Photoacid catalyzed organic–inorganic hybrid inks for the manufacturing of inkjet-printed photonic devices

Alamán, Jorge; López-Valdeolivas, María; Alicante, Raquel; Medel, Francisco; Silva-Treviño, J.; Peña, José; Sánchez‐Somolinos, Carlos

doi:10.1039/c7tc05178f

Cited by 12 publications

(19 citation statements)

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“…The hardness and Young modulus, determined by nanoindentation in 4 µm thick films, were 0.26 and 4.3 GPa, respectively. These values are similar to those measured for homologous deposits without the luminescent dye [48]. Excellent adhesion to the substrate was also found for the cured luminescent ink as can already be anticipated from the SEM images of the fractured cured isolated drops (Figure 3).…”

Section: Resultssupporting

confidence: 87%

“…The luminescent ink presented in this paper, named HRI-RhodB-02, takes as basis the work previously developed in our group on photoacid catalysed organic-inorganic hybrid inks for the preparation of photonic waveguides [48]. The hybrid organic-inorganic compound GPTMS is taken as main component (50 wt %), mixed with two monomers in the following proportions: 25 wt % of Epitkote 157 and 25 wt % of dPDMS.…”

Section: Resultsmentioning

confidence: 99%

“…Macroscopically, the UV irradiation of a liquid film of photocurable formulation immediately leads to a solid layer indicating that polymerization has efficiently taken place. As mentioned, decomposition of the photoinitiator leads to acid generation that can trigger the epoxy ring-opening cationic photopolymerization as well as the photoacid-catalysed sol-gel process as described elsewhere (see Schemes S2 and S3 in the Supporting information) [48]. To study more in detail this polymerization process, FTIR spectroscopic characterization was carried out.…”

Section: Resultsmentioning

confidence: 99%

“…Figure 3a,b shows SEM microscopy images of droplets deposited under optimum jetting conditions and cured in ambient atmosphere (at 26 °C and relative humidity between 30%–40%). The SEM morphology of deposited ink droplets presents inhomogeneous structures in the surface after curing, indicating phase segregation [48]. This effect appears during the curing process in these hybrids multicomponent inks and can be due to the different kinetics of the organic and inorganic parts during their polymerization.…”

Section: Resultsmentioning

confidence: 99%

“…Recently we have demonstrated that photoacid catalysed formulations containing monomers with epoxy and silane functionalities are suitable systems for the preparation of inks with long-term stability leading, after printing and curing, to deposits with excellent optical and mechanical properties [48]. When compared to other sol-gel methods, this approach is a solvent-free process starting with the low molecular weight monomers that advantageously enable the preparation of formulations with appropriate viscosity for inkjet.…”

Section: Introductionmentioning

confidence: 99%

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Digital Luminescence Patterning via Inkjet Printing of a Photoacid Catalysed Organic-Inorganic Hybrid Formulation

et al. 2019

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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.

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Section: Resultssupporting

confidence: 87%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Digital Luminescence Patterning via Inkjet Printing of a Photoacid Catalysed Organic-Inorganic Hybrid Formulation

et al. 2019

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Light to Shape the Future: From Photolithography to 4D Printing

Barrio

Sánchez‐Somolinos

2019

Advanced Optical Materials

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185

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producing increasingly complex patterned films and miniaturized devices, which are required in modern information and communication technologies. [1] In addition to semiconductor device fabrication, a host of applications for patterned thin films and structured polymeric systems have been identified over the last two decades in areas including optics, energy harvesting, biotechnology, and medicine. [2] Our ability to structure polymeric materials has grown tremendously and the palette of materials and techniques to achieve a quick and reliable production of patterns with increasing resolution is quite extensive. This boom has been largely sustained by the development of specific photonic technologies, such as advanced light sources or spatial light modulators, photosensitive materials, and, more importantly, our growing knowledge of the interaction between light and matter. Indeed, the ability to control a chemical reaction with light in a remote fashion is a powerful concept. Light irradiation can initiate a photochemical process that otherwise would not occur at ambient conditions. This property lies at the origin of the temporal control afforded by simply turning the light source on and off. Moreover, patterned illumination or the use of focused light beams enables control of not only when, but also where a photoinduced transformation occurs. The photochemical processes occurring in many polymers and resists can be effectively manipulated by fine-tuning the intensity and frequency of light. However, these are just two of the primary properties of light, and there are specific photoresponsive systems that enable the generation of ordered structures by adjusting the polarization of light, in addition to intensity and frequency.In this review, an overview of photochemical reactions, photosensitive polymers, and light-based structuring techniques is provided. As this field is too broad to be covered in depth in one single article, some recent examples and applications, as well as emerging opportunities and trends, are highlighted throughout the discussion. Section 2 is focused on light-induced reactions and photosensitive materials. The fundamentals of photochemical reactions and their implementation in polymer science have been overviewed in many excellent books and reviews. [3] In Section 2, rather than being comprehensive, emphasis is given to those photochemical processes lying at the basis of those structuring techniques that are later discussed in Section 3. Some of these techniques, including conventional mask lithographies, interference lithographies, direct laser writing (DLW) with one-or two-photon processes, or stereolithographic techniques, make use of light as a structuring tool.There is an additional group of techniques where light is employed to set a structure created beforehand through a Over the last few decades, the demand of polymeric structures with welldefined features of different size, dimension, and functionality has increased from various application areas, including microelectronics, ...

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A Dielectric Ink Combining Acrylate and Cyanate Moieties for Inkjet 3D Printing with Good Thermal Stability

Li,

Wu,

Yang

et al. 2024

Chin J Polym Sci

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Photoacid catalyzed organic–inorganic hybrid inks for the manufacturing of inkjet-printed photonic devices

Abstract: Inkjet printing of photoacid catalyzed organic–inorganic hybrid formulations has been used in the preparation of low-loss optical waveguides.

Cited by 12 publications

References 74 publications

Digital Luminescence Patterning via Inkjet Printing of a Photoacid Catalysed Organic-Inorganic Hybrid Formulation

Digital Luminescence Patterning via Inkjet Printing of a Photoacid Catalysed Organic-Inorganic Hybrid Formulation

Light to Shape the Future: From Photolithography to 4D Printing

A Dielectric Ink Combining Acrylate and Cyanate Moieties for Inkjet 3D Printing with Good Thermal Stability

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