Claire Hartmann-Thompson*, Elizabeth Lilygren, Adunya Mekonnen, Evan Schwartz, Sihan Xie, Simon Killeen, Cedric Bedoya, Pamela Percha and Patrick Crain,
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引用次数: 0
Abstract
Efforts to develop next generation UV-curable optical materials for the encapsulation of an OLED, micro-LED, or quantum dot in electronic displays aim for a combination of ever-increasing oxygen plasma etch resistance, inkjet delivery, tailored refractive indices, and mechanical properties ranging from low (flexible) to high modulus. To this end, a range of low viscosity liquid hybrid silicon-organic methacrylates was synthesized and characterized, including mono- and difunctional carbosilanes, tri- and tetrafunctional carbosiloxane stars, and multifunctional hyperbranched polycarbosilane polymers. Ink formulations carrying silicon-containing methacrylates exhibited greater oxygen plasma etch resistance in comparison to silicon-free controls. Furthermore, it was demonstrated that etch resistance was proportional to weight percent elemental silicon content regardless of methacrylate functionality, molecular architecture, and molecular mass, and that this effect overrode the established empirical indicators of etch resistance for organics such as Ohnishi parameter and ring parameter. In addition, ink refractive indices could be tailored by controlling the phenyl level in the core composition of the star and hyperbranched methacrylates, and average methacrylate functionality, cross-link density, and glass-transition temperature could be controlled to enable either higher modulus layers or lower modulus flexible layers.
期刊介绍:
ACS Applied Polymer Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics, and biology relevant to applications of polymers.
The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrates fundamental knowledge in the areas of materials, engineering, physics, bioscience, polymer science and chemistry into important polymer applications. The journal is specifically interested in work that addresses relationships among structure, processing, morphology, chemistry, properties, and function as well as work that provide insights into mechanisms critical to the performance of the polymer for applications.