Digital Luminescence Patterning via Inkjet Printing of a Photoacid Catalysed Organic-Inorganic Hybrid Formulation.
Jorge AlamánMaría López-ValdeolivasRaquel AlicanteJose Ignacio PeñaCarlos Sánchez-SomolinosPublished in: Polymers (2019)
Accurate positioning of luminescent materials at the microscale is essential for the further development of diverse application fields including optoelectronics, energy, biotechnology and anti-counterfeiting. In this respect, inkjet printing has recently attracted great interest due to its ability to precisely deposit with high throughput and no contact, functional materials on different types of substrates. Here, we present a novel photoacid catalysed organic-inorganic hybrid luminescent ink. The formulation, containing monomers bearing epoxy and silane functionalities, a photoacid generator and a small percentage of Rhodamine-B, shows good jetting properties and adequate wetting of the deposited droplets on the receiving substrates. Ultraviolet exposure of the deposited material triggers the cationic ring-opening polymerization reaction of the epoxy groups. Concomitantly, if atmospheric water is available, hydrolysis and condensation takes place, overall leading to a luminescent crosslinked hybrid organic-inorganic polymeric material obtained through a simple one-step curing process, without post baking steps. Advantageously, protection of the ink from actinic light delays the hydrolysis and condensation conferring long-term stability to the ink. Digital patterning leads to patterned emissive surfaces and elements with good adhesion to different substrates, mechanical and optical properties for the fabrication of optical and photonic elements and devices.
Keyphrases
- water soluble
- quantum dots
- light emitting
- drug delivery
- high throughput
- energy transfer
- sensitive detection
- metal organic framework
- high resolution
- high speed
- biofilm formation
- particulate matter
- perovskite solar cells
- cancer therapy
- anaerobic digestion
- single cell
- cell fate
- air pollution
- mass spectrometry
- tissue engineering
- carbon dioxide
- electron transfer