Despite the robust properties of 3D-printed PDCs, the structures suffer from severe shrinkage during the pyrolysis process, which can deform or crack due to the large weight loss of gaseous by-products.…”

“…3 Nonetheless, the practical application under various conditions is often hindered by the limitations of commercial organic resins, which typically exhibit low thermal stability, mechanical strength, and chemical resistance. 13–15…”

Photo Microreactor with Luminescent Fluid Mediating Solar Photochemical Synthesis

“…Currently, various LSC-PM designs have been developed, e.g., to achieve good solvent compatibility in LSC-PMs, a transparent fluoropolymer capillary with high chemical stability was embedded in the lightguide as the reaction channel. , A more challenging issue for LSC-PMs is that a given reactor was exclusive for photoreactions with a specified activating wavelength range, which should conform with the wavelength range emitted by the luminophore doped in the lightguide. Two solutions have been brought forward to achieve the easy displacement of the dye molecules.…”

Open-source 3D printed reactors for reproducible batch and continuous-flow photon-induced chemistry: design and characterization

“…However, 3D printing technologies offer a promising solution to overcome most, if not all, of these challenges. [12][13][14][15][16][17][18][19][20][21] The advancement of additive manufacturing, particularly fused deposition modeling (FDM), presents a compelling option for laboratory settings where customized solutions are often required promptly. 22,23 These processes cater to the global scientific community by enabling the design, modification, enhancement, production, and repair of smallscale systems.…”